Civil Engineering MCQJE Level Civil Engineering
The aggregate impact value (AIV) is a measure of the aggregate''s resistance to:
Building MaterialsBuilding MaterialsMEDIUM
Choose the correct answer
A
Weathering
B
Crushing under static load
C
Sudden impact (toughness)
D
Abrasion resistance
Correct Answer
C. Sudden impact (toughness)
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Aggregate Impact Value (IS 2386 Part 4): percentage of fines produced when aggregate is subjected to 15 standard blows from a hammer. It measures toughness (resistance to sudden impact/shock). AIV < 30% for road sub-base, < 10% for wearing course. Lower AIV = tougher aggregate.
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