Analysis of the Shear Strength of a Soil-Geosynthetic Interface

The paper presents the results of the shear strength measurements of a soil-geosynthetic interface. The tests were executed using a large-size direct shear test apparatus. A total of 5 different samples of materials were tested, i.e., ash, sand, well-graded gravel, fine poorly-graded gravel, and med...

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Main Authors: Stacho Jakub, Sulovska Monika, Slavik Ivan
Format: Article
Language:English
Published: Sciendo 2023-06-01
Series:Civil and Environmental Engineering
Subjects:
Online Access:https://doi.org/10.2478/cee-2023-0040
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author Stacho Jakub
Sulovska Monika
Slavik Ivan
author_facet Stacho Jakub
Sulovska Monika
Slavik Ivan
author_sort Stacho Jakub
collection DOAJ
description The paper presents the results of the shear strength measurements of a soil-geosynthetic interface. The tests were executed using a large-size direct shear test apparatus. A total of 5 different samples of materials were tested, i.e., ash, sand, well-graded gravel, fine poorly-graded gravel, and medium poorly-graded gravel. These materials were reinforced using different types of geosynthetics, i.e., Thrace WG80 black woven geotextile, Tencate Miragrid GX55/30 woven geogrid, and Thrace TG3030S rigid polypropylene geogrid. An interface coefficient α, which represents the ratio of the soil-geosynthetic interface shear strength to the shear strength of unreinforced material sample, was determined for given combination of the material and geosynthetics. The coefficient α reached a greater value in the critical stress state than in the peak stress state for sands and gravels reinforced using GX55/30 and TG3030S geogrids. The value of the coefficient α was in a range of 0.87 - 1.04 for gravels and 1.03 - 1.19 for sand. The black woven geotextile was used as the reinforcement only in samples of sand and ash. The results pointed to the different behaviour of these materials in the testing of the interface shear strength.
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spelling doaj.art-a0ddc943b7884db7a0cfe2d5b6c08cf62023-10-16T06:07:33ZengSciendoCivil and Environmental Engineering2199-65122023-06-0119145246310.2478/cee-2023-0040Analysis of the Shear Strength of a Soil-Geosynthetic InterfaceStacho Jakub0Sulovska Monika1Slavik Ivan21Department of Geotechnics, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Slovakia.1Department of Geotechnics, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Slovakia.1Department of Geotechnics, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Slovakia.The paper presents the results of the shear strength measurements of a soil-geosynthetic interface. The tests were executed using a large-size direct shear test apparatus. A total of 5 different samples of materials were tested, i.e., ash, sand, well-graded gravel, fine poorly-graded gravel, and medium poorly-graded gravel. These materials were reinforced using different types of geosynthetics, i.e., Thrace WG80 black woven geotextile, Tencate Miragrid GX55/30 woven geogrid, and Thrace TG3030S rigid polypropylene geogrid. An interface coefficient α, which represents the ratio of the soil-geosynthetic interface shear strength to the shear strength of unreinforced material sample, was determined for given combination of the material and geosynthetics. The coefficient α reached a greater value in the critical stress state than in the peak stress state for sands and gravels reinforced using GX55/30 and TG3030S geogrids. The value of the coefficient α was in a range of 0.87 - 1.04 for gravels and 1.03 - 1.19 for sand. The black woven geotextile was used as the reinforcement only in samples of sand and ash. The results pointed to the different behaviour of these materials in the testing of the interface shear strength.https://doi.org/10.2478/cee-2023-0040geosyntheticsgeogridsoil reinforcementshear strength of soilsoil-geosynthetics interface
spellingShingle Stacho Jakub
Sulovska Monika
Slavik Ivan
Analysis of the Shear Strength of a Soil-Geosynthetic Interface
Civil and Environmental Engineering
geosynthetics
geogrid
soil reinforcement
shear strength of soil
soil-geosynthetics interface
title Analysis of the Shear Strength of a Soil-Geosynthetic Interface
title_full Analysis of the Shear Strength of a Soil-Geosynthetic Interface
title_fullStr Analysis of the Shear Strength of a Soil-Geosynthetic Interface
title_full_unstemmed Analysis of the Shear Strength of a Soil-Geosynthetic Interface
title_short Analysis of the Shear Strength of a Soil-Geosynthetic Interface
title_sort analysis of the shear strength of a soil geosynthetic interface
topic geosynthetics
geogrid
soil reinforcement
shear strength of soil
soil-geosynthetics interface
url https://doi.org/10.2478/cee-2023-0040
work_keys_str_mv AT stachojakub analysisoftheshearstrengthofasoilgeosyntheticinterface
AT sulovskamonika analysisoftheshearstrengthofasoilgeosyntheticinterface
AT slavikivan analysisoftheshearstrengthofasoilgeosyntheticinterface