Materials Engineer Test Reviewer

1. Scales for weighing aggregates and cement shall be accurate within ____ % throughout the range of use. Scales shall be inspected and sealed as often as the Engineer may deem necessary to assure their continued accuracy. a) 1.0 % c) 0.5 % b) 1.5 % d) 2.0 %

2. When cement is placed in contact with the aggregate, batches may be rejected unless mixed within _____ hours of such contact. a) 1.5 hours c) 0.5 hours b) 2.0 hours d) 2.5 hours

3. When mixed at the site or in a central mixing plant, the mixing time shall not be less than ______ nor more than ____ unless mixer performance test prove adequate mixing of concrete in a shorter time period. a) 30 seconds nor more than 90 seconds b) 50 seconds nor more than 90 seconds c) 60 seconds nor more than 120 seconds d) 90 seconds nor more than 120 seconds

4. The flow of water shall be uniform and all water should be in the drum by the end of the first ____ seconds of the mixing period. a) 45 seconds c) 15 seconds b) 30 seconds d) 20 seconds

5. Concrete not place within ____ minutes from the time the ingredients were charged into the mixing drum shall be used. a) 120 minutes c) 60 minutes b) 150 minutes d) 90 minutes

6. When concrete is delivered in truck mixers, additional water may be added to the batch and additional mixing performed to increase the slump to meet the specified requirement if permitted by the Engineer, provided all these operation are performed within ____ after the initial mixing operation and the water and cement ratio is not exceeded.

a) 30 minutes c) 45 minutes b) 15 minutes d) 60 minutes

7. A sample from a bituminous mix weighs 1000 grams. At extraction, it was found out that the dry aggregate weighed 950 grams. What is the % of asphalt by weight of mix? a) 5.2 % c) 5.4 % b) 5.0 % d) 4.8%

8. The minimum penetration of the preservative with the surface of the timber piles shall be ____ a) 150 mm c) 250 mm b) 200 mm d) 100 mm

9. The contractor shall submit in writing a job-mix formula for the mixture supported by laboratory test data along with samples of resources of components and viscosity temperature relationships to the Engineer for testing and approval at least ____. a) two weeks c) one week b) three weeks d) four weeks

10. The concrete samples should be stored in a moist conditioned temperature within the range of ____ until the time of test. a) 18* C to 24* C c) 14* C to 24* C b) 15* C to 18* C d) 18* C to 28* C

11. This is used in soil stabilized road surface due to its high ____ property, that is, it absorbs and retains water. a) Potassium Chloride c) Magnesium Chloride b) Calcium Chloride d) Sodium Chloride

12. The mass % wear of soil aggregate used in cement/lime proportions should not be more than ____. a) 40 % c) 45 % b) 50 % d) 55 %

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13. The uniform rate at which the movable head of the CBR machine travel is _____. a) 0.05 in / min c) 0.08 in /min b) 0.10 in /min d) 0.09 in /min

14. Cast in place concrete shall not be post tensioned until at least ____ and until the compressive strength has reached the strength specified. a) 7 days c) 14 days b) 10 days d) 20 days

15. The penetration test is an indication of the ____ of asphalt. a) Consistency c) Hardness b) Softness d) Flash Point

16. Specification requires one (1) Quality test for every ____ of asphalt a) 20 tons c) 50 tons b) 200 tons d) 40 tons

17. The ____ is the most commonly used method in the design and evaluation of bituminous concrete mixes. a) Job mix formula c) Marshall Stability b) Design mix d) Extraction

18. Vibration shall operate a frequency of 8,300 to 9,600 impulses per minute under load at a maximum spacing of ____ cm. a) 30 cm c) 60 cm b) 50 cm d) 40 cm

19. The specific gravity of Sodium Sulfate used in soundness test for aggregate should be with in the range of ____. a) 1.151 to 1.174 c) 1.051 to 1.154 b) 1.250 to 1.178 d) 1.058 to 1.184

20. The specific gravity magnesium sulfate solution used in soundness test for aggregate should be within the range of ____ .

a) 1.280 to 1.408 c) 1.295 to 1.308 b) 1.180 to 1.308 d) 1.195 to 1.318

21. Aggregate accounts for 92 95 % of the weight of the bituminous mixture asphalt accounts for 5 8 % of the weight of the mix. The exact percentage to be used is determined by the _____ a) Trial mix c) Job mix b) Design mix d) Job order

22. _____ is an indication that the asphalt mix is overheated. a) Blue smoke c) Rising steam b) Stiff appearance d) Mix slumps in truck

23. In checking the temperature of the mix, the thermometer should be inserted into the mix at least ____. a) 2 inches c) 4 inches b) 6 inches d) 6.0 mm

24. _____ is applied on existing bit, or cement concrete surface with bituminous materials. a) Bituminous Prime Coat c) Bituminous Seal Coat b) Bituminous Tack Coat d) Bituminous Surface Treatment

25. The solution used in the soundness test of aggregate shall be cooled to a temperature of 21 +or 1* C and maintain at that temperature for at least _____. a) 24 hours c) 48 hours b) 36 hours d) 18 hours

26. Proper compaction of the fill materials is very important, as it will ______. a) Increase the shear strength b) Decrease permeability c) Minimize compressibility d) All of the above

27. In which DPWH item is emulsified asphalt not suitable? a) Item 301 c) Item 304 b) Item302 d) Item 308

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28. Unconfined compressive strength test is usually performed on ______.

a) Sandy soils c) Organic soils b) Silty soils d) Clayey soils

29. Consolidation test is usually performed on ____ samples a) Disturbed c) Consolidated b) Undisturbed d) both a & b

30. A concrete core sample having a maximum height of less than _____ of its diameter before capping or height less than its diameter after capping shall not be tested. a) 93 % c) 95 % b) 94 % d) 96 %

31. The cohesion and internal friction of soil is tested by a) Tri axial shear test c) Bearing test b) Direct shear test d) All of the above

32. In concrete acceptance, core will be considered adequate if the average strength of the cores is equal to what? a) 80% of specified strength & if no single core is less than 75% of specified strength b) 90% of specified strength & if no single core is less than 80% of specified strength c) 85% of specified strength & if no single core is less than 75% of specified strength

33. Before the cement is to be used, sampling must be done at least _____ before use. a) one week c) two weeks b) 14 days d) 12 days

34. Asphalt cement shall not be used while it is foaming nor shall be heated at ____ at anytime after delivery. a) 107* c) 120* b) 159*

35. Moisture content of aggregate in bit mix shall not exceed ____ of the time it is introduce into the mixing unit. a) 1.5 mass % c) 1 mass % b) 2.0 mass %

36. Batching tolerance for Sand and Aggregate is ____. a) 1 % c) 3 % b) 2 %

37. Between stage of curing, concrete shall not be exposed for more than how many hours?

a) 24 hours c) hour b) 3 hours d) 72 hours

38. As a Materials Engineer, what will you do with major honeycombed area that is considered as defective work? a) Plaster b) Payment of the concrete will be made an adjustment c) Removed and replaced at the expensed of the contractor

39. If the strength of control specimen does not meet the requirement and not feasible to obtain cores due to structural consideration, as a Materials Engineer what will be your decision? a) Removed and replaced b) Area will not be paid c) Payment will be made at an adjusted price

40. After concrete has been placed, it is advisable to maintain fully welted and in position for how many hours? a) 14 hours c) 72 hours b) 24 hours d) 15 18 hours

41. Rock shall be excavated to a depth ____ below sub grade within the limit of the roadbed a) 100 mm c) 200 mm b) 150 mm

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42. Minimum penetration of all piles shall be ____. a) 3 meter c) 7 meter b) 6 meter d) 4.5 meter

43. Piles shall not be driven within 7 meters of concrete less than _____ old. a) 7 days c) 28 days b) 14 day

44. Paint contains _____ of pigment and _____ vehicle. a) 20 % & 80 % c) 79 % & 21 % b) 21 % & 79 % d) 80 % & 20 %

45. Minimum thickness of bedding materials beneath the pipe is _____. a) 100 mm c) 200 mm b) 150 mm

46. Tolerance of gabion dimension is _________________. a) +/- 1% c) +/- 3 % b) +/- 2 % d) +/- 4 %

47. Minimum size of galvanized wire mesh is ____________. a) 2.0 mm c) 2.7 mm b) 2.2 mm d) 3.4 mm

48. Minimum density of gabions is ___________. a) 1,000 kg/cu. m c) 1,400 kg/cu. m b) 1,200 kg/cu. m d) 1,500 kg/cu. m

49. Soundness loss of field gabions is __________________. a) 9 % after 5 cycles c) 11 % after 5 cycles b) 10 % after 5 cycles d) 12 % after 5 cycles

