Building Materials

Q1: Pick up the correct statement regarding low heat cement from the following:

A It possesses less compressive strength

B Its initial setting time is about one hour

C Its final setting time is about 10 hours

D Its mainly used for mass concrete work

E All the above.

ANS:E - All the above.

Low heat cement generates low heat of hydration but the total heat generated is the same as the normal cement. We use low heat cement in mass concreting to avoid temperature stress in the internal zone and cracking. It does not affect the strength of concrete. Because strength depends on mix design we use and cement is one of the ingredients of concrete. Cement is not only the one who gives the strength in concrete. Initial and Final setting time is normal.



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