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Per §7.3, the determination of compressive strength is preferred as the primary test because:
A{'text': 'It directly gives the flexural strength too', 'label': 'A'}
B{'text': 'It is the quickest and easiest test to perform', 'label': 'B'}
C{'text': 'It is the only failure mode in real structures', 'label': 'C'}
D{'text': 'It avoids any need for curing of the sample', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'It is the quickest and easiest test to perform', 'label': 'B'}
1. §7.3 reads: 'Of the various strengths of concrete the determination of compressive strength is very quick and easy. Hence it is customary to determine other strengths like flexural strength, tensile strength etc. from compressive strength through some empirical relation.'
2. Flexural-to-compressive ratios are given in Table 7.3 and CRRI relations (Eq. 7.9-7.12).
_Source: IGNOU ET-522 Block-2 Unit-7 Strength of Concrete, §7.3, p. 52_
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