Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Multi-functional direct shear apparatus for geosynthetic interfaces with its application on various GMB/GCL interfaces
https://orcid.org/http://orcid.org/0000-0002-4370-8784
A geosynthetic liner system that consists of geomembrane (GMB) and geosynthetic clay liner (GCL) is vital for landfill stability analysis and it is essential to investigate the shear characteristics of GMB/GCL interface. This paper introduces a new direct shear apparatus for various geosynthetic interfaces with innovative designing, and using this apparatus 48 shear test sets of four GMB/GCL interface types are conducted under a normal stress level of 100–500 kPa and a shear rate of 0.1–100 mm/min. Effects of the surface roughness of GMB and the hydration condition of GCL on the shear stress–displacement relationship and shear strength of interfaces are investigated. Results show that the evolution of physical phenomena from shear deformation of GCL (denoted as shear phase) to frictional slip between GMB and GCL (denoted as friction phase) occurs at the critical state of peak shear strength where GMB/GCL interfaces provide the largest shear resistance. For GMB/hydrated GCL, shear phase can be further divided into pure shear phase and reinforced shear phase by initial peak strength. Thus, phased shear mechanism of GMB/GCL interface is revealed with explanations on physical and mechanical results. Some future prospects on GMB/GCL interfaces are also proposed.
Multi-functional direct shear apparatus for geosynthetic interfaces with its application on various GMB/GCL interfaces
https://orcid.org/http://orcid.org/0000-0002-4370-8784
A geosynthetic liner system that consists of geomembrane (GMB) and geosynthetic clay liner (GCL) is vital for landfill stability analysis and it is essential to investigate the shear characteristics of GMB/GCL interface. This paper introduces a new direct shear apparatus for various geosynthetic interfaces with innovative designing, and using this apparatus 48 shear test sets of four GMB/GCL interface types are conducted under a normal stress level of 100–500 kPa and a shear rate of 0.1–100 mm/min. Effects of the surface roughness of GMB and the hydration condition of GCL on the shear stress–displacement relationship and shear strength of interfaces are investigated. Results show that the evolution of physical phenomena from shear deformation of GCL (denoted as shear phase) to frictional slip between GMB and GCL (denoted as friction phase) occurs at the critical state of peak shear strength where GMB/GCL interfaces provide the largest shear resistance. For GMB/hydrated GCL, shear phase can be further divided into pure shear phase and reinforced shear phase by initial peak strength. Thus, phased shear mechanism of GMB/GCL interface is revealed with explanations on physical and mechanical results. Some future prospects on GMB/GCL interfaces are also proposed.
Multi-functional direct shear apparatus for geosynthetic interfaces with its application on various GMB/GCL interfaces
https://orcid.org/http://orcid.org/0000-0002-4370-8784
A geosynthetic liner system that consists of geomembrane (GMB) and geosynthetic clay liner (GCL) is vital for landfill stability analysis and it is essential to investigate the shear characteristics of GMB/GCL interface. This paper introduces a new direct shear apparatus for various geosynthetic interfaces with innovative designing, and using this apparatus 48 shear test sets of four GMB/GCL interface types are conducted under a normal stress level of 100–500 kPa and a shear rate of 0.1–100 mm/min. Effects of the surface roughness of GMB and the hydration condition of GCL on the shear stress–displacement relationship and shear strength of interfaces are investigated. Results show that the evolution of physical phenomena from shear deformation of GCL (denoted as shear phase) to frictional slip between GMB and GCL (denoted as friction phase) occurs at the critical state of peak shear strength where GMB/GCL interfaces provide the largest shear resistance. For GMB/hydrated GCL, shear phase can be further divided into pure shear phase and reinforced shear phase by initial peak strength. Thus, phased shear mechanism of GMB/GCL interface is revealed with explanations on physical and mechanical results. Some future prospects on GMB/GCL interfaces are also proposed.
Multi-functional direct shear apparatus for geosynthetic interfaces with its application on various GMB/GCL interfaces
Acta Geotech.
Feng, Shi-Jin (Autor:in) / Shen, Yang (Autor:in) / Zheng, Qi-Teng (Autor:in) / Shi, Jia-Liang (Autor:in)
Acta Geotechnica ; 17 ; 993-1008
01.03.2022
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
Evolution of physical phenomena , Geosynthetic interface , GMB/GCL interface , Multi-functional direct shear apparatus Engineering , Geoengineering, Foundations, Hydraulics , Solid Mechanics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Soft and Granular Matter, Complex Fluids and Microfluidics
| Springer Verlag | 2023
Dynamic shear behaviour of geosynthetic interfaces
| British Library Conference Proceedings | 1997
Shear strength characteristics at geosynthetic interfaces
| British Library Conference Proceedings | 1997