Home › B.Tech Civil › civilengineering › Water for Concrete › Per §3.3.5, an addition of approximately 0.20 pe…
Per §3.3.5, an addition of approximately 0.20 percent sugar by weight of water in the mix typically results in:
A{'text': 'Reduced 28-day strength after rapid setting', 'label': 'A'}
B{'text': 'No adverse effect at all', 'label': 'B'}
C{'text': 'Higher 28-day strength than control', 'label': 'C'}
D{'text': 'Frost resistance improvement only', 'label': 'D'}
Answer & Solution
Correct answer: A. {'text': 'Reduced 28-day strength after rapid setting', 'label': 'A'}
1. §3.3.5 reads: 'When the quantity of sugar is increased to 0.20 percent by weight of cement, setting is accelerated. When quantity is further increased, rapid setting may result and 28-day strength reduced.'
2. Below 0.05 percent there is no adverse effect; 0.15 percent retards setting and may reduce early strength.
_Source: IGNOU ET-522 Block-1 Unit-3 Water, §3.3.5, pp. 42-43_
Related questions
Per §3.4, sea water typically reduces the 28-day strength of concrete by the order of:Per §3.4, sea water is most strictly to be AVOIDED for use as mixing water in:Per §3.4, sea water has an average salinity of approximately:Per Table 3.2, the recommended pH range of mixing water for concrete is:Per Table 3.2, the tolerable limit on TOTAL DISSOLVED SALTS in mixing water for concrete iPer §3.3.2, which of the following salts in mixing water is described as 'completely destrPer §3.3.1, suspended particles in mixing water do NOT affect the strength of concrete up Per §3.3, the most reliable test for the suitability of a doubtful water for concrete is: