Experiment on Improving Bearing Capacity of Pile Foundation in Loess Area by Postgrouting

Table 1

Geological data.

Soil	Thickness (m)	Gravity (kg/m^3)	Water content (%)	Saturation (%)	Liquid limit (%)	Liquidity index	Cohesion (kPa)	Internal friction angle (°)	Allowable bearing capacity (kPa)
Mild clay	7.5	1310	10.3	32	29.3	1.07	25.1	23	125
Silty clay	2.0	1440	12.1	50	29.5	0.87	31.5	21	125
Clay	9.4	1490	12.4	48	24.5	1.29	41.0	26	120
Mild clay	10.6	1540	13.5	52	28.8	1.27	38.9	23	132
Medium sand	12.0	1700	14.2	78	27.8	1.07	35	25	143
Medium coarse sand	14.0	2380	15.0	84	31.3	0.42	35	24	212