Abstract
In the construction of embankment with high water content cohesive soil using non-woven geotextile as horizontal drainage, transmissivity of the geotextile has important function. The transmissivity decreases by various effects, especially, the effect of clogging by which geotextile catches soil particles can be serious. In this study, in order to investigate the above effect, we made 4 kinds of geotextile 5 different levels of clogging condition respectively, and carried out transmissivity test for the clogged 20 samples. As results, it was cleared that transmissivity of clogged geotextile decreased with increasing of confining stress exponentially in spite of clogging condition. Besides, it was cleared that geotextile whose density was looser performed higher transmissivity in no using condition, however transmissivity of the geotextile decreased easier with progressing of clogging.
