Effects of Corn Cob Ash as Partial Replacement of Cement for Stabilization of an Expansive Clay

Table 4

Summary of geotechnical properties of the untreated soil sample.

Parameter	Laboratory result
Percentage of passing through No. 200	92.9%
Liquid limit	96.5%
Plastic limit	39.39%
Plasticity index	57.11%
Linear shrinkage	26%
Soil classification	USCS	CH
	AASHTO	A-7-5
Specific gravity of soil	2.71
Natural moisture content	45.48%
Free swell	83%
Compaction test result	MDD	1.385 g/cm^3
	OMC	36.5%
California bearing ratio (CBR)	2.62%
CBR swell	4.11%