Is 4031 (Part-14) Method of Physical Tests for Hydraulic Cem

8/8/2019 Is 4031 (Part-14) Method of Physical Tests for Hydraulic Cem

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IS 4931( Part 14) t 1999Indian Standard

HYDRAULICCEMENT-METHODSOFPHYSICALTESTSPART 14 DETERMINATION OF FALSE SET

ma^fs WV5

UDC 666-9401557 : 666901559

@ BIS 1990

BUREAU OF INDIAN STANDARDSMANAK BHAVAN, 9 BAHADUR SHAH ZAFAR MARCNEW DELHI 110002

February990 Price Group 2

( Reaffirmed 1995 )


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Cement and Concrete Sectional Committee, BDC 2

FOREWORDThis Indian Standard ( Part 14 ) was adopted by the Bureau of Indian Standards on25 August 1989, after the draft finalized by the Cement and Concrete Sectional Committee hadbeen approved by the Civil Engineering Division Council.Hydraulic cements sometimes exhibit false set or premature stiffening on gauging with water.But further working with the trowel breaks up this set and the cement regains its plasticity andexhibits a normal setting time. False set is totally distinct from flash set. Criteria for accepting aset in cement as false set has been specified in different Indian Standards on hydraulic cement.The Cement and Concrete Sectional Committee, therefore, felt it necessary to lay down theprocedure for determining false set of hydraulic cement. This test is required to be carried outonly when a false set is suspected in cement.The composition of the Committee responsible for the formulation of this standard is given inAnnex A.For the purpose of deciding whether a particular requirement of this standard is complied with,the final value, observed or calculated, expressing the result of a test or analysis, shall be roundedoff in accordance with IS 2 : 1960 Rules for rounding off numerical values ( revised ). Thenumber of significant places retained in the rounded off value should be the same as that of thespecified value in this standard.


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IS 4031( Part 14 ) : 1989Indian Standard

HYDRAULICCEMENT-METHODSOFPHYSICALTESTSPART 14 DETERMINATION OF FALSE SET

1 SCOPE1.1 This standard (Part 14) covers theprocedure for determining false set of hydrauliccement.2 R E F E R E N C E S2.1 The following Indian Standards are neces-sary adjuncts to this standard:IS .hfo. Title1433 : 1965 Specification for beam scales( revised >3535 : 1986 Methods of sampling hydrauliccements ( jirst revision)5513 : 1976 Specification for Vicat apparatus(&St revision>3 SAMPLING AND SELECTION OF TESTSPECIMENS3.1 The sample of the cement shall be takenaccording to the requirements of IS 3535 : 1986and the relevant standard specification for thetype of cement being tested. The representativesample of the cement selected as above shallbe thoroughly mixed before testing.4 TEMP ERATURE AND HUMIDITY4.1 The temperature of the moulding room,dry materials, appliances and water shall bemaintained af 27 f 2?C. The relative humidityof the laboratory shall be 65 f 5 percent.5 APPARATUS5.1 Vica t App ar a t usVicat apparatus conforming to IS 5513 : 1976shall be used.5.2 B a l a n c eThe balance shall conform to Class B ofIS 1433 : 1965.

NOTE - Self-indicating balance with equivalentaccuracy may also be used.

5.3 WeightsThe weights in use shall conform to the

requirements specified in Weights and MeasuresRules.5.4 Gauging T r o w e lGauging trowel shall have a steel blade100 to 150 mm in length with straight edgesand weighing 210 f 10 g.5.5 G r a d u a t e d G la s s C y li n d e r s ,250 ml capacity.5.6 Mixing S labMixing slab shall be of non-absorbentof suitable size.6 P R O C E D U R E

200 to

material

6.1 Prepare a paste of weighed quantity ofcement (500 g ) with a weighed quantity( about 140 g ) of potable or distilled water,taking care that the time of gauging is not lessthan three minutes nor more than four minutesand the gauging. shall be completed before anysign of setting occurs. The gauging time shall becounted from the time of adding water to thedry cement until commencing to fill the Vicatmould. Fill the Vicat mould with this paste,the mould resting upon a non-poroug plate.After completely filling the mould, smooth offthe surface of the paste, making it level with thetop of the mould. The mould may be slightlyshaken to expel the air.

