The load penetration curve of CBR test may need origin correction due to the non-vertical penetrating plunger of the loading machine.
The toughness and hardness of road aggregates are determined by Los Angeles abrasion test and aggregate impact test, respectively.
Grading of normal (unmodified) bitumen binders is done based on viscosity test results.
In compacted bituminous mix, Voids in the Mineral Aggregate (VMA) is equal to the sum of total volume of air voids (Vv) and total volume of bitumen (Vb).
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The Correct Option isA, C, D
Solution and Explanation
The correct option is (A) : The load penetration curve of CBR test may need origin correction due to the non-vertical penetrating plunger of the loading machine, (C) : Grading of normal (unmodified) bitumen binders is done based on viscosity test results and (D) : In compacted bituminous mix, Voids in the Mineral Aggregate (VMA) is equal to the sum of total volume of air voids (Vv) and total volume of bitumen (Vb).