Equipment Required – Impact Testing Machine – Cylindrical Mould (75 mm dia, 50 mm height) – Tamping Rod (10 mm dia, 230 mm long) – IS Sieves (12.5 mm & 10 mm) – Oven & Balance
Aggregate Impact Value (AIV) = (W₂ / W₁) × 100 – W₁ = Total weight of sample ALimits (IS AA2386): – ≤ 30% for wearing course – ≤ 45% for other layers