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Textile Research Journal
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Performance Evaluation of Nonwoven Geotextiles in Soil-Fabric Interaction

Honglian Zhai

College of Engineering, Auburn University, Auburn, Alabama 36849, U.S.A.

Sumita Basu Mallick

College of Engineering, Auburn University, Auburn, Alabama 36849, U.S.A.

David Elton

College of Engineering, Auburn University, Auburn, Alabama 36849, U.S.A.

Sabit Adanur

College of Engineering, Auburn University, Auburn, Alabama 36849, U.S.A.

A laboratory research program was undertaken to determine the influence of fabric mass and normal pressure on the stress-strain characteristics of a geotextile-soil inter face. Pullout tests were done in a large pullout box using three needlepunched non woven geotextiles with the same apparent opening sizes and different mass/unit areas. A dry medium sand was the cover material. Effects of mass/unit area of the fabric and normal pressure on pullout test results were analyzed in terms of ultimate pullout load and strain at different points on the geotextile specimens. Pullout tests were conducted at 7, 14, and 21 kPa normal pressures and at a constant displacement rate of 20 mm/min. Pullout resistance decreased with increased gootextile mass / unit area due to extensive necking of the geotextiles. Pullout resistance also increased with increasing normal pressure. Effective embedment length was determined at each normal pressure level based on the strain developed along the length of the geotextiles.

Textile Research Journal, Vol. 66, No. 4, 269-276 (1996)
DOI: 10.1177/004051759606600414
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