Abstract
When a geotextile as filter is set in a ground for drainage, a decreasing of cross-plane flow performance of geotextile is expected due to a clogging associated with a intrusion and capture of soil particle. The objective of this paper is to consider a suitable geotextile filter to be hard to arise a clogging for fine-grained soils at a field site. This study was performed to focusing on a change of coefficient of permeability normal to plane on a kind of geotextile filter. A series of constant head permeability test on various geotextile filter was performed sandwiching in a geotextile filter between fine-grained geomaterial and gravel layer. This paper is discussed on a test method for an evaluation of the clogging property of getxtile filter, apparent opening size tests of geotextile and clogging properties of geotextile filters based on test resultes of a series of constant head permeability test on various geotextile filter.