NO TE - Clean a ppliances shall be used for gauging.6.1.1 In filling the mould, the operators handsand the blade of the gauging trowel shall alonebe used.6.2 Place the test block confined in the mould,together with the non-porous resting plate,under the rod of Vicat apparatus bearinplunger; lower the plunger gently to tout % thethesurface of the test block, and quickly release,allowing it to sink into the paste. Thisoperation of releasing the plunger shall becarried out exactly after 20 seconds of comple-tion of mixing period.6.3 D e t e r m i n a t i o n o f I n i t i a l P e n e t r a t i o nPrepare trial pastes with varying percentagesof water as described above until the amount of

i 1
http://../link/13and14/1433.Bishttp://../link/31to60/3535.Bishttp://../link/31to60/5513.Bishttp://../link/31to60/5513.Bishttp://../link/31to60/3535.Bishttp://../link/13and14/1433.Bis


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,XS4031( P ar t 14 ) : 1989water necessary for making up the paste whichwill permit the Vicat plunger to penetrate toa point 28 to 36 mm from the top of the Vicatmould in 30 seconds of release of plunger i sobtained.6.4 D e t e r m i n a t i on o f F i n a l P e n e t r a t i o nAfter completion of initial penetration reading,remove the plunger from the paste, clean it, andreset the mould and the plate in a new position.This operation should be performed with aslittle disturbance as possible to the pasteconfined in the Vicat mould. Bring the plungeragain in contact with surface of the paste andrelease the plunger a second time, five minutesafter completion of the mixing period anddetermine the final penetration after 30 secondsof release of plunger.6.5 D e t e r m i n a t i on o f R e m k P e n e t r a t i o aIf the penetrations determined by the foregoingprocedure show the cement to be stiffeningrapidly, information as to the nature of stiff en-ing shall be obtained by testing as givenin 6.5.1 and 6.5.2.6.5.1 rlfter completing the measurement of thefive minutes penetration, immediately return

the paste to the mixing slab and remix thecontents for one minute.6.5.2 Fill the mould and determine thepenetration following the procedure specifiedin 6.3.

NOTES1 If early development of stiffness can be dispelled an dplasticity regained by further mixing without additionof water then it is termed as false set.2 If early development of stiffnesscannot be dispellednor can the plasticity be regained by furth er mixingwithout addition of water then it is term ed as flash set.

7 CALCULATION7.1 Calculate the percent of final penetration asthe ratio of f&l penetrationpenetration as f0110Ws:

P= -$x 100where

P = percent final penetration,A = initial penetration in mm,B = final penetration in mm.

to initial

and

ANNEX A

CAoirrplen

COMPOSITION OF THE TECHNICAL COMMITTEECement and Concrete S ectional Committee, BDC 2

ReprcwntingDBH.C, VI8VlisVABlYA National Council for Cement and Building Materials,New Delhi

M4lllhSHRI K. P. BANEBJEE

Saw HARISH N. MALANI ( Ahmats )SEX1 S. K:BxnExrmECHIEF ENBINEEB ( BD )Snnr J. C. Bnaun ( Altumdr )CEIEB EIUNBINEXGRDESIQNS )SUPE~UNTENDING ENOINEES ( S & S )

Larsen and Toubro Limited, BombayNational Test House, Calcutt aBhakra Beas Management Board, Nangal TownshipCentra l Public Works Depart ment , New Delhi

Cams ENQINEER ( RESEAR~E-CUM-D~HECT~B ) Irrigation Depart ment , Governm ent of Pun ,jabRESEARCH OFFICEIR CONCRETE TZCENOLOQY ) ( Alternatc )l-hBsomR A. P. Engineer ing Research Laborator&, Hyderaba d--~ ftUNT ~IbnCTOR ( Alternate )IbSBOTOUCmar RSC~EAWH OPFICER ( AftrrnntaI)IREo~R(C& MDD-II)

Dlrpory DIRECTIVE (C & MDD-II) (AUerna6e)Smr V. K. GEANEEAX

Centra l Soil and Materials Research Stat ion, New DelhiCentra l Water Commision, New DelhiStructural Engineering Research Crntrr ( CSIR ),Ghaziabad

Saiu S. GoPINATHSEW .A. K. Gv~raSHRI J. SUN GVPTASNICI P. J . JAOUSDa A. K. CkrATmER&ICEA&mm%)JC,INT DIREOTOR STANI~ARDS B & 5 )/CB-I

India Cements Limited, MadrasHyderaba d Indust ries Limited, Hyrler~badNational Buildings Organizat ion, New DelhiAssociated Cement Companies Ltd, BombayResearch. Designs and Stan dards Organization ( Ministryof Railwavs ), Luckn ow

JIXX~T F;TOB STANDARDS ( B & S )/CB-IISRXi N. G. Jovar Indian Hum e Pipes Company Limited, Bombayi 2


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IS 4031 Part 14 : 1989Representing

Roads Wing ( Ministry of Tran sport ), Depart ment ofSurface Transport, New DelhiMsmbsrs

