Table 7.

The different proportions of the traditional soil–cement (TSC) materials and the soil–cement–FGD gypsum (SCF) materials corresponding to given USC values.

Process	Target USC	w/c	w/(c + g)	OMC	Cement Content	FGD Gypsum Content
	(ksc)			(% by dry weight soil)
TSC	20 *	10.5	-	12	1.14	-
SCF		-	9.6		1	0.25
TSC	30 *	3.8	-		3.16	-
SCF		-	4.7		2	0.55
TSC	32.6	2 *	-		6	-
SCF	35.7	-	2 *		3	3

Note: the star symbol (*) is used to define (1) target USC or (2) target w/c and w/(c + g) ratio.