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

Table 6

CBR and CBR swell data for CCA-treated sample.

% of CCA	% CBR swelling	Penetration (mm)	CBR (%)	Max CBR (%)	ERA requirement	Remark
0	4.11	2.54	2.62	2.62	>3%	Poor
		5.08	2.45
2	2.79	2.54	2.87	2.94		Poor
		5.08	2.94
4	3.08	2.54	3.31	3.31		Satisfied
		5.08	2.99
6	3.52	2.54	3.12	3.12		Satisfied
		5.08	2.91
8	3.96	2.54	2.80	3.01		Satisfied
		5.08	3.01