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As no-fines concrete has little or no ___________ in the fresh state, it requires long time for the removal of forms.

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As no-fines concrete has little or no ___________ in the fresh state, it requires long time for the removal of forms.

(a) Adhesion

(b) Cohesion

(c) Shrinkage

(d) Swelling

The question was posed to me in an online interview.

The question is from Different Types of Concrete in chapter Cement Concrete Construction of Construction & Building Materials

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Correct choice is (b) Cohesion

Explanation: No-fines concrete is highly permeable as compared to conventional concrete and hence the rendering of walls become essential. However, in certain cases, such as the drainage layer in the soils, the advantage of quality of high permeability of no fines concrete can be taken.

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