Correct option is D
Aggregate Impact Value:
The impact value of aggregates is defined as the ability of aggregates that resist sudden impact or shock load on it. Also, it can be defined as the resistance of aggregate to failure by impact load is known as the Impact Value of Aggregate.
The aggregate impact value shall not exceed 45 percent by weight for aggregates used for concrete other than for wearing surfaces and 30 percent by weight for concrete for wearing surfaces, such as runways, roads, and pavements.
Aggregate Impact Test:
The aggregate impact test is used to evaluate the toughness of aggregates, the toughness of aggregate means the resistance to fracture from impact load or sudden dynamic load.
