Question

Aggregate has therefore a direct effect on the long-term deformations of concrete because __________

(a) Low elastic modulus aggregate will produce a stiffer concrete that will have relatively higher resistance to deformation

(b) High elastic modulus aggregate will produce a stiffer concrete that will have relatively higher resistance to deformation

(c) High elastic modulus aggregate will produce a stiffer concrete that will have relatively lower resistance to deformation

(d) Low elastic modulus aggregate will produce a stiffer concrete that will have relatively lower resistance to deformation

The question was posed to me during an interview.

My query is from Creep topic in section Elasticity, Creep and Shrinkage of Concrete Technology

Answer 1

Correct answer is (b) High elastic modulus aggregate will produce a stiffer concrete that will have relatively higher resistance to deformation

Best explanation: Aggregate has therefore a direct effect on the long-term deformations of concrete because a high elastic modulus aggregate will produce a stiffer concrete that will have relatively higher resistance to deformation.