The Influences of Sand Content and Particle Size on the Desiccation Cracks of Compacted Expansive Soil

Table 1

Basic physical properties and mineral composition of clayey soil samples.

Soil properties	Value	Mineral composition	(%)
Undisturbed soil density (g/cm^3)	1.76	Illite	32.89
Undisturbed soil water content (%)	18.5	Kaolinite	9.23
Specific gravity	2.72	Chlorite	7.09
Atterberg limits		Smectite	6.61
Liquid limit (%)	52	Quartz	29.63
Plastic limit (%)	25	Else	14.55
Plasticity index	26.5
Particle size analysis
Sand (%)	0
Silt (%)	55.2
Clay (%)	44.8
Free swelling ratio (%)	65.5