Question

________ method is based on the principle that the densest concrete is achieved by proportioning its aggregate in such a manner that the heaviest weight of concrete for same volume is obtained.

(a) Minimum void method

(b) Arbitrary method

(c) Water-cement ratio method

(d) Maximum void method

I have been asked this question in a job interview.

My question is based upon Cement Concrete Construction topic in chapter Cement Concrete Construction of Construction & Building Materials

Answer 1

Right answer is (d) Maximum void method

Best explanation: In Maximum void method, a box is filled with varying proportions of fine and coarse aggregate. The proportion which give the heaviest weight is then adopted. The method of maximum density is not very popular because the grades cannot be accurately achieved.