A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Performance of multicomponent GCLs in high salinity impoundment applications
Abstract The interface transmissivity (θ) of two multicomponent geosynthetic clay liners (GCLs) is investigated upon hydration and permeation with a highly saline solution (TDS ≈ 260,000 mg/l; Na+ ~ 95,000 mg/l; K+~12,000 mg/l) at two stress levels (10 kPa and 150 kPa). One GCL had a smooth 0.2 mm-thick coating whereas the second GCL had a textured 1 mm-thick coating. For both GCLs, the interface transmissivity after 2-weeks is shown to be higher than at steady-state. The lower the geomembrane's (GMB) stiffness, the lower interface transmissivity. However, the effect is generally diminished at steady state and higher stress. The effect of GMB stiffness at 10 kPa is shown to be 1.6-times that at 150 kPa. Similarly, the 2-week and steady state interface transmissivity for the textured GMB was higher at 10 kPa than at 150 kPa. Coating texture and coating orientation are shown to have a significant effect on GMB/multicomponent GCL interface transmissivity. A hole in the coating aligned with GMB hole creates an additional flow path at the coating/GCL interface (θ Geofilm/GCL), however most of the flow occurs at the coating/GMB interface (θ Geofilm/GMB).
Performance of multicomponent GCLs in high salinity impoundment applications
Abstract The interface transmissivity (θ) of two multicomponent geosynthetic clay liners (GCLs) is investigated upon hydration and permeation with a highly saline solution (TDS ≈ 260,000 mg/l; Na+ ~ 95,000 mg/l; K+~12,000 mg/l) at two stress levels (10 kPa and 150 kPa). One GCL had a smooth 0.2 mm-thick coating whereas the second GCL had a textured 1 mm-thick coating. For both GCLs, the interface transmissivity after 2-weeks is shown to be