초록
Rotational abrasion test was applied to geosynthetics to examine the effects of surface damage type on the abrasion resistance using different friction brush type and sandpaper particle size. In this study, the effects of friction brush type and sandpaper particle size on abrasion resistance were investigated. Surface damage of geosynthetics by rotational abrasion test was interpreted based on the phenomenological results. Abrasion resistance of geosynthetics was examined through tensile strength changes before and after abrasion test. Nonwoven geotextiles showed severe surface damage with type B and C brushes. Geogrid and geomembrane showed slight surface damage by type A brush but was fractured by type B and C brush. When sandpaper was used, nonwoven geotextiles showed more severe surface damage than woven geotextile. Tensile strength changes of all geosynthetics were closely related to the surface damage after rotational abrasion test.
