Analysis and Prediction of Stable Height of Capillary Water Rising under Unsaturated Subgrade Soil

Table 1

Classification of the sandy soils.

Soil type		Code name	Content of F (%)	Judgment conditions
Sand	Well-graded sand	SW	F ≤ 5	Cu ≥ 5 and 1≤Cc ≤ 3
	Poorly graded sand	SP		Does not meet the above conditions
Fine-grained sand		SF	5 < F ≤ 15	—
Fine-grained soil sand	Silty sand	SM	15 < F ≤ 50	The fine-grained soil is located below line A of the plasticity chart
	Clayey sand	SC		The fine-grained soil is located on the line A or above the line A of the plasticity chart