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GCE Kannur 11 Tests Convention al aggregate Coconut shell aggregate Sand Max size 20 16 4.75 Specific gravity 2.82 1.29 1.1 Bulk density(kg/l) 1.51 0.681 Void ratio 0.866 0.894 Porosity (%) 46.4 47.2 Aggregate abrasion value 27 4.66 - Impact value of aggregate (%) 21.114 5.51 - Aggregate crushing value (%) 2.6 5.28 - Fineness modulus 0.915 1 ...