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Question

The rapid hardening Portland cement has a

A
lower heat of hydration and higher shrinkage coefficient
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B
lower heat of hydration and lower shrinkage coefficient
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C
higher heat of hydration and higher shrinkage coefficient
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D

higher heat of hydration and lower shrinkage coefficient

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Solution

The correct option is D

higher heat of hydration and lower shrinkage coefficient


Rapid hardening cement as the name indicates it develops strength rapidly and it is also known as High Early Strength Cement. It has a higher proportion of limestone and shale (Clinker), which results in early high strength. It has a high proportion of tricalcium silicate (C3S) which boosts up the strength gain, in early stages due to higher heat of hydration. Shrinkage during curing and hardening of cement is less in case of RHC.

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