Question

Coarse aggregates which has been used in this is of __________

(a) 10 mm

(b) 20 mm

(c) 15 mm

(d) 25 mm

I got this question in an interview.

I'd like to ask this question from No Fines Concrete, High Density Concrete topic in section Special Concrete and Concreting Methods of Concrete Technology

Answer 1

Right answer is (a) 10 mm

For explanation I would say: Normally coarse aggregates passing from 20 mm sieve and retained on 10 mm sieve which is further used for this type of concrete.