If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________(a) Impair(b) Aid(c) Improve(d) ExtendI had been asked this question in unit test.Enquiry is from Factors Affecting PIC, Cold Weather Concreting in section Special Concrete and Concreting Methods of Concrete Technology

If concrete is exposed to repeated freezing and thawing after the fina

1.	If concrete is exposed to repeated freezing and thawing after the final set, the final qualities of the concrete may also be __________(a) Impair(b) Aid(c) Improve(d) ExtendI had been asked this question in unit test.Enquiry is from Factors Affecting PIC, Cold Weather Concreting in section Special Concrete and Concreting Methods of Concrete Technology
Answer» Correct answer is (a) Impair For EXPLANATION: If concrete is exposed to repeated freezing and thawing after the FINAL set and during the hardening period, the final qualities of the concrete may ALSO be impaired.

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