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The mineral oil if present in mixing for concrete ______________(a) Improves strength(b) Reduces strength(c) Gives more slump(d) Gives a smooth surfaceThis question was addressed to me at a job interview.My question comes from Sampling in chapter Concrete Mix Design of Concrete Technology

Answer» RIGHT option is (a) Improves strength

The BEST I can explain: The mineral oil is present in MIXING for concrete INCREASES strength for the concentration up to 2%.


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