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Per §5.3.1, the SINGLE most important factor governing the workability of fresh concrete is:
A{'text': 'The compressive strength target', 'label': 'A'}
B{'text': 'The water content of the mix', 'label': 'B'}
C{'text': 'The age of the cement bag used', 'label': 'C'}
D{'text': 'The colour of the coarse aggregate', 'label': 'D'}
Answer & Solution
Correct answer: B. {'text': 'The water content of the mix', 'label': 'B'}
1. §5.3.1 opens: 'The single most important factor which governs the workability is the water content.'
2. The same paragraph warns that arbitrarily adding water reduces strength and may cause segregation and bleeding; if more water is added, a proportional cement increase is needed to keep w/c constant.
_Source: IGNOU ET-522 Block-2 Unit-5 Workability & Fresh Concrete-I, §5.3.1, p. 6_
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