Question

As compared to conventional concrete, the ________ of no fines concrete is relatively low.

(a) Swelling due to absorption

(b) Drying shrinkage

(c) Capillary action

(d) Water transmission

I had been asked this question during a job interview.

Enquiry is from Different Types of Concrete in section Cement Concrete Construction of Construction & Building Materials

Answer 1

The correct answer is:

(b) Drying shrinkage

No-fines concrete generally has relatively low drying shrinkage compared to conventional concrete. This is because the absence of fine aggregates reduces the shrinkage typically caused by drying, as there is less surface area for moisture loss and contraction.