50. The heating temperature of reflector zed thermoplastic material during application is _____ a) 130 +/- 7* C c) 200 +/- 7* C b) 150 +/- 7* C d) 211 +/- 7* C

51. Submission of sample minimum quantity of material for asphalt cement is -------. a) 5 kg c) 20 kg b) 10 kg d) 100 kg

52. For how many years does the small Contractor given to procure necessary testing equipment? a) 2 years c) 5 years b) 4 years d) 6 years

53. The depth of the weakened joints must not be less than ____ and a width of ___. a) 40 mm & 6 mm c) 40 mm & 5 mm b) 50 mm & 5 mm d) 50 mm & 6 mm

54. Used of bituminous cold mix for potholes patching during rainy/ wet period is acceptable a) false b) true

55. In soil, all boring shall be carried to a depth of at least ____ below the proposed grade line. a) 0.50 m c) 1.5 m b) 1.0 m d) 1.8 m

56. The test that determines pile-bearing capacity by loading one or more pile and measuring settlement under load is _____. a) Vane shear test c) Pile load test b) Plate bearing test

57. The weight of disturbed samples from hard auger or split spoon shall be at least ____.

a) 1 kg c) 10 kg b) 20 kg d) 100 kg

58. Submission of sample for testing for cement is _____. a) 10 kg c) 15 kg b) 20 kg d) 40 kg

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59. The length of Shelby Tube of an undisturbed sample is _____. a) 10 long c) 20 long b) 18 long

60. For small project where quantity of steel bars is 10,000 kg or less, what is the basis for acceptance of material? a) No testing c) Mill certificate b) P.E, certificate

61. ______ determine the best combination of the material that will produce a potentially stable & durable mixture. a) Job mix formula c) Design of bituminous mix b) Marshall formula

62. _______ is the rate of loading for concrete cylinder sample subject to compression test

a) 20 - 40 psi/sec c) 15 40 psi/sec b) 20 - 50 psi/sec d) 15 40 psi/sec

63. I n a soil exploration, if the characteristic of rock is questionable, the minimum depth of boring into the bedrock should be _______. a) 1.5 m c) 2.5 m b) 2.0 m d) 3.0 m

64. Determine soil bearing capacity by loading a steel plate usually 30 diameter. a) Vane shear test c) Pile load test b) Plate bearing test d) None of the above

65. How many hours do aggregate stockpile or binned for draining before being batch? a) 1 hour c) 12 hours b) 6 hours d) 24 hours

66. What is the relative strength of mortar at 7 & 28 days of fine aggregates, when tested for the effect of organic impurities, which is higher than the standard?

a) not less than 90 % c) not less than 95 % b) not less than 80 % d) not less than 98 %

67. What is the rate of loading for concrete beam tested for flexural stress? a) 110 150 psi/sec c) 125 175 psi/sec b) 115 150 psi/sec d) 130 - 175 psi/sec

68. In concrete sampling paste shall be of normal consistency of _____ when the rod settles to a point below the original surface in 30 secs. a) 10 +/- 1 mm c) 15 +/- 1mm b) 11 +/- 1 mm d) 20 +/- 1 mm

69. What the temperature of a concrete sample? a) 10 15 * C c) 15 18* C b) 18 24 * C

70. What is the wash loss of fine aggregates in the no. 200 sieve? a) 1 % c) 3 % b) 2 % d) 4 %

71. Retarder can delay the setting time of concrete up to how many hours? a) 1 hour c) 4 hours b) 2 hours d) 8 hours

72. Super plasticizer can increase the strength of concrete up to how many percent? a) 40 60 % c) 50 70 % b) 50 60 % d) 60 70 %

73. ___________ is the moisture in an air dried soil a) Moisture Content b) Natural Moisture Content c) Hygroscopic Moisture Content d) Hydrometer Moisture Content

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74. _________ is the tolerance of mix in bituminous. a) 10* C c) 15* C b) 12* C d) 18* C

75. _________ Number of measurement taken in a core sample for thickness determination of the finish asphalt pavement a) 3 c) 5 b) 4 d) 8

76. In the absence of beam mold in site, cylinder mold is allowed by specification. What is the required strength? a) 2,500 psi c) b) 3,000 psi d) 4,000 psi

77. Prime coat shall be left undisturbed for at least _____. a) 6 hours c) 24 hours b) 12 hours

78. The first phase of rolling the spread bituminous mix is called breakdown rolling, which is carried out by pneumatic roller, temperature requirement must be _____. a) 200 225* F c) 160 180* F b) 190 199* F d)150 185* F

79. How many gradation ranges for hot plant mix bituminous pavement are there in the blue book? a) 5 c) 7 b) 6 d) 8

80. What is the plasticity index of mineral filler? a) not greater than 4 c) not greater than 8 b) not greater than 6 d) zero

81. If no core had been taken at the end of each day of operation and the project has already been completed, a core shall be taken ________. a) for every 75 l.m,/lane c) for every 100 l.m/lane b) for every 150 l.m/lane d) for every 1,000 l.m/lane

82. ________ is the slump of workable concrete if vibrated. a) 10 20 mm c) 40 50 mm b) 10 40 mm d) 40 75 mm

83. ________ Burnt product, which is used by Gypsum and pulverized to form Portland Cement. a) Hydraulic cement c) Fly Ash b) Clinker d) Volcanic Ash

84. When group index = 0, what is the grade of soil? a) weak soil c) good soil b) poor soil

85. ______ is a process of breaking down of rocks into small pieces of various sizes that can range from large boulders to very small clay particles.

a) Consolidation c) Weathering b) Unconsolidation

86. ________ is the limit were further loss of water due to evaporation, which will not result in reduction of volume. a) Plastic limit c) Shrinkage limit b) Liquid limit

87. ________ a classification of soil which 35% or less the particles pass through no. 200 sieve.

a) Grain size soil c) Silty clay materials b) Granular materials d) Clayey materials

88. ________ a classification of soil which 35% or more of the particles pass through no. 200 sieve

a) Course Sand Soil c) Silty-Clay Materials b) Granular Materials d) Clayey Materials

89. It evaluates the quality of soil as highway subgrade material. a) Atterberg Limit c) Group Index b) Plasticity Index d) Liquid Limit

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90. When soil has plasticity index value of 10, what is the criterion of the material? a) Coarse grain c) Clayey b) Sandy d) Silty

91. When plasticity index is equal a) Coarse grain c) Clayey b) Sandy d) Silty

92. _______ is an empirical number used in evaluation for G.I. a) 0 15 c) 0 20 b) 5 20 d) 0 25

93. It indicates good subbase materials when G.I. is equal to _____. a) 0 c) 10 b) 5 d) 20

94. It indicates very poor subbase materials when G.I. is equal to _____. a) 0 c) 10 b) 5 d) 20

95. ______ indicates the composition of soil. a) Atterberg Limit b) Plasticity Index

96. The higher the value of PI of the soil, the weaker will be the soil performance as a _____. a) True c) Depend b) False d) None of the above

97. _______ the Plasticity Index of group of soil a) 0 c) 10 b) 6 d) 11

98. _______ is the minimum percent of A-6 group classification of soil. a) 0 % c) 35 % b) 25 % d) 36 %

99. _______ is the maximum of G.I. of Silty Clay Materials a) 0 c) 20 b) 25 d) 35

100. When the value of G.I. is negative, what will be the soil performance? a) Poor Subgrade c) Good subgrade b) Very good subgrade d) None of the above

101. The weight of Sandy soil for Hydrometer Analysis is ______. a) 10 grams c) 50 grams b) 25 grams d) 100 grams

102. The weight of Clayey or Silty soil for Hydrometer Analysis is ______. a) 10 grams c) 50 grams b) 25 grams d) 100 grams