Sang R. L. KAPO~~SHRI R. K. SAXENA (A&rmats)

SHRI G. K. MAJUMDARSHRI P. N. MWWA

SHRI S. K. MATHUR ( Alternate )Da A. K. Mnr.~rcrrSHRI NIRMAL SrNon

SERI S. S. MI~LANI ( Altercate )&XIII S. N. PALSHRI BIMAN Dasau~T A ( Ahrnatr )SHIU R. C. PABATEIT-COL R. K. SlN QR ( All6rn at 6)rzLn= ss.-a. PASRICEASHRI Y. R. P EULL

SRRI M. R. CHATTEKJEE ( Alternats)DR MOHAN RAIDR S. S. REHsI (Alte rnate )SHRI A. V. RL ~AN~Da K. C. NABANQ ( A&mat6 )SEIU T. N. SUB~A RAOSnsr S. A. REDDI ( Alt6raa t6)DR M. RAYAIAIIDR A. G. MA~HAVA RAO ( Altrrnats )Sanr G. RANDASSHRI A. U. RIJHSIN~HANISNRIC. S. SHARMA (Altsrnuts)SEORETARYSHRI K. R. S AXENA ( Ahnat )SUPEHINTENDINQ ENQINEER ( DRSIQNB )EXRXXIT IVE ENC~INEER ( SMD DrvrsroN ) ( Alterncte )

Sam I,. SWAROOP&RI H. B~WTTAUIIARYA ( Ahrnatc )Smtr S. K. GUIIA THAKU~TASERI S. P. SANXARNARAYANAN ( Alternate)DR H. C. VISVESVARAYASERI D. C. CHATURVEDI ( &ferna tcr )SHRI G. Raman,Director ( Civ Engg )

Hospital Services Consultancy Corpora tion (India ) Ltd,New DelhiGeological Sur vey of India , Calcutt aNat ional Council for Cement a nd Building Materials,New DelhiDevelopment Commissioner for Cement( Ministry of Indust ry ) Industry,

M. N. Dastur and CompanyPrivate Limited, CalcuttazEngineer-in-Chiefs Bran ch, Army Headqluar tersHindust an Prefab Limited, N ew DelhiIndian Roads Congress, N ew Deihi; aad Centra l RoadResearch Institu te ( CSIR ), New DelhiCentra l Road Research Institu te ( CSIR ), New DelhiCentr al Bu ilding Research Institu te ( CSIR ), RoorkeeDalmia Cement ( Bhara t ) Limited, New DelhiGamm on India Limited, BombayStru ctural Engineer ing Research Centr e ( CSIR ), MadrasDirectorate Genera l of Supplies and Disposals, New DelhiCement Corporation of India, New DelhiCentra l Board of Irrigat ion and Power, New DelhiPublic Works Depart ment , Governm ent of Tamil NaduOrissa Gement Limited, T& W DelhiGan non Dunker ley & Company Ltd, BombayInstitu tion of Engineers ! India ), CalcuttaDirector General, BlrS ( Ex-pBicio &mber )

S6C6t UYySHRI N. C. BANDYOPADHYAY

Joint Director ( Civ Engg ), BIS

Cement, Pozzolana and Cement Additives Subcommittee, BDC 2 : 1Canv6nn

Dsr H. C. VISVI~WABAYA Nat ional Council for Cement a nd Buiiding Materials,New Delhi

DR A. K. MULLI~E :DR ( S~E~ MATI) S. LAXW J (Al&m&s to Dr H. C.SHBI S. K. BANERJEESERI N. G. BASAKSHRI T. MADNE~KWAR ( Al&nut6 )Sam SOXNATH BANEBJEPCHIEB ENQINEER ( RESIWBOH-WY-DXRBCTO~ )

RESEAWJH OFFICER ( CT ) ( Akwnatr )SHRI N. B. DEEAISRIU J. K. IaTRL ( /I&cmate )DIRIWTOHRESEARCH OFFICIXR ( Ahernuf6 jDIHEWOR (C Sr-MDD II)DEPUTY DIRIXXOR ( C & MDD II ) ( Alfcrnafc )SHRI R. K. GATTAWISHRI R. K . VAISHNAVI ( Allrrnafr )Snnx J. SEN GUPTA- _ _ _SaRI I. J. J Aous Nat ional Buidings Organizat ion, New DelhiAssociated Crmenr Companies Ltd, BombayDn A. K. CHATTEI~JEP, ( Alfanald?JOINT DIRE?FOP, STANDARDS (B & 5 )/CB-IJOINT DIRECTOX, STANDARDS ( B & S )/CB-II ( Altrma tr I

