Durability of Geotextiles to Outdoor Exposure in Hong Kong
Publication: Journal of Geotechnical Engineering
Volume 117, Issue 7
Abstract
The outdoor exposure performance of 14 geotextiles is studied to obtain specific durability data for Hong Kong conditions. Wide‐width tensile tests were carried out to evaluate the loss of strength and increase in brittleness of the selected geotextiles. The results show some interesting trends in the degradation behavior, with rate of strength loss generally increasing with radiation intensity. Type of polymer and geotextile construction have some influence, but for short periods of exposure, the difference in behavior between geotextiles is small considering the variability of the geotextile materials. The long‐term performance of geotextiles varies. Non‐UV‐stabilized polypropylene geotextiles are the least durable. For needle‐punched geotextiles, UV‐stabilized‐polypropylene fabrics perform in a similar manner to polyester fabrics. Needle‐punched geotextiles ( thick) are found to be more durable than the thinner woven geotextiles, irrespective of polymer type. For polypropylene geotextiles, needle‐punched fabrics also perform better than the thinner heat‐bonded geotextiles. Recommendations are given on specification requirements for protecting the geotextiles against UV attack during construction. Designers are advised to take into account the possible duration of exposure in designs involving large areas of geotextiles.
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Information & Authors
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Published In
Journal of Geotechnical Engineering
Volume 117 • Issue 7 • July 1991
Pages: 979 - 1000
Copyright
Copyright © 1991 ASCE.
History
Published online: Jul 1, 1991
Published in print: Jul 1991
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