초록
Effect of abrasion damage on the chemical resistance of geotextiles were evaluated. Three types of geotextiles were adopted for the abrasion damage test and four types of sandpapers were used to consider the soil particle size. After abrasion damage test, the chemical resistance of damaged geotextile was evaluated by the change of tensile strength of geotextile after immersion in acid solution of pH 3 and 12 at $25^{\circ}C$ or $50^{\circ}C$ for 30 days, respectively. From the results of abrasion damage test, it was seen that geotextile surface showed serious damage with increase in the particle size of sandpaper. Especially, the surface of needle punched nonwoven geotextile was easily abraded. For the $\#100,\;\#220$ sandpapers having large grain size, the retention ratio of tensile strength of the needle punched nonwoven geotextile decreased most seriously in the 200 cycle abrasion. But, for the $\#400\;and,\;\#800$ sandpapers having small grain size, the retention ratio of tensile strength of the woven geotextile decreased most seriously in the 200 cycle abrasion. Finally, it was seen that geotextiles showed no change in the tensile strength on immersion in acid solutions of pH 3 and pH 12 at $25^{\circ}C\;or\;50^{\circ}C$ for 30 days, respectively.