103. A 25 grams fine-grained soil can be dried in about ______. a) 1 hour c) 3 hours b) 2 hours d) 4 hours

104. A 25 grams sandy soil can be dried in about ______. a) 1 hour c) 3 hours b) 2 hours d) 4 hours

105. ________ is a type of soil in which most of the soil grains are of the same size. a) Poorly graded c) Gap graded b) Well graded d) Non of the above

106. The soil grained are force apart by the water added, thus the grain is reduced, what is the method used? a) Lubrication c) Swelling b) Welting d) Saturation

107. Percent passing loose for coarse aggregates when tested for clay lump is _____.

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a) 0.1 mass percent c) 0.8 mass percent b) 0.25 mass percent d) 1.0 mass percent

108. The mass percent passing loose for coarse aggregates when tested in soft fragment is ____. a) 0.10 c) 3.5 b) 0.25 d) 1.00

109. If slag is used, the density of coarse aggregate is ______. a) 30 100 kg/cu. m c) 1,120 kg/cu. m b) 150 kg /cu. m d) 1,400 kg/cu. m

110. Mass percent loose for fine aggregates when tested in Clay lumps is _____. a) 0.10 c) 0.80 b) 0.25 d) 1.0

111. _________ is a type of cement, which shall be transferred to an elevated, air tight and weatherproof bins storage. a) Portland Cement c) Bulk Cement b) Pozzolan Cement d) None of the above

112. Scales for weighing aggregates and cement shall be accurate within _____. a) 0.1% c) 0.5% b) 0.25% d) 1.9%

113. The minimum thickness of conventional concrete as the surface course in monolithic pavement is _____. a) 50 mm c) 100 mm b) 75 mm d) 150 mm

114. _____________ determines the resistance of the emulsion to break when mixed with mineral aggregate. a) Viscosity Test c) Spot test b) Distillation Test d) Cement Mixing

115. _____________ is an instrument used for rapid in site measurement of the structural properties of existing road

pavement. a) Pundit Ultra Sonic Concrete Tester b) Dynamic Core Penetrometer c) Falling Weight Deflectometer d) Core Test

116. How many days does the emulsified asphalt must be tested after delivery at temperature 40*F(4.5*C). a) 10 days c) 14 days b) 12 days d) 16 days

117. In bituminous mixture, asphalt content is 5 8% and 92 - 95% aggregates, what will be the amount of additives? a) not more than 2% c) more than 2% b) not more than 3% d) more than 4%

118. ___________ determines the effect of water on the cohesion of the mixture a) Stability Test c) Distillation b) Solubility d) Immersion-Compression Test

119. The distance of the sample by grooving before rotating the brass cup is _____. a) c) b) d) 1

120. The most common method of assessing strength and stiffness of both subgrade and pavement is _______. a) FDT c) SPT b) CBR d)Non of the above

121. How many days do the specimen for CBR soaked? a) 1 day c) 3 days b) 2 days d) 4 days

122. When mixed at the site or in a central mixing plant, the mixing time shall not be less than _50_ seconds nor more than _90_ seconds unless mixer performance test prove adequate mixing of the concrete in a shorter time period.

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123. The batches shall be so charged into the drum that a portion of the mixing water shall enter in advance of the cement and aggregate. The flow of water shall be uniform and all water should be in the drum by the end of the _15_ seconds of the mixing period

124. The time elapsed from the time water is added to the mix until the concrete is deposited at the site shall not exceed _90_ minutes when concrete is hauled in the truck.

125. When concrete is delivered in truck mixers, additional water may be added to the batch and additional mixing performed to increase the slump to meet the specified requirement if permitted by the Engineer, provided all these operation are performed within _45_ minutes after the initial mixing operation and the water and cement ratio is not exceeded

126. Concrete not placed within _90_ minutes from the time the ingredients were charge into the mixing drum should not be use.

127. The completed pavement shall be accepted on a lot basis. A lot shall be considered as _500_ linear meter double lane

128. Each lot shall be divided into _5_ equal segment and one core will be obtained from each segment in accordance with AASHTO T24.

129. Aggregate account for 92 95% of the weight of the bituminous mix while asphalts for 5 8% of the weight of the mix. The exact percentage to be used is determine by the _Trial Mix_.

130. _Blue smoke_ is an indication that the asphalt is over heated

131. The penetrator test is an indication of the _Consistancy_ of the asphalt

132. _Marshall Stability Test_is the most common used method in the design and evaluation of bituminous concrete mixes

133. _Extraction Test_ determines the asphalt content in the bituminous mixes.

134. Cast in place concrete shall not be post-tensioned until at least _10_ days and until the compressive strength has reached the strength specified

135. This is the characteristic generally used for calculation of the volume occupied by the aggregate in various mixture containing aggregates including Portland Cement concrete, bituminous concrete, and other mixtures that are proportioned or analyzed on an absolute volume basis. Answere: Bulk Specific Gravity

136. _Apparent Specific Gravity_ pertains to the relative density of the soil material making up the constituents particle not including the pore space within the particles that is accessible to water.

137. Weight of sandy soil needed for Hydrometer test is _100 grams_

138. Weight of silty or clayey soil needed for Hydrometer test is _50 grams_

139. These are widely used to control the characteristics of soil which are to be incorporated in roadway. Ans. Liquid and Plastic Limits

140. This is defined as the highest moisture content of which the mass attains its minimum volume but continues to lose weight /mass.

Ans. Shrinkage Limit

141. _Le Chattelier Flask___ is an apparatus used in determination of specific gravity of Hydraulic Cement.

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142. _Autoclave Machine_ is an equipment used in determination of soundness of Portland Cement

143. Asphalt shall be homogeneous, free from water, and shall not foam when heated to _175* C(347* F)_

144. _Cement Mixing Test of Asphalt_ indicate the rate at which the asphalt emulsion will break when mix with aggregate.

145. The lost in weight of rock used in gabions when tested to sodium sulfate, soundness loss shall not exceeds__9%__

146. Gabions dimensions are subject to a tolerance limit of _+/- 3%_

147. The pour point of concrete joint sealer shall be at least 11*C (20*F) lower than the safe heating temperature, which is the maximum temperature to which the material may be heated without exceeding the permitted flow.

148. The penetration of concrete joint sealer, Hot Poured Elastic Type shall not exceed_90_

149. The CBR is generally selected at _2.54 mm (0.10 in)_ penetration.

150. If the ratio at 5.08 mm (0.21 in ) penetration is greater, there should be _Rerun_

151. If the check test gives a similar result, the ratio at 5.08 mm penetration shall be__adopted or used__

152. The penetration piston of CBR machine should have a uniform penetration at a rate of __1.30 mm/min__

153. During soaking maintain the water level in the mold and the soaking tank is approximately __25.40 mm ( 1.0 in )__ above the top of the specimen

154. Soak the specimen for _96 hours ( 4days )__

155. The diameter of penetration piston is ____ .

Ans. 49.63 +/- 0.23 mm ( 1935 cu m )

156. The temperature of the asphalt cement delivered to the mixer shall be as required to achieve a kinetic viscosity in the range of ______. Ans. 150 to 300 cu m/s or 150 to 300 centistokes

157. ______ is the viscosity used to grade asphalt cement . Ans. 149 F ( 60*C )

158. The coarse aggregate used in asphalt mix is ____ .

Ans. Retained by 2.36mm (no. 8 sieve)

159. The application temperature of emulsified asphalt range from ____.

Ans. 10-71*C

160. When the tar is used for seal coats, it shall be heated to free flowing but not to exceed ___________. Ans. 149*C

161. _______ is used to determine the soil strength parameter.

Ans. Unconfined and Tri-Axial Compression Test

162. ________ is used to determine the settlement characteristic of soil. Ans. Consolidation

163. The weight of disturbed samples from hard auger or split spoon shall be at least__________ Ans. 1.0 kg

164. The undisturbed samples from Shellby Tube shall be at least______. Ans.. 18 long

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165. _______ determines the pile bearing capacity by loading one or more piles and measuring settlement under load. Ans. Pile Load Test

166. ________ determines the in-site shear strength of soft to medium clay. Ans. Vane Shear Test

167. _______ determine the soil bearing capacity by loading a steel plate usually 30 inches in diameter. Ans. Plate Bearing Test

168. Laboratory which measures, examines, calibrate or otherwise determine the characteristic or performance materials or products.

