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Stress-Strain Properties of Geosynthetics by Confined Extension Tests  

Bang, Yoon-Kyung (Department of Civil Engineering, Daewon Science College)
Jeon, Young-Dae (Department of Civil Engineering, Graduated School of Semyung University)
Lee, Jun-Dae (Department of Civil Engineering, Semyung University)
Publication Information
Journal of the Korean Society of Safety / v.17, no.2, 2002 , pp. 52-57 More about this Journal
Abstract
In this study. stress-strain relationships were investigated by performing the confined extension tests for seven types of geosynthetics such as geotextiles, composite geosynthetics and geogrids. A comparison was made between unconfined and confined moduli for each geosynthetic material to quantify the soil confinement effect on stress-strain properties. A comparison was also made between the increase of moduli at the same strain level with the types of the geosynthetics to demonstrate the different stress-strain responses. Based on the result of the extension tests, the higher the confining stress, the larger the secant modulus of geosynthetics. The secant modulus at 5% strain is twice as much as that of 10% strain, especially there is a noticeable increasing of secant modulus for the two nonwoven geotextiles.
Keywords
geosynthetics; confined extension test; wide-width tensile tests; stress-strain relationship; secant modulus;
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  • Reference
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