alleryStart learning →Per §2.3.2(iii), in the Aggregate Impact Value test the standard hammer falls from a height of approximately:
AAbout 150 mm
BAbout 250 mm
CAbout 600 mm
DAbout 380 mm
Answer & Solution
Correct answer: D. About 380 mm
1. §2.3.2(iii): the sample (passing 12.5 mm, retained on 10 mm) is 'subjected to 15 blows of a standard hammer falling from height of 380 mm.'
2. The sample is then sieved through 2.36 mm and AIV = (B/A) × 100.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.3.2(iii), p. 37_
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