Ans.. Testing Laboratory

169. Standard technical procedure to determine one or more specified characteristic of material product is called___. Ans. Test Method

170. A document which prevents the test results and other information relevant to test is called _____ Ans.. Test Report

171. __________ is a document signed by the Director of BRS issued to Testing laboratory authorizing them to perform the required test in behalf of DPWH. Ans. Certificate of Accreditation

172. This test have been developed to measure the loss of cohesion as a result of water action on the compacted bituminous mixture. Ans. Film Stripping & Immersion Compression Test

173. This mean porosity or perviousness of the mixture, a dense grade mix prevent water from entering the base through the surface. Ans.. Permeability

174. This is used in classifying liquid asphalt into grades. It is useful as a measure to control of consistency, particularly when run at the temperature of intended application Ans Viscosity Test

175. This test determines the total bitumen content of a asphaltic materials, which is the actual cementing constituent of the asphalt. Ans.. Solubility Test

176. This is an accelerated test to show the loss of volatiles when the sample is heated at 163*C for five hours and the loss due to volatilization is determined. Ans Loss on Heating

177. This test classifies the different asphalt into types and the different types into grade. Ans.. Consistency Test

178. For liquid asphaltic materials, this test is run on the residue after distillation.. Ans.. Quality Test

179. This is one of the most important engineering properties of soil. It is defined as its ability to resist sliding along internal surface within the mass.. Ans.. Shearing Strength of Soil

180. This is an arbitrary measurement of consistency and is the basis of classification of all solid and semi-solid asphalt. Ans.. Penetration Test of Asphalt

181. This is a process to measure the consistency of liquid asphaltic materials to determine their fluidity or resistance to flow. Ans.. Viscosity Test

182. _________ was developed in order to differentiate bituminous materials with respect to hardening characteristic. Ans.. Thin Film Oven Test

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183. Plant-mixed bituminous mixtures should be sampled in accordance with the Standard Method of Sampling Bituminous Mixture. A sample not less than ______ kg is taken and place in sample bag that would insure against contamination. This is taken every 75 cu m or 130 tons of mix. Ans.. 10 kgs

184. The bearing blocks of the compression machine should be at least _____ greater than the diameter of the specimen. Ans.. 3.0 %

185. The bottom bearing block shall be at least _____ thick when new Ans. 1.0 ( 22.50 mm )

186. The bottom bearing block shall be at least _______ thick after any resurfacing operations.. Ans. 0.9 ( 22.50 mm )

187. The curing temperature of a specimen before testing is ______. Ans. 18*C to 24*C

188. The apparatus used to determine the flash point of asphaltic material is called ____ Ans. Cleveland Open Cup

189. The asphalt samples for ductility and penetration test should be subjected to water bath at a temperature of 25*C for ____. Ans.. 11/2 hours

190. The concrete shall not be left exposed for more than ____ hour between stages of curing or during the curing period. Ans.. hour

191. The rate of application of bituminous prime coat is ____. a) 1-2L/sq. m. c) 0.2-1.5L/sq. m. b) 0.2-0.7L/sq. m. d) 0.5-2L/sq. m.

192. Another name for asphalt joint filler is_______. a) asphalt cement c) blown asphalt b) rock asphalt d) cutback asphalt

193. In asphalting work, there are _______ phase of rolling a) 2 c)1 b) 3 d) 4

194. The _____ test determines the asphalt content in the bituminous mix. a) Grading c)Extraction b)Bulk Specific Gravity d) Absorption

195. In a bituminous mix, there are 3 kinds of aggregate. What kind of passes the no. 200 sieve? a) Coarse c) Mineral Filler b) Fine d) Admixture

196. Liquid asphalt is also called ___________. a) Cutback asphalt c) Blown asphalt b) Emulsion d) Asphalt cement

197. The different test for soil classification are: a) compaction and FDT b) Hydrometer test and moisture content c) Grading, LL and PL test

198. The apparatus/equipment used in the liquid limit and plastic limit test is called___ . a) sieves and chisel c) mortar and pestle b) Atterberg Device and glass plate

199. _________ is a method of laboratory sampling. a) Mixing c) Proportioning b) Using mechanical splitter/quartering

200. In laboratory compaction test/moisture density relation test, what is the specification of rammer? a) 5.5 lb. (2.5 kg) with 12 in drop c) 10 lb. (4.5 kg) in weight with

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18 in drop b) 8 lb. (3.6 kg) in weight with 16 in drop

201. What is the specification of mass present passing in sieve 0.075 mm (No. 200 ) grading A for aggregate base course. a) 20-14 c) 0 6 b) 0 12

202. The number of specimen samples in testing concrete hollow block is _____. a) 6 pcs./20,000 units (3 for absorption test and 3 for strength test ) b) 4 pcs./20,000 units c) 8 pcs./20,000 units

203. Is it really necessary to cure concrete specimen? a) Yes c) No b) None of the two

204. The kind of test that determines the consistency of concrete is _____. a) Slump test c) Abrasion test b) Specific Gravity

205. What is the dimension of concrete cylindrical sample? a) 6 dia. And 12 high c) 8 dia. And 14 high b) 4 dia and 8 high

206. In the absence of concrete beam mold at the project site, are concrete cylindrical molds allowed by the specification to be used in sampler for item 311 PCCP? a) Yes b) may be c) No

207. The minimum percent compaction for embankment is _______. a) 92% c) 95% c) 97%

208. The minimum percent compaction for base of the road is ______. a) 100% b)110% c) 105%

209. The CBR value of aggregate base course is not less than ____. a) 80% b) 90% c) 85%

210. The CBR value of aggregate subbase course is not less than ____. a) 25% b)35% c) 30%

211. The minimum compressive strength for class A concrete is ________. a) 3,000 psi. ( 20.7 MN/sq. m ) b) 2,400 psi. ( 16.7 MN/sq. m. ) c) 5,000 psi. ( 37.7 MN/sq. m. )

212. What is the significance of determination of the tensile properties of reinforcing steel bars? a) This method is intended to determine the yield and tensile strength of the bar as well as its elongation, and is used to classify the bars into grade b) This method is intended to evaluate the ductile properties of the reinforcing bars c) None of the above

213. A tie bar should be ______ a) deformed bar b) round bar c) flat bar

214. A dowel bar should be ____________. a) deformed bar b) round bar c) flat bar

215. The mortar for masonry shall consist of ________. a) one part Portland Cement and 2 parts of sand b) one part Portland Cement and 3 parts of sand c) one part Portland Cement and 4 parts of sand

216. The apparatus used to measure the thickness or height of compacted bituminous paving mixture. a) Ruler b) Vernier Califer c) Steel Tape

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217. It is used in calculating the unit weight of the mixture and the degree of compaction of the asphalt pavement. a) Bulk Specific Gravity of compacted bituminous mixtures using saturated surface dry specimen. b) Dry unit weight of compacted bituminous mixtures c) Mass of specimen in water

218. The test which covers the quantitative determination of bitumen in hot- mixed paving mixtures and pavement samples for specification acceptance, service evaluation, control and research. a) Extraction b) Spot Test Flash Point

219. The solvent used in extraction of bitumen is _____. a) Diesel oil b) Gasoline c) Water

220. The percent of bitumen content is computed based on ______. a) mass of raw sample b) mass of dry aggregate c)mass of asphalt

221. The method used to determine the grading of aggregate extracted from bituminous mixture is ____. a) Mechanical analysis of extracted aggregate b) Stability Test c) Viscosity

222. The drying temperature of sample is ________ a) 110 +/- 5*C b) 100 +/- 5*C c)100*C

223. _______ is a solid asphalt which is a basic constituent of all other asphalt called as hot asphalt or penetration grade asphalt. a) Asphalt Cement b) Emulsified Asphalt c) Cutback Asphalt

224. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and kerosene. a) Medium Curing Cutback b) Asphalt Cement c) Rapid Curing Cutback

225. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and oil. a) Slow Curing Cutback b) Emulsified Asphalt c) Blown Asphalt

226. ________ is a kind of liquid asphalt which is a mixture of asphalt cement and gasoline a) rapid Curing Cutback b) Blown Asphalt c) Joint Filler

