Performance of Nonwoven Geotextile in Coastal Protection Works with Marine Clays

This paper evaluates the long term performance of nonwoven-needle punched geotextile filter –used on marine clays, which prevail along the coastlines in Asia. The long term performance of the geotextile was investigated by exhuming the geotextiles from two coastal projects in Malaysia after more than five years performance. The filtration and mechanical properties of the exhumed geotextiles were tested to establish appropriate long term geotextile filter design criteria for cohesive soils and the requir d mechanical properties for construction survivability. These filter design criteria together with geotextile properties criti al for construction survivability are presented and recommended for typical Asian coastal revetment construction conditions.