Question

Which of the following pavement can be used, for construction on black cotton soils?

(a) Flexible pavement

(b) Semi-flexible pavement

(c) Rigid pavement

(d) All of the mentioned

I got this question in class test.

My doubt stems from Flexible Pavement Design topic in chapter Design of Flexible & Rigid Pavement of Geotechnical Engineering II

Answer 1

The correct option is (c) Rigid pavement

To explain I would say: The rigid pavements are used for heavier loads and can be constructed over relatively poor sub-grade such as black cotton or plastic soils, peat etc.