227. Asphalt is defined as _________. a) A petroleum product b) A dark brown to black cementitious materials whose consistency range s from solid to semi-solid and whose main constituent is called bitumen which is either found in nature or as a residue in petroleum refining. c) None of the above

228. It is a kind of liquid asphalt which is a mixture of asphalt cement and water with emulsified with pungent odor. a) Emulsified Asphalt b) Asphalt Cement c) Rapid Curing Asphalt

229. Joint filler in concrete pavement is a __________. a) Blown Asphalt b) Hot asphalt c) Liquid asphalt

230. A device used to measure the relative hardness of asphalt is __________. a) Penetrometer b) Spectometer c) Vicat Apparatus

231. A property of asphalt cement to stretch without breaking is called________. a) Ductility b) Durability c)Tensile

232. It is a point where the volatile components of asphalt will evaporate. a) Fire Point b) Flash Point c) Center Point

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233. It determines whether asphalt is over heated or not during the process of manufacture. a) Spot Test b) Boil Test c) Extraction Test

234. An apparatus used to determine the specific gravity of asphalt is called ______. a) Metal Pycnometer b) Glass Pycnometer c) any bottle

235. Consistency test for asphalt is called___________. a) Viscosity b) Slump test c) Loss in ting

236. A process of volatilization test which measures the relative proportion of asphalt to oil. a) Distillation b) Extraction c)Float Test

237. It is a period wherein the asphalt begins to melt. a) Softening Point b)Boiling Point c)Fire Point

238. The sampling requirement of asphalt is _____ . a) 1 sample for every 200 drums or 40 metric tons b) 1 sample for every 100 drums c) 1 sample for every shipment

239. The component of bituminous mixes which range from 92 to 96% is called __________. a) Bituminous Blended Aggregate b) Concrete Aggregate c) Sand

240. ____________ is a property of bituminous mixes in pavement to resist deformation or displacement due to impose load or repeated loading. a) Stability b)Flexibility c)Tensile

241. ____________ is a property of bituminous mixes in pavement to resist disintegration or deterioration due to the action of water, traffic and changing climate

a) Durability b) Flexibility c)Ductility

242. ____________ is a property of bituminous mixes in pavement adjust itself to settlement a) Flexibility b) Rigidity Hardness

243. These are the factor affecting the workability of bituminous mixes a) Gradation of aggregate, quality of asphalt, and temperature of mix b) Surface texture and temperature mix c) Quantity of aggregates and asphalt content

244. The dry molded asphalt sample in the immersion compression test is submerged in water for ____. a) 4 days b) 4 hours c) 2 days

245. The percent index retention is computed in the formula ___________. a) Wet Stability/Dry Stability x 100 b) Dry Stability/Wet Stability x 100 c) Wet Stability Dry Stability/Dry Stability x 100

246. The sampling requirement of bituminous mixes is _____. a) 1 sample for every 75 cu. m. b) 1 sample for every 150 cu. m. c) 1 sample per delivery per day

247. The application of liquid asphaltic material on a prepared untreated base is _____. a) Prime Coating b) Seal Coating c) Tack Coating

248. The application of liquid asphaltic material to an existing surface is ____ . a) Tack Coating c) Prime Coating b) Seal Coating

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249. The application of asphaltic material and aggregate to an existing surface for the purpose of sealing it against the infiltration of water or surface moisture is called ____ a) Seal Coating b) Tack Coating c) Prime Coating

250. The rate of application of prime coating using cutback asphalt is ______. a) 1-2 liters/sq. m b) 0.5-1 liter/ sq. m c) 2-3 liters/sq. m

251. The rate of application of tack coating using liquid or emulsified asphalt is __________. a) 0.2-0.7 li/sq.m b) 0.1-0.5 li/sq. m c) 2 li/sq. m.

252. The rate of application of seal coat using asphalt cement is ________. a) 0.9-1.8 li/sq. m b) 10-11 li/sq. m c) 8-9 li/sq. m

253. The rate of application of seal coat using cutback asphalt is ________. a) 1.5-3.0li/sq. m b) 2.0-3.0 li/sq. m c) 1-2 li/sq .m

254. The primary quality control mechanism for the production of asphalt mies with high degree of uniformity that will satisfy job requirement is ________________. a) Job mix formula b) Quality control formula c) Assurance

255. The objective of designing the asphalt mixture is determination of ______. a) Type and grade of asphalt, proportion of coarse, fine and mineral filler, if used and asphalt content. b) To produce a desirable characteristic of pavement which are stable, durable, flexible and skid resistance. C) All of the above

256. The percent asphalt content in hot laid bituminous mixture range from ______ a) 5-8% b) 4-6% c) 5-10%

257. The placing temperature for bituminous mixture measured in the truck prior to dumping is ______. a) at least 107*C b) at least 120*C c) at least 150*C

258. The second phase of rolling the spread bituminous mixture is called breakdown rolling which is the one responsible to attain the maximum density. This rolling is carried out by the use of ______. a) pneumatic roller b) steel roller c) sheepfoot roller

259. The significance of final rolling is to remove the roller marks to previous rolling in order to have a good finish pavement with a temperature of 160*F. a) True b) False c) Maybe

260. The proper way of rolling should begin at _____________________. a) the sides and proceeds longitudinally towards the roads center, each strip overlapping on half the roller width, gradually progressing the crown of the road b) the center and proceeding longitudinally toward the side of the road c) any part of the road provided each strip overlapping on half the roller width

261. What is the minimum degree of compaction of asphalt pavement? a) not lee than 97% of the density of the laboratory compacted specimen b) not less than 100% of the density of the laboratory compacted specimen c) not less than 85% of the density of the laboratory compacted specimen

262. What is the color of asphalt when it is overcook? a) yellowish brown b) black c)gray

263. _____________ determines the thickness and density of compacted asphalt pavement. a) Core test b) FDT c) X-ray

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264. The cored sample of asphalt pavement is measured at ______________. a) approximately quarter points b) three points c) two points

265. Too much asphalt content in the bituminous mixes causes ____________ . a) bleeding b) potholes c) cracks

266. The wearing away of the pavement surface caused by the dislodging of aggregate particle is called ______________. a) raveling b) alligator crack c) rutting

267. Interconnected cracks forming a series of small blocks resembling an alligators skin or chicken wire is called ____________. a) alligator cracking b) reflection cracking c) bleeding

268. __________ is the type of cement to be used in the DPWH infrastructure project as indicated in the Blue Book. a) Portland Cement Type I b) Pozzolan Cement Portland Cement Type II

269. If the fine aggregates are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed ___________ a) 10 mass percent b) 5 mass percent c) 3 mass percent

270. If the coarse aggregate are subjected to five cycles of sodium sulfate soundness test, the weighted loss shall not exceed____________. a) 12 mass percent b) 15 mass percent 10 mass percent

271. The mass percent of wear of coarse aggregates for item 311 when tested by AASHTO 96 is not greater than ____________. a) 40% b) 45% c) 50%

272. The design of concrete mix specified by the blue book is based on ________________. a) Absolute Volume Method b) Area Method c) American Method

273. The minimum flexural strength requirement of beam sample when tested by third point loading method is ____________. a) 3.5 Mpa b) 3.8 Mpa c) 4.0 Mpa

274. The minimum flexural strength requirement of beam sample when tested by midpoint method is ____________. a) 4.5 Mpa b) 3.5 Mpa c) 5.0 Mpa

275. ____________ are additives used in mixing concrete. a) sodium chloride b) admixtures c) curing agent

276. ____________ determines the consistency of concrete. a) Slump Test b) consolidation test c) viscosity

277. Equipment used in the consolidation of fresh concrete. a) jack hammer b) vibrator c) drilling machine

278. The prescribed forms to be used in concrete paving is called ____________ a) steel forms b) wooden c) combination of steel and wood

279. The initial setting time of Portland cement is not less than _________________. a) 30 min. b) 60 min. c) 90 min.

280. The final setting time of Portland cement Type I is _____________. a) 10 hrs. b) 24 hrs. c) 36 hrs.

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281. The standard sand used in testing the mortar strength of Portland cement is called __________. a) Ottawa Sand b) Beach Sand c) River Sand

282. The apparatus used in determining the fineness of Portland cement by air permeability is __________ . a) Blaine Air Permeability Apparatus b) Sieve No. 200 c) Gillmore

