alleryStart learning →Per §2.2.11, the soundness test on aggregates is described as:
ANot reliable; used to accept but not reject
BReliable for rejecting suspect aggregates
CHighly reliable for both accept and reject
DReplaced entirely by the abrasion test
Answer & Solution
Correct answer: A. Not reliable; used to accept but not reject
1. §2.2.11 concludes the test description with: 'However, an important point to note is that the soundness test is not reliable and hence it might be used to accept aggregates but not to reject them.'
2. The 10-cycle loss limits are 12 percent (sodium sulphate) and 18 percent (magnesium sulphate) per the same paragraph.
_Source: IGNOU ET-522 Block-1 Unit-2 Aggregates, §2.2.11, p. 24_
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