Question

In one-dimensional consolidation, secondary consolidation is __________

(a) considered at the start of test

(b) considered at the middle of test

(c) considered at the end of test

(d) disregarded

The question was posed to me during an internship interview.

This key question is from Stress Distribution topic in division Stress Distribution of Geotechnical Engineering I

Answer 1

Correct option is (d) disregarded

Easiest explanation: Since in Terzaghi’s Theory of one dimensional consolidation, the time lag in consolidation is due entirely to permeability of soil, there is very slow drainage of water that leads to neglecting of the secondary consolidation.