283. A mixture of cement and water is called ____________. a) cement paste b) mortar paste c) concrete paste

284. The apparatus used to determine the initial and final setting of cement in the laboratory is _________. a) Gillmore needles b) Bailey needle c) Vicat apparatus

285. The compressive strength of cement mortar sample in seven days is not less than _________. a) 19.3 MN/sq. m b) 20 MN/sq. m c) 24 MN/sq. m

286. What is the appearance of the molded cement paste which fails to meet the autoclave expansion.______________. a) crumble b) shiny c) changes color

287. The dimension of beam sample for paving concrete is ___________. a) 6 x 6 x 21 b) 6 x 6 x 24 c) 4 x 4 x218

288. The critical number of days of curing concrete is ____________. a) first seven days b) first 10 days c) 28 days

289. The standard dimension of concrete cylindrical sample is ___________. a) 6 dia. and 12 tall b) 6 dia. and 6 tall c) 6 dia. and 8 tall

290. There are two layers in performing sampling of beam samples. How many number of blows are required per layer? a) 63 blows b) 75 blows c) 50 blows

291. There are three layers in performing sampling of concrete cylinder. How many blows are required per layer? a) 25 blows b) 30 blows c ) 35 blows

292. The formula which determines the proportion of the mix which can meet the desired strength requirement of concrete is called____________. a) design of concrete mix b) Boyles Formula c) Bernoulis Formula

293. The minimum testing requirement for every project is indicated in a duly approved________. a) Quality Control Program b) Program of Work c) Work Schedule

294. It is prescribed in each project based on estimated quantities and specifies the kind and number of test for each item of work. a) Minimum number of work b) Minimum Testing Requirement c) Work Schedule

295. Embankment materials delivered at the job site was about 12,000 cu. m. The minimum test requirement calls for 1 G, P, C for every 1,500 cu. m. a) 10 G, P, C b) 8 G, P, C c) 6 G, P, C

296. of There is 1 Q cement required for every _________________. a) 4,000 bags or fraction thereof b) 2,000 bags or fraction thereof c) 10,000 bags

297. There is Q of cement required for every ____________________. a) 20,000 kg or fraction thereof

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b) 10,000 kg or fraction thereof c)115,000 kg or fraction thereof

298. How many set of beam samples taken for every 75 cu. m. of concrete poured per day? a) one ( 1 ) set b) two ( 2 ) sets c) three ( 3 ) sets

299. In a completed pavement, what is the minimum core samples required before payment is effected? (Assuming that the thickness is 23 cm. ) a) Five holes per km per lane b) One hole per 500m c) P.E. Certificate

300. In a Barangay road, what is the minimum requirement for thickness determination of its completed pavement? a) Five holes per km per lane b) P.E. Certificate c) One hole

301. A qulity test is one of the minimum requirement for item 200 aggregate subbase course. a) True b) False c)optional

302. There is no CBR test for item 300 aggregate surface course. a) True b) False c) optional

303. In item 311 and 405, grading is perform _______________. a) for every 75 cu. m. b) for every 300 cu. m. c) none

304. For pipe culverts and storm drains, the minimum test is 1 Pipe for every 50 pipes. What is the alternative requirement? a) 1 set consisting of 3 concrete cylinder samples for not more than 25 pipes cast in the field and 1 inspection report for each size for not more than 25 pipes cast in the field. b) inspection report is enough c) Mill Certificate

305. The minimum test requirement for paint is ______________. a) 1 sample for every 100 cans or fraction thereof b) 1 sample for every 50 cans or fraction thereof c) Mill Certificate

306. The minimum test requirement for water used in concrete for a questionable source is ______. a) P.E. Certificate b) 1 Quality Test c) Inspection Report

307. Based on the maximum dry density obtained by laboratory test, the degree of compaction required for aggregate subbase should be at least _______________________. a) 95% c) 100% b) 98% d) none of the above

308. Per our present Specification for Highways and Bridges including amendments, it is mandatory to open PCCP to traffic not later than ___________. a) 7 days after pouring b) 21 days after pouring c) 14 days after pouring d) 28 days after pouring

309. In casting reinforced concrete railings, the concrete used is _____________. a) Class A1 c) Class C1 b) Class A2 d) any of the preceding classes

310. For efficient compaction, the embankment materials should at the time of rolling be ______. a) dry c) at optimum moisture content b) wet d) at maximum moisture content

311. For a road base course the most preferable material is one with CBR of ____________. a) 60 c) 50 b) 30 d) 80

312. Peat and muck are ______________. a) fair subgrade spoil c) unstable soil b) stable soil d) good subgrade soil

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313. The slump test on concrete is a measure ______________ a) strength c) consistency b) unit weight d) durability

314. The fineness modulus is highest of _________________. a) fine sand c) very coarse sand b) very fine sand d) coarse sand

315. If concrete is continuously moist cured, it will gain strength beyond 180 days. a) True c) it depends on curing temperature b) False

316. The quality of paying concrete is usually measured by its _____________. a) compressive c) flexural b) tensile d) bond strength

317. Generally speaking, batching of concrete aggregates by volume is preferable than weight. a) True c) False b) they are the same

318. If angular coarse aggregate is used in a concrete mix, it will require more ________________ a) water c) water and fine aggregates b) fine aggregates d) neither a and b

319. The most favorable period for curing concrete is ______________. a) during the first few days or week b) after 3 days c) after one week d) before 28 days

320. Lower water content ratio in concrete mixes improves ________________. a) strength c) water tightness b) durability d) all of the preceding

321. When concrete must be placed in a sloping surface, placing should start at the __________. a) bottom c) can be top or bottom b) top

322. The maximum percent abrasion loss allowed for concrete coarse aggregate is __________. a) 30% c) 45% b) 40% d) 50%

323. The plasticity index of aggregate base course should be not greater than ___________. a) 6 c)10 b) 8 d) 12

324. In casting of reinforced concrete pile, the concrete used is ____________. a) A1 c) C1 b) D d) C2

325. The natural water content of highly organic soil is __________. a) less than 20 c) between 50 and 100 b) between 20 and 50 d) more than 100%

326. Which of the following dead load is equivalent for loose sand, earth and gravel fill? a) 2,403 tons/cu. m. c) 1,603 tons/cu. m. b) 1,922 tons/cu. m. d) 2,150 tons/cu. m.

327. Rate of application for curing compound is _______________. a) 0.30 li/sq. m. c) 0.15 li/sq. m. b) 0.20 li/sq. m. d) 0.10 li/sq. m.

328. During coring of completed pavement, how many cores /km/lane is required as per specification? a) 4 c) 6 b) 5 d) 7

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329. What is the correct proportion for concrete masonry work? a) 1: 2 c) 1: 4 b) 1: 3 d) 1 : 5

330. The opening of No. 4 sieve is bigger than the opening of a sieve. a) true b) false c) they are the same

331. The standard compaction test on predominantly fine grained soils is performed on soil fraction passing sieve no. ___________. a) 200 c) 16 b) 40 d) 4

332. Which plasticity index would you prefer for the base course of PCCP? a) less than 6 c) 10 to 12 b) 6 to 9 d) more than 12

333. A soil which is classified A-7 by the highway research board method will have a subgrade rating of __________. a) excellent c) fair b) good d) poor

334. The empirical number used in design is ____________. a) plasticity index b) group index c) both of the preceding

335. Soil is fully saturated at optimum moisture content. a) true b) false c) it depends on void ratio

336. Water content of soil is generally base on ____________. a) total weight of soil c) weight of solids b) total volume of soil d) unit weight test

337. Optimum water content of soil is determined by ______________. a) field density test c) compaction test b) liquid limit test d) unit weight test

338. The particle size distribution of soil is determined by __________________. a) liquid limit granular c) sieve analysis test b) plastic limit test d) any of the preceding test

339. Which of the following are most suitable for construction of highway embankments? a) granular c) plastic b) fine- grained d) clayey

340. The particle size distribution of sandy gravel is determined by ________. a) hydrometer test c) dilantacy test b) sieve test d) any of the preceding test

341. The best soil for a road subgrade would behave a group index of ___________ a) less than 3 c) 11 to 15 b) 5 to 10 d) 16 to 20

