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第四届亚洲土工合成材料学术大会论文集 英文版_53.docx

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Proceedings oj ihe 4,hAsian Regional Conference on Geosynthetics35June 17-20. 2(X)8 Shanghai, ChinaWEATHERING DEGRADATION OF POLYESTER ANDPOLYPROPYLENE GEOTEXTILESP.C. Lodi1. B.S. Bueno2. O.M. Vilar3and N.S. Correia4ABSTRACT:This paper presents results of physical and mechanical tests in polyester (PET) and polypropilene (PP) nonwovengeotextiles that were exposed to weathering conditions (solar radiation, humidity, wind, rain) after some specific periods ofexposure (1, 2, 3 and 4 months). ASTM D5970 and Brazilian standards (NBR) recommendation were followed in this research.Results show variations in tensile properties and in the mass per unit area. Variations in lhe deformations were more significantin the PP geotextile when compared to (he PET geotextile.KEYWORDS:geotextiles, degradation, weathering exposure, mechanical propertiesINTRODUCTIONSolar irradiance is a critical weathering variable for manymaterials and may cause color change, surface damage and
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Term
Summer
Professor
Eric Larson
Tags
Light, Sunlight, Ultraviolet, S o Paulo, geotextiles

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