Research, Designs and Stan dards Organizat ion, Lu..kno?;

Visvesvaraya )Nat ional Test House, CalcuttaDirectorate Genera l of Technical Developmmt , New DelhiCement Manu facturers Association, BombayIrrigat ion Depart ment , Governmen t of Pun jabGujarat Engineering Research Institute, Vadok*araMaharashtra Engineering Research Institute, NasikCentra l Water Commission, New DeIhiShree Digvijay Cement Company Ltd, Bombay

3


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I6 4031 Part 14) : 1989Members

SHBI R. L. KAPOOBS-1 R. K. DATTA ( Altm&)SHRI W. N. KABODESERIR. KUNJITHAPATTAXSHBIG.K. MAJUMDAB

RefmssntingRoads Wing ( Minis try of Transport ), Department ofSurface Transport, New Delh iHindustan Construction Company Ltd, BombayChettinad Cement Corporation Ltd, Paliyur, T amil NaduHospital Services Consulting Corporation ( India ) Ltd,New DelhiCentral Warehousing Corporation, New Delh iDevelopment Commissioner for Cement I ndustry ( Minis tryof Industry )

-RBI Y. R. P RULLSERI M. R. CHATTERJ EE (A&cm& ) Central R oad R esearch Insti tute ( CYIR ), New DelhiSass A. V. RAMANADn K. C. NARANO ( Altmat~ ) Dalmia Cement ( Bharat ) Ltd, New Del hiCOL V. K. RAOSH BI N. S. GALANDE ( Altrrnats ) Engineer-in-Chiefs Branch, Army HPnduuartersSHBI S. A. REDDI Gammon India Ltd, BombayDR S. S. RBHSIDR IREHAD MA~JOOD (Altnnate) Central Building Research Insti tute ( CSIR ), RoorkeeSriaxA. U. RIJESI~~HANI Cement Corporation of India Ltd, New Del hiSnur M. P. Suvost Federation of Mini Cement Plants, New DelhiSUPEBINTENDINO ENQINICEB (D) Public Wor ks Depar tment, Government of Tamil NaduSENIOB DEPUTY CHIEP ENQINE~&B GENEBA?, ) ( Altsrnots )SHBIL. SWAROOP Or issa Cement Ltd, New DelhiSEBI H. BEATTACEABYA ( Altmatr )Soar V. M. WAD Bhilai S teel Plant , Bhilai

4


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Stondsrd MarkThe use of the Standard Mark is governed by the provisions of the Bureau of Zndth StandardsAct, 1986 and the Rules and Regulations made thereunder. The Standard Mark on productscovered by an Indian Standard conveys the assurance that they have been produced to comply with

the requirements of that standard under a well defined system of inspection, testing and qualitycontrol which is devised and supervised b y BIS and operated by the producer. Standard markedproducts are also continuously checked by BIS for conformity to that standard as a further safe-guard. TIetail s of conditions under which a licence for the use of the Standard Mark may be grantedto manufacturers or producers may be obtained from the Bureau of Indian Standards.


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Bureau o f I n d i a n S t a n d a r d aBIS is a statutory institution established undep the Burmu of Indian Standiards Act, 1986 to promoteharmonious development of the activities of standardization, marking and quality certificationof goods and attending to connected matters in the country.CopyrightBIS has the copyright of all its publications. No part of these publications may be reproduced inany form without the prior permission in writing of BIS. This does not preclude the f ree use, inthe course of implementing the standard, of necessary details, such as symbols and sizes, type orgrade designations. Enquiries relating to copyright be addressed to the Director ( Publications ),BIS.Revision of Indian StandardsIndian S tandards are reviewed periodically and revised, when necessary and amendments, if any,are issued from time to time. Users of Indian Standards should ascertain that they are inpossession of the latest amendmehts or edition. Comments on this Indian Standard may be sentto BIS giving the following reference:Dot : No. BDC 2 ( 4620 )

Amendments Issued Since PublicationAmend No. Date of Issue Text Affected

BUREAU OF INDIAN STANDARDSHeadquarters :Manak Bhavan, 9 Bahadur Shah Zafar Marg, New Delhi 110002Telephones : 331 01 31, 331 13 75 Telegrams : Manaksanstha

( Common to all Offices )Regional Offices :Central : Manak Bhavan, 9 Bahadur Shah Zafar Marg

NEW DELHI 110002Eastern : l/14 C. I. Ti Scheme VII M, V. I. P. Road, ManiktolaCALCUTTA 700054

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Is 4031 (Part-14) Method of Physical Tests for Hydraulic Cem