Sand- and Clay-Photocured-Geomembrane Interface Shear Characteristics Using Direct Shear Test

It is well known that geomembranes frequently and easily fail at the seams, which has been a ubiquitous problem in various applications. To avoid failure of geomembrane photocuring was carried out with 1~5% photoinitiator 2% carbon black powder. This can be sprayed cured on soil surface. The obtained then used as barrier, separator, or reinforcement. In this study, direct shear tests were aim to investigate interfacial characteristics photocured geomembrane–clay/sand. results show significant effect impermeable layer for geomembrane–clay interface. As geomembrane–sand interface, it reasonable choose made from 4% boundary drainage landfill. cover system, 5% geomembrane. Moreover, interface between photocurable clay/sand, friction coefficient increases initially decreases afterward increase normal stress. Furthermore, angle sand larger than other words, better tensile crack resistance.