Fig. 4
From: Experimental study on disintegration of unsaturated red clay in Ca2+ solution environment

Disintegration curves of red clay with w = 28% in pure water and Ca2+ solution. (a) Disintegration curves of red clay with w = 28%, e = 1.0 in each solution; (b) disintegration curves of red clay with w = 28%, e = 1.1 in each solutions; (c) disintegration curves of red clay with w = 28%, e = 1.15 in each solution.