Question

How is bulking related to moisture content?

(a) Keeps on increasing with moisture content

(b) Increases to a certain point and then decreases

(c) Keeps on decreasing with moisture content

(d) Decreases to a certain point and then increases

This question was posed to me by my school principal while I was bunking the class.

I'd like to ask this question from Bulking of Sand in section Materials for Construction of Basic Civil Engineering

Answer 1

Right choice is (b) Increases to a certain point and then decreases

Explanation: The volume i.e. bulking increases as sand absorbs moisture. At about 6- 10%, the film starts breaking and the volume reduces. If sand absorbs further moisture, no bulking takes place.