Civil Engineering MCQAE Level Civil Engineering
The Aggregate Impact Value (AIV) test determines:
Transportation EngineeringAggregate Impact ValueMEDIUM
Choose the correct answer
A
Resistance of aggregate to abrasion
B
Toughness (resistance of aggregate to sudden impact)
C
Water absorption of aggregate
D
Flakiness of aggregate
Correct Answer
B. Toughness (resistance of aggregate to sudden impact)
Why is this the answer?
AIV (IS 2386 Part 4): sample of aggregate is subjected to 15 blows of a standard hammer. AIV = (weight of fines passing 2.36 mm sieve / total weight) x 100%. AIV < 10%: exceptionally strong; 10-20%: strong; 20-30%: satisfactory; > 35%: weak.
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