Laboratory Tests

Everything you should know about the Aggregate Impact Value (AIV)

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Designation (Number): B.S. 812: Part 112: 1990. Scope: -Testing coarse aggregates for resistance to Impact Aggregates: -combination of sand, gravel, crushed stone, or other material of mineral composition-Natural aggregates taken from quarries (natural deposits)-Manufactured aggregates include blast furnace slag, clay and slate etc.  Aggregate Classification (ASTM C125)  Fine Aggregates are defined as aggregates passing no. … Read more

lab manual for SOM

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Strength Laboratory deals with the strength testing of structural materials. While designing any structure, one of the most important concerns of design engineer is to determine the strength of any material that has to be used in the construction of relevant structure. The material should be strong enough to carry load for which the subject … Read more

California Bearing Ratio (CBR) for determining Shear Strength of subgrade

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California Bearing Ratio (CBR) test is a compressive nature penetration test. It was originally developed by Caltrans i.e. California Department of Transportation after World War II i.e. in the late 1930s.  The test is specifically used to determine the mechanical strength as well as the potential strength of road subgrades and basecourses materials including the … Read more