모사 시험 시공 조건에 따른 지오신세틱스 보강재의 시공 시 손상 및 크리프 변형에 의한 특성 평가 Evaluation of Installation Damage According to Simulated Installation Test Conditions and Creep Deformation of Geosynthetic Reinforcements
In this study, a total of six geosynthetic reinforcements, including five geogrid types (design strengths of 4, 6, 8, 10, and 15 ton/m) and a woven geotextile (design strength of 4 ton/m) were used to simulate the degree of damage according to the installation damage test conditions, and property ev...
In this study, a total of six geosynthetic reinforcements, including five geogrid types (design strengths of 4, 6, 8, 10, and 15 ton/m) and a woven geotextile (design strength of 4 ton/m) were used to simulate the degree of damage according to the installation damage test conditions, and property evaluation by creep deformation was performed. The degree of installation damage during the construction period of the geosynthetic samples was tested in accordance with ISO 10722:2019, and soil structure compaction was performed with fill thicknesses of 20, 30, 40, 60, 80, and 100 cm. After the installation damage test, geosynthetic samples were removed, and the tensile strength before and after the installation damage test was compared by applying a wide tensile strength test (ASTM D 4595). Jumunjin standard sand was used as the filling material and after a soil compaction installation damage test, the tensile strength of the reinforcing geosynthetic sample decreased by 2-30% overall, and the reduction factor owing to installation damage was calculated by comparing the tensile strength before and after installation damage testing. The GRI GS-10 test method was used to evaluate the creep deformation at 10 000 h, and the GRI GG-4 method was used to determine the reduction coefficient owing to creep deformation. From the creep test, it was found that the creep strain of the damaged geosynthetic sample by filling depth under the same load conditions was approximately 1-2% higher than that of the undamaged sample.
In this study, a total of six geosynthetic reinforcements, including five geogrid types (design strengths of 4, 6, 8, 10, and 15 ton/m) and a woven geotextile (design strength of 4 ton/m) were used to simulate the degree of damage according to the installation damage test conditions, and property evaluation by creep deformation was performed. The degree of installation damage during the construction period of the geosynthetic samples was tested in accordance with ISO 10722:2019, and soil structure compaction was performed with fill thicknesses of 20, 30, 40, 60, 80, and 100 cm. After the installation damage test, geosynthetic samples were removed, and the tensile strength before and after the installation damage test was compared by applying a wide tensile strength test (ASTM D 4595). Jumunjin standard sand was used as the filling material and after a soil compaction installation damage test, the tensile strength of the reinforcing geosynthetic sample decreased by 2-30% overall, and the reduction factor owing to installation damage was calculated by comparing the tensile strength before and after installation damage testing. The GRI GS-10 test method was used to evaluate the creep deformation at 10 000 h, and the GRI GG-4 method was used to determine the reduction coefficient owing to creep deformation. From the creep test, it was found that the creep strain of the damaged geosynthetic sample by filling depth under the same load conditions was approximately 1-2% higher than that of the undamaged sample.
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