342. The highest moisture content in the plastic state of fine grained soil is the ___________. a) liquid limit b) plastic limit

343. Which of the following is characterizes unsuitable materials? a) soil with liquid limit exceeding 80 b) plasticity index exceeding 55 c) soil with natural water content exceeding 100% d) all of the above

344. Shringkage factor test is _______________. a) test to determine pay volume b) test to determine strength characteristic c) test to determine volume change d) test to determine maximum density

345. Soil is fully saturated if the water content is ______________. a) at optimum amount c) more than 100&% b) 100% d) none of the peceeding

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346. The density to which a soil can be compacted is related to ____________. a) compactive effort c) both a and b b) water content d) neither a or b

347. Specification require 1 quality test every ___________ of asphalt mix. a) 40 ton c) 50 tons b) 130 tons d) 150 tons

348. All asphalt are _______, they became harder as temperature decreases and softer as their temperature increases. a) thermoplastic c) brittle b) hyrophobic d) none of the above

349. The viscosity of the asphalt during mixing and lay down is ____________. a) viscosity at 135*C c) viscosity at 60*C b) viscosity at 125*C d) viscosity at 163*C

350. The trial section for compaction for each type of fill materials and type of equipment to be used in the work should have an area of__________. a) 500 sq. m. c) 600 sq. m. b) 335 sq. m. d) 400 sq. m.

351. Control slip shall have an area of approximately ____________. a) 500 sq. m. c) 600 sq. m. b) 335 sq. m. d) 400 sq. m.

352. Fine aggregate used in asphalt mix is the one ________________. a) passing the no. 8 sieve b) passing the no. 30 sieve c) passing the no. 200 sieve d) returned the no. 8 sieve

353. The corrugation produce by brooming is _____________. a) 1.5 mm. c) 2.5 mm. b) 2.0 mm. d) 1.0 mm.

354. The higher the ________, the lower the penetration. a) specific gravity c) durability b) viscosity d) solubility

355. The required thickness of the thermoplastic paint in PCCP is __________. a) 3.2 to 4.8 mm. c) 3.3 to 3.8 mm. b) 3.0 to 4.5 mm. d) 3.2 to 4.0 mm

356. What percent of hydrated lime shall be added to the mixture during mixing operation of asphalt mix? a) 0.5 to 1.0 mass % c) 0.75 to 1.2 mass % b) 1.0 to 1.5 mass % d) 0.2 to 0.7 mass %

357. As Materials Engineer, what would you recommend in order to check the suitability and efficiency of the equipment to used prior to subbase construction for item 310, Bituminous Concrete Surface Course? a) make a trial section c) make trial mix b) establish control strips d) none of the above

358. Quality of factor produced reinforced concrete pipes may be best established through what? a) compressive strength test b) flexural strength test c) core test d) crushing strength test

359. Result of Immersion Compression test conducted on a bituminous mix sample are as follow: Dry stability + 2,000 Kpa, Wet stability = 1,000 Kpa, What is the resulting Index of Retained Strength? a) 60% c) 50% b) 55% d) 70%

360. In DPWH Contract Projects, Quality Control is the sole responsibility of ___________. a) the DPWH project personnel b) the governments Materials Engineer c) the Contractor

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361. As Materials Engineer, when is the right time to start sampling and testing of materials to be incorporated into the work? a) before final payment b) before start of work items c) before first partial payment

362. The Spot Test on asphalt is used to determine what? a) cleanliness c) safe working temperature b)overheating during manufacture d) viscosity of the mix

363. Under what climate conditions do we use higher penetration grade asphalt cement? a) hot climate c) cold climate b) rainy weather d) none of the above

364. What is the basis for rejection or acceptance of any construction materials? a) Certificate of Billing c) Statement of work accomplished b) Materials Test Report d) none of the abcve

365. Initial rolling of bituminous mixes shall be performed with a ______ roller. a) vibrator c) sheepfoot b) pneumatic d) none of the above

366. In abituminous mix sample, what is the % of asphalt by a) weight of aggregate and by b) weight of mix? Given the following data: Weight of dry aggregates (after extraction) = 950 grams: Weight of Mix = 1010. A. a) 6.32% b)5.50% c) 6.0% d) none of the above B. a) 5.50% b) 6.32% c) 6.0% d) 5.94%

367. What grade of asphalt has a penetration grade of 0 30? a) emulsified asphalt c) blown asphalt b) asphalt cement d) none of the above

368. Problems regarding quality of construction materials shall be reported directly by the Contractors Materials Engineer to the

____________. a) DPWH Materials Engineer c) Contractors Project Engineer b) Contractor d) none of the above

369. If the RC pipes in the forgoing problem is not cast in the field, how many pipes will be required to be subjected to the Crushing Strength test? a) 75 pcs. b) 70 pcs. c) 100 pcs

370. How many concrete cylinder samples are required for 3,500 pcs. of reinforced concrete pipes? a) 14 sets of 3 c) 75 sets of 3 b) 140 sets of 3 d) none of the above

371. What is the bitumen obtained from the distillation coal or wood? a) rock asphalt c) emulsion b) tar d) none of the above

372. How do you reduce the viscosity of Medium Curing Cutback Asphalt? By mixing it with _______. a) gasoline c) kerosene b) diesel d) emulsion

373. What establish the exact percent of aggregates and asphalt content in a bituminous mix _______. a) design mix c) job mix formula b) job order d) extraction formula

374. What greatly influence the serviceability of an asphalt pavement? a) quality of aggregates and climate b) penetration grade and quantity of asphalt c) density and compaction of completed pavement

375. In asphalt pavement construction, how is the surface level of the completed pavement check? a) by T core test b) by density test c) by the use of 3 meter straight edge

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376. What primarily influence the grade of asphalt to be selected? a) penetration c) climate b) class of aggregate d) temperature

377. Who will approve the Job Mix Formula? a) DPWH Project/Materials Engineer b) Contractor c) Contractors Materials Engineer

378. What control during the mixing and compaction of the bituminous pavement is of great significance in the resulting pavement? a) compaction c) grading of aggregates b) density d) temperature

379. In asphalt pavement construction, there are three phases of rolling; what kind of roller is required to be used for the final compaction and smoothing? a) pneumatic roller b) sheepfoot roller c) tandem- smooth wheeled roller

380. What is the maximum speed of the roller in compaction of asphalt pavement? a) 4 kph c) 8 kph b) 5 kph d) 6 kph

381. What shall be checked after final rolling? a) degree of compaction b) optimum asphalt content c) quantity of aggregates

382. When is the completed asphalt pavement opened to traffic? a) when the asphalt has cooled to atmospheric temperature b) when the asphalt has cooled to +/- 10*C of the spreading temperature c) when asphalt is still hot

383. The apparatus used in determining the consistency of asphalt cement is ___________. a) penetrometer b) viscometer c) thermometer

384. How is the consistency of liquid asphalt determined? a) viscometer b) Tag open cup c) penetrometer

385. The Optimum Asphalt Content obtained in Marshall Stability Test is the average asphalt content of the Maximum Stability, Maximum Bulk Specific Gravity, and _________________. a) 4% Air Voids b) 2 mm flow c) 5% mineral content

386. What test determines the safe working temperature of the asphalt? a) Ductility test b) Flash Point Test c) Stability Test

387. _________________ are usually tested for extraction. a) Asphalt Mixes b) emulsions c) asphalt cement

388. Steel bars for the concrete reinforcement are tested for their __________ properties. a) tensile and bending b) compressive c) crushing

389. What method is used in determining the strength of concrete pipes? a) third point loading method b) center point loading method c) three edge bearing method

390. How many units shall be tested for strength, moisture and absorption in a lot of 120,000 CHB Ans.. 18 units

391. For 250 gallons of Reflectorized Traffic Paint, how many samples are required to be submitted for Quality Testing? a) 3 samples b) 2 samples c) 4 samples

392. The bituminous mix should have a mass % of air voids within the range of __________. a) 2 to 3% b) 1 to 4% c) 3 to 5%

393. Traffic paint shall be applied to the pavement at the rate of 0.33 li/sq. m. and shall dry sufficiently to be free it from cracking from

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___________. Ans. 150to 30 mins.

394. This is the only class of riprap that may consist of round natural stones. Ans.. Class A Riprap

395. The surface of riprap shall not vary from the theoretical surface by more than _________ mm. ay any point. Ans.. 100 mm.

