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Building Materials

Q1: Minimum required water cement ratio for a workable concrete, is

A 0.30

B 0.40

C 0.50

D 0.60

E 1.0.

ANS:B - 0.40

In concrete, for chemical reaction 0.23% water content is required & 0.15% water content required for evaporation loss.

Therefore 0.23 + 0.15 = 0.38 => 0.40.



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