Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
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Evaluation of Installation Damage According to Simulated Installation Test Conditions and Creep Deformation of Geosynthetic Reinforcements

모사 시험 시공 조건에 따른 지오신세틱스 보강재의 시공 시 손상 및 크리프 변형에 의한 특성 평가

  • Choi, Bu Yeol (Department of Civil Engineering, Sangji University Graduate School) ;
  • Han, Sang Min (Department of Civil Engineering, Sangji University Graduate School) ;
  • Lee, Seung Ho (Department of Civil Engineering, Sangji University) ;
  • Kim, Seung Hyun (Department of Chemical Engineering, Inha University) ;
  • Jeon, Han-Yong (Department of Chemical Engineering, Inha University)
  • 최부열 (상지대학교 대학원 토목공학과) ;
  • 한상민 (상지대학교 대학원 토목공학과) ;
  • 이승호 (상지대학교 스마트건설공학과) ;
  • 김승현 (인하대학교 화학공학과) ;
  • 전한용 (인하대학교 화학공학과)
  • Received : 2021.07.25
  • Accepted : 2021.08.16
  • Published : 2021.08.31
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Abstract

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.

Keywords

Acknowledgement

This paper was supported by Industrial Strategic Technology Development Program (Grant #: 20010999) funded by the Ministry of Trade, Industry & Energy, Korea.

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