Reducing Compressibility of the Expansive Soil by Microbiological-Induced Calcium Carbonate Precipitation

Table 2

Chemical composition of the expansive soil.

Si^4+ (%)	Al^3+ (%)	Fe^3+ (%)	K^+ (%)	Mg^2+ (%)	Ca^2+ (%)	Ti^4+ (%)	Cu^2+ (%)	S^2+ (%)	Mn^2+ (%)
23.5	57.6	8.9	4.2	2.3	1.6	0.9	0.7	0.2	0.1