396. Fine aggregates of masonry shall all passes the ________ mm. sieve. Ans.. 2.36 mm (No. 8 sieve )

397. Mortar that is not used within ______ minutes after the water has been added shall be discarded. Ans. 90 minutes

398. Maximum projection of rock faces beyond the pitch lines shall not be more than _____. Ans.. 50 mm.

399. In hot or dry weather, the masonry shall be satisfactory protected from the sun and shall be kept wet for a period at least _________ after completion. Ans.. Three ( 3 ) days

400. For pavement markings, the composition of white paint shall be _______ pigment and ______% of vehicle Ans.. 42 45 % pigment ; 53 55% vehicle

401. The composition of yellow paint shall be _______ pigment and ______ vehicle. Ans.. 23% pigment and 77% vehicle

402. The __________ material shall be of such quality that it will not darken or become yellow when a thin section is exposed to sunlight. Ans.. Non volatile material

403. ___________ consist of beads of good quality, optically clear, lead free glass with not less than 90% reasonably spherical and free from flows. Ans. Ballotini for reflective road paint

404. ___________ is a reflector which shall be the short base type having a maximum base area of 180 mm x 140 mm. Ans. Flash surface reflective stud

405. The pads shall be highly resilient and durable rubber reinforced with canvas and shall have a design life of at least ____________. Ans. Five ( 5 ) years

406. The reflectors shall have the minimum specific intensity value expressed as ______ of illumination. Ans.. Candle power per foot candle

407. The reflector shall support a vertical load of _____ when tested. Ans. 10 KN

408. When raised profile type reflector are specified the approved _______ epoxy adhesive shall be used . Ans. Two ( 2 ) parts

409. Expansion joint filler having a nominal thickness of less than ________ mm. shall not be subject to a requirement for water absorption. Ans. 9.5 mm

410. Expansion joint filler having a nominal thickness of less than ________ mm. shall not be subject to a requirement for compaction. Ans.. 13 mm.

411. Strip of the joint filler that do not conform to the specified dimension within the permissible variation of ______ mm. thickness ________ in depth shall be reflected. Ans. +/- 1.6 to 0 thickness ; +/- 3mm. in depth

412. These are finely divided residue that result from the combustion of ground or powdered coal. Ans. Fly Ash

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413. A light spray application of asphalt to an existing pavement as a seal to inhibit raveling, or seal the surface or both. Ans.. Fog Seal

414. A light application of bituminous material for the express purpose of laying and bonding loose dust. Ans.. Dust Binder

415. The aggregate that is graded from the maximum size, down to and including filler, with the object of obtaining a bituminous mix with a controlled void content and high stability is called. Ans. Dense graded aggregate

416. The bituminous material used to fill and seal cracks in existing pavement is called______. Ans. Crack filler

417. The application of sprayed bituminous coatings not involving the use of aggregate is called_____. Ans. Bituminous application

418. A mixture of bituminous material and mineral aggregate usually prepared in a conventional hot mix plant or drum mixer at a temperature of not more than ______ and spread and compacted at the job site at a temperature above _______. Ans. 260*F (127*C)/200*F (93*C)

419. __________ is an application of low viscosity bituminous material to an absorptive surface designed to penetrate, bond, and stabilize this existing surface and to promote adhesion between it and the new super-impose construction. Ans. Prime Coat

420. A uniform application of a mixture of emulsified asphalt, fine aggregate, mineral filler, and water to an existing pavement , single or multiple application may be used. Ans. Slurry Seal

421. _____________ is an application of bituminous material applied for an existing, relatively non-absorbent surface to provide a thorough

bond between old and new surfacing. Ans. Tack Coat

422. ____________ is a bituminous aggregate application to any type of road or pavement surface for the purpose of providing a wearing course, or surface seal or both. Ans. Treatment and Seals

423. ___________ is a bituminous-sand application to an existing pavement to seal the surface and to function as a light wearing course. Ans. Sand Seal

424. ___________ is a spray application of bituminous material used to temporarily stabilize a recently seeded area. The bituminous material can be applied to the soil or to a straw or hay mulch as a tie down. Ans. Mulch treatment

425. ___________ is a combination of bituminous material and aggregate that is physically mixed by mechanical means, spread on the job site and compacted. Ans. Bituminous Aggregate Mixtures

426. __________ is a combination of bituminous material and mineral aggregate applied at ambient temperature for use in patching holes, depression and distress area in existing pavement. Ans. Maintenance Mix

427. __________ is a pavement construction using essentially one-size aggregate which penetrated in place by an application of high viscosity bituminous material followed by an application of smaller size course aggregate and thoroughly rolled, Ans. Penetration Macadam

428. The glass beads used in traffic paint shall have a minimum of ______ % true spheres. Ans. 70%

429. The glass beads shall have a minimum refractive index of ______ . Ans. 1.50

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430. The white thermoplastic material shall not exceed a yellowish index of ______. Ans. 0.12

431. The thermoplastic material shall have a maximum percent residue of _____ after heating at 8 +/- 0.5 hours at 218 +/- 2*C Ans. 28%

432. The softening point of thermoplastic paint should be _______. Ans. 102.5+/-9.5*C

433. What kind of water shall be used in laboratory test especially if it deals with chemical? Ans. Distilled Water

434. Liquid limit brass cup with a sample is raised and allowed to drop sharply on the base through a height of what? Ans. 10 mm.

435. How many rotation per second will the crank of a liquid limit device be rotated? Ans. 2 rotation per seconds

436. What is the required size of calibrated sand used for FDT ? Ans. Any clean, dry, free- flowing, uncemented and passing # 10 and retained # 200 sieve

437. What is the degree of compaction of soil having a maximum dry density of 2,250 kg/cu. m. and wet density of soil from hole is equivalent to 2,335 kg/cu. m. and average moisture content of 8.85%? Ans. % degree of compaction = (dry density/Max. dry density ) x 100 = [2,335/(1+8.85/100)] / 2,250 x 100 = ( 2,145.15/2,250 ) x 100 = 9.34%

438. What is the standard diameter of an orifice in FDT sand cone? Ans. ( 12.7 mm )

439. Soil properties can be improved by ____________. a) Adequate compaction c) Maximizing water

content b) Additional binder d) Stabilization

440. As construction progresses, you noticed that the materials delivered at the project site are different from the one tested and passed the requirement, as Materials Engineer what would you do? a) Authorize the use of the materials b) Conduct immediate retesting of the materials for verification purposes c) Reject materials d) Replace the materials

441. What is the test criteria for RCPC test with three ( 3 ) Edge Bearing Test? a) 0.3 mm. c) 0.5 mm. b) 0.4 mm. d) 0.6 mm.

442. The Immersion Compression test is prepared to determine_________. a) ductility c) stability b) solubility d) flexibility

443. The use of sea water in reinforced concrete is not allowed due to ____________. a) no effect b) cause of reduction in ultimate strength of concrete c) induce corrosion of R.S.B d) b and c

444. If the soil is properly compacted at MDD it will __________. a) increase stability/strength b) minimize future settlement c) decrease permeability d) all of the above

445. Asphalt construction, compaction must be completed before the mixture cools to _______. a) 165*F ( 60*C ) c) 185*F ( 71*C ) b) 175*F ( 65*C ) d) 195*F ( 76*C )

446. Which contractor are required by DPWH to own the minimum material testing equipment for pre-qualification purposes?

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a) small c) large b) medium d) all of the above

447. As percent asphalt increases in Marshall stability test, the % Air voids____________. a) increases c) remains constant b) decreases d) a or b

448. The aggregate component contribute to shear strength and stability of bituminous mixture . The desirable shape and surface texture of aggregate is _________. a) round and smooth surface c) round and rough texture b) angular and smooth surface d) angular and rough texture

449. You can classify a soil sample in accordance to AASHTO through _________. a) Grain size analysis c) both a and b b) Atterberg limit d) none of the above

450. Who should take samples of materials and bring them to the laboratory for acceptance purposes? a) DPWH Materials Engineer c) Contractors Project Engineer b) Contractors Materials Engineer d) DPWH Project Engineer

451. How do you determine the diameter of RSB? a) by Vernier Caliper b) by unit weight