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The water enters into chemical action with cement and this action causes ________ and ________ of concrete.(a) Swelling, shrinkage(b) Expansion, contraction(c) Setting, hardening(d) Strong, weakThis question was posed to me in quiz.Question is taken from Cement Concrete Construction topic in division Cement Concrete Construction of Construction & Building Materials

Answer»

Correct answer is (c) SETTING, hardening

Best explanation: The water LUBRICATES the AGGREGATE and it FACILITATES the passage of cement with the voids of aggregates. This mean that water makes the CONCRETE workable.



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