The effect of pore size deformation on multi-pore model of woven geotextiles in tension test

Abstract

The filtration performance of woven geotextiles is a constant issue in water proof and flood prevention site. Woven geotextiles have been characterized by a two-dimensional single-pore model and linear change laws of characteristic pore size and percent open area (POA) with increasing of tensile strain have been applied by people before. However, percent open area (POA) which is decided by the ratio of pores area and geotextiles area is proved to be non-linear as tensile strain increases. In this paper, change laws of percent open area (POA) and characteristic pore size in uniaxial tension test are explored by using imagine analysis. Considering the effect of “pore size deformation coefficient” and “textile shrinkage coefficient”, “multi-pore model” of woven geotextiles is come up with in this paper in order to improve change laws of percent open area (POA) and characteristic pore size in uniaxial tension test.