Field-Obtained Soil-Water Characteristic Curves of KPK Expansive Soil and Their Prediction Correlations

Table 1

Physical and swelling properties of the investigated soil.

Sample designation	Depths (ft)	Physical properties				Atterberg’s limits (%)				USCS
		γdmax kN/m³	OMC % age		FSI (%)
Site A	0–2	16.2	18.2	2.61	32.5	55	21	34	6	CH
	2–4	17.6	17.5	2.62	33.3	52	18	34	8
	4–6	18.0	19.0	2.60	34.0	60	22	38	10
Site B	0–2	17.0	16.0	2.64	32.4	58	19	39	10	CH
	2–4	18.2	18.0	2.62	33.0	61	23	38	13
	4–6	19.0	15.8	2.62	32.8	59	22	38	12
Site C	0–2	16.0	17.8	2.59	29.0	47	25	22	8	CL
	2–4	17.5	19.0	2.58	28.5	45	22	23	8.5
	4–6	18.3	16.4	2.63	29.5	44	22	22	9