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Effect of temperature on critical strength of geosynthetic clay liner / textured geomembrane composite systems
https://orcid.org/0000-0003-3427-4344
Abstract The objective of this study was to evaluate the effect of temperature on the shear behavior and critical strength of composite systems comprising of a geosynthetic clay liner (GCL) and textured geomembrane (GMX). For this purpose, displacement-controlled internal and interface direct shear tests were performed at both room temperature (≈20 °C) and an elevated temperature of 80 °C on three GCL/GMX composite systems at normal stresses varying from 100 kPa to 2000 kPa. An increase in the test temperature resulted in peak shear strength reduction up to 45% in GCL internal shear tests and up to 46% in GCL-GMX interface shear tests. The large-displacement shear strength at the elevated temperature was also reduced by up to 32% in GCL internal shear tests and up to 48% in GCL-GMX interface shear tests.
Highlights Conducted GCL internal and GCL-GMX interface shear tests. Testing conducted under high normal stress and elevated temperature. GCL peak and large displacement internal shear reduced at elevated temperature. GCL-GMX interface critical strength reduced at elevated temperature when the same failure mode occurred.
Effect of temperature on critical strength of geosynthetic clay liner / textured geomembrane composite systems
https://orcid.org/0000-0003-3427-4344
Abstract The objective of this study was to evaluate the effect of temperature on the shear behavior and critical strength of composite systems comprising of a geosynthetic clay liner (GCL) and textured geomembrane (GMX). For this purpose, displacement-controlled internal and interface direct shear tests were performed at both room temperature (≈20 °C) and an elevated temperature of 80 °C on three GCL/GMX composite systems at normal stresses varying from 100 kPa to 2000 kPa. An increase in the test temperature resulted in peak shear strength reduction up to 45% in GCL internal shear tests and up to 46% in GCL-GMX interface shear tests. The large-displacement shear strength at the elevated temperature was also reduced by up to 32% in GCL internal shear tests and up to 48% in GCL-GMX interface shear tests.
Highlights Conducted GCL internal and GCL-GMX interface shear tests. Testing conducted under high normal stress and elevated temperature. GCL peak and large displacement internal shear reduced at elevated temperature. GCL-GMX interface critical strength reduced at elevated temperature when the same failure mode occurred.
Effect of temperature on critical strength of geosynthetic clay liner / textured geomembrane composite systems
https://orcid.org/0000-0003-3427-4344
Abstract The objective of this study was to evaluate the effect of temperature on the shear behavior and critical strength of composite systems comprising of a geosynthetic clay liner (GCL) and textured geomembrane (GMX). For this purpose, displacement-controlled internal and interface direct shear tests were performed at both room temperature (≈20 °C) and an elevated temperature of 80 °C on three GCL/GMX composite systems at normal stresses varying from 100 kPa to 2000 kPa. An increase in the test temperature resulted in peak shear strength reduction up to 45% in GCL internal shear tests and up to 46% in GCL-GMX interface shear tests. The large-displacement shear strength at the elevated temperature was also reduced by up to 32% in GCL internal shear tests and up to 48% in GCL-GMX interface shear tests.
Highlights Conducted GCL internal and GCL-GMX interface shear tests. Testing conducted under high normal stress and elevated temperature. GCL peak and large displacement internal shear reduced at elevated temperature. GCL-GMX interface critical strength reduced at elevated temperature when the same failure mode occurred.
Effect of temperature on critical strength of geosynthetic clay liner / textured geomembrane composite systems
Ghazizadeh, Shahin (author) / Bareither, Christopher A. (author)
Geotextiles and Geomembranes ; 52 ; 12-26
2023-08-24
15 pages
Article (Journal)
Electronic Resource
English
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