SYMPOSIA PAPER Published: 01 January 1993
STP24310S

Intrinsic Confined and Unconfined Load-Deformation Properties of Geotextiles

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This paper presents intrinsic load-deformation properties of different geotextiles under confined and unconfined conditions. The confined load-deformation properties were determined by a test method (the intrinsic confined test) proposed by Wu (1991) for design and specification of geotextile-reinforced soil structures. The intrinsic confined test has three distinct characteristics: (1) it is an “element” test, thus the load-deformation properties determined from the test are the intrinsic properties of the geotextile; (2) the test measures the confined stiffness and strength of geotextiles without inducing soil-geotextile interface adhesion, thereby simulates the predominant operational condition in geotextile-reinforced soil structures; and (3) the stiffness and strength obtained from the test are conservative values if soil-geotextile interface slippage does occur. A detailed procedure for the intrinsic test method is described. The described method uses only a thin rubber membrane, without soil, for confinement.Four nonwoven geotextiles and one woven geotextile were tested.Discussions of the test results are presented.

Author Information

Ballegeer, JP
GEI Consultants, Inc., Englewood, CO
Wu, JTH
University of Colorado at Denver, Denver, CO
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Details
Developed by Committee: D35
Pages: 16–31
DOI: 10.1520/STP24310S
ISBN-EB: 978-0-8031-5242-7
ISBN-13: 978-0-8031-1885-0