As per IS 4031 : 1988, the heat of hydration of low-heat Portland cement for 7 days should not be more than _______ calories per gram.
A
90
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B
100
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C
65
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D
120
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Solution
The correct option is C 65 As per IS 4031 : 1988, the heat of hydration of low-heat Portland cement for 7 days should not be more than 65 calories per gram. The heat of hydration should not be more than 272 and 314 J/gm at the end of 7 and 28 days.