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Suitability Properties

4 - Suitability Properties of Aggregate

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Page 1: 4 - Suitability Properties of Aggregate

Suitability Properties

Page 2: 4 - Suitability Properties of Aggregate

Hardness(Resistance to Wear)

LA Abrasion TestSource: http://pavementinteractive.org

CIVL 3137 101

Page 3: 4 - Suitability Properties of Aggregate

Hardness(Resistance to Wear)

100%retained

onNo. 12sieve

<100%retained

onNo. 12sieve

Source: http://pavementinteractive.orgCIVL 3137 102

Page 4: 4 - Suitability Properties of Aggregate

Hardness(Resistance to Wear)

original final

original

M M% loss 100%

M

(Elapsed Time = 15 minutes)CIVL 3137 103

Page 5: 4 - Suitability Properties of Aggregate

Durability(Resistance to Weathering)

Resistance to Wetting/Drying

Resistance to Freezing/Thawing

Resistance to Heating/Cooling

CIVL 3137 105

Page 6: 4 - Suitability Properties of Aggregate

Soundness Test(Resistance to Weathering)

MgSO4 Na2SO4

Source: http://pavementinteractive.org

CIVL 3137 106

Page 7: 4 - Suitability Properties of Aggregate

Soundness Test(Resistance to Weathering)

Coarse aggregate samplebefore testing

Same sample after 5 cyclesof soaking and drying

Source: http://pavementinteractive.orgCIVL 3137 107

Page 8: 4 - Suitability Properties of Aggregate

Soundness Test(Resistance to Weathering)

original final

original

M M% loss 100%

M

(Elapsed Time = 5 days)CIVL 3137 108

Page 9: 4 - Suitability Properties of Aggregate

Particle Shape(Flat and Elongated Particles)

Source: http://pavementinteractive.orgCIVL 3137 110

Page 10: 4 - Suitability Properties of Aggregate

CIVL 3137 111

Elongated Aggregate

Page 11: 4 - Suitability Properties of Aggregate

CIVL 3137 112

Proportional Caliper Device

Page 12: 4 - Suitability Properties of Aggregate

Particle Shape(Flat and Elongated Particles)

Source: http://pavementinteractive.orgCIVL 3137 114

Page 13: 4 - Suitability Properties of Aggregate

Particle Shape(Coarse Aggregate Angularity)

Source: http://pavementinteractive.org

Fractured Face

Fractured Faces

Fractured Faces

CIVL 3137 115

Page 14: 4 - Suitability Properties of Aggregate

Particle Shape(Fine Aggregate Angularity)

Source: http://pavementinteractive.org

voids

cyl

V% Voids 100%

V

sandsand

sand w

mV

RD

voids cyl sandV V V

CIVL 3137 116

Page 15: 4 - Suitability Properties of Aggregate

Clay Content(Sand Equivalent Test)

Source: http://pavementinteractive.org Source: http://pavementinteractive.org

Page 16: 4 - Suitability Properties of Aggregate

Clay Content(Sand Equivalent Test)

sand

clay

HSE 100%

H

Source: http://pavementinteractive.org

sandHclayH