The Compressibility and Swell of Mixtures for Sand-Clay Liners

Table 7

Summary of swell and compression data for Form C clay.

Clay content	Mixture form	Compression index Cc	Swell index Cs	Void ratio	Swell %	Swell pressure (kPa)	Dry density kN/m^3	m.c. %
5% (S2 -a)	Form C	0.0275	—	0.5167	0.92	60	17.5	0
5% (S2 -b)	Form C	0.0347	0.0141	0.4925	0.24	8	17.8	11
10% (S4 - a)	Form C	0.0438	—	0.5198	1.91	100	17.5	0
10% (S4 - b)	Form C	0.0392	0.0114	0.4620	2.26	25	18.2	11
15% (S6 - a)	Form C	0.0721	—	0.5198	4.48	180	17.5	0
15% (S6 - b)	Form C	0.0352	0.0219	0.4706	4.09	60	18.1	13
20% (S8 -a)	Form C	0.0718	0.0274	0.4417	10.80	150	18.5	13
20% (S8 -b)	Form C	0.0573	0.0209	0.4490	18.15	150	18.5	13
25% (S10 -a)	Form C	0.0666	0.0127	0.4739	13.19	170	18.1	17
25% (S10 -b)	Form C	0.0605	0.0206	0.4773	16.56	170	18.1	17
30% (S12 -a)	Form C	0.1370	0.0302	0.5569	34.74	200	17.7	16
30% (S12 -b)	Form C	0.0870	0.0249	0.5523	28.11	200	17.7	16