Question

The ________ can be adopted as an aid in construction to stop rock movements and to increase the permeability of the strata as in the case of oil wells.

(a) Chemical grouting

(b) Cement grouting

(c) Pumping

(d) Well Point System

I got this question during an interview.

My question comes from Deep Excavations topic in section Deep Excavations, Pile Foundations and Caisson of Construction & Building Materials

Answer 1

Correct choice is (a) Chemical grouting

To explain I would say: As the chemical grouting has been developed recently, the precise information of its long-term after effects is not available. Hence it has yet not become an established technique as the conventional grouting.