Consider the following statements:Presence of Na2O and K2O in concrete – McqOptions

MCQOPTIONS

1.	Consider the following statements:Presence of Na2O and K2O in concrete leads to1. expansive reaction in concrete2. cracking of concrete3. disruption of concrete4. shrinkage of concreteWhich of the above statements are correct?
A.	1 and 2 only
B.	2 and 3 only
C.	1, 2 and 3
D.	3 and 4
Answer» D. 3 and 4

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