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Plastic shrinkage cracking occurs in ________ hours after placing.

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Plastic shrinkage cracking occurs in ________ hours after placing.

(a) .5

(b) 24

(c) 10

(d) 5

The question was asked in semester exam.

I'd like to ask this question from Cracking of Concrete, Evaluation of Cracks topic in section Repair Technology for Concrete Structures of Concrete Technology

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Correct answer is (d) 5

Easy explanation: Plastic shrinkage concrete occurs within 1 hours and 8 hours after placing, when subjected to a very rapid loss of moisture.

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