Prediction of Weatherability of Geosynthetics under Exposure Conditions

Geotextile composites, improving the weatherability, were composed of recycled polyester geotextile combined with carbon black used as an ultraviolet stabilizer and polypropylene geotextile by needle-punching method, and were evaluated for such as physical properties, ultraviolet resistance, and chemical stability. Retention of tensile properties of nonwoven polypropylene geotextiles were decreased about 50% by the exposed condition with ultraviolet but those of geotextile composites were decreased slightly than polypropylene geotextiles. Geotextile composites which have heavier weights of polyester geotextile were more stable against ultraviolet rays and chemical degradation.