Table 5.

Compression index under different dosage.

Parameter	Vertical pressure p/kPa	0%	10%	20%	30%	40%	50%
Void ratio ei	50	0.7007	0.6463	0.5921	0.5399	0.4690	0.4131
	100	0.6887	0.6364	0.5842	0.5330	0.4630	0.4081
	200	0.6797	0.6295	0.5789	0.5289	0.4599	0.4055
	300	0.6724	0.6239	0.5742	0.5252	0.4567	0.4029
	400	0.6685	0.6210	0.5718	0.5233	0.4550	0.4016
Compression factor av/MPa–1	50	0.3349	0.2572	0.2164	0.1859	0.1595	0.1392
	100	0.2404	0.1991	0.1587	0.1394	0.1196	0.0994
	200	0.0902	0.0689	0.0529	0.0403	0.0318	0.0263
	300	0.0730	0.0556	0.0465	0.0372	0.0318	0.0263
	400	0.0386	0.0290	0.0240	0.0194	0.0170	0.0128
Compression modulus Es/MPa	50	5.0782	6.4016	7.3574	8.2833	9.2093	10.1541
	100	7.0232	8.2188	9.9828	10.9944	12.2290	14.1657
	200	18.6286	23.6651	29.8485	37.9577	45.9721	53.5000
	300	22.9118	29.2164	33.8655	41.0208	45.8721	53.4000
	400	43.1778	55.8286	65.3733	78.6600	85.6609	109.6667