An Improved Prediction Method of Soil-Water Characteristic Curve by Geometrical Derivation and Empirical Equation

Table 5

Results of the filter paper method.

Sand			Silt			Clay
Water content of filter paper (%)	Water content of soil (%)	Suction (kPa)	Water content of filter paper (%)	Water content of soil (%)	Suction (kPa)	Water content of filter paper (%)	Water content of soil (%)	Suction (kPa)
11.851	0.005	14042.388	23.917	0.014	2164.499	8.869	0.005	22288.953
23.674	0.009	2247.753	24.988	0.014	1833.610	12.623	0.009	12458.153
28.523	0.018	1060.181	28.558	0.030	1054.535	24.301	0.021	2039.631
38.268	0.035	234.182	35.968	0.058	334.448	30.290	0.043	806.218
46.567	0.052	64.722	41.279	0.089	146.865	35.422	0.085	363.979
58.214	0.070	37.661	46.860	0.118	61.851	40.870	0.128	156.466
74.665	0.088	15.818	52.807	0.147	50.087	48.520	0.172	62.789
87.594	0.106	8.000	58.404	0.177	37.287	55.947	0.215	42.443
101.226	0.115	3.899	66.698	0.206	24.078	63.047	0.258	29.190
116.186	0.128	1.771	74.722	0.239	15.771	72.785	0.300	17.467
126.357	0.142	1.036	75.993	0.254	14.749	76.154	0.322	14.624
142.341	0.150	0.446	86.114	0.269	8.650	99.900	0.343	4.181
155.374	0.160	0.224	135.265	0.280	0.648	187.996	0.427	0.040
			145.300	0.295	0.382