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Which of the following are the disadvantages of this concrete?

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Which of the following are the disadvantages of this concrete?

(a) Lightweight

(b) Low strength

(c) Low shrinkage

(d) Good thermal insulating property

This question was addressed to me in homework.

This key question is from No Fines Concrete, High Density Concrete topic in portion Special Concrete and Concreting Methods of Concrete Technology

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Right answer is (b) Low strength

The best explanation: The main disadvantage of this concrete is that it has very low strength as compared to ordinary Portland cement.

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