2016 Volume 31 Pages 149-
A series of water retention tests were carried out for seven nonwoven geotextiles in different materials and processes of manufacture. The van Genuchten model was applied to the water retention curve obtained from the above-mentioned test and published data. Estimation of the water retention curve using the saturated hydraulic conductivity of nonwoven geotextile was examined. Main conclusions are as follows. The water retention curves in drainage phase of nonwoven geotextiles are S-shaped curve just like that of soil materials. And the curves of nonwoven geotextiles can be estimated by the van Genuchten model. By carrying out only the permeability test of saturated nonwoven geotextiles, it is suggested that the water retention curve in drainage phase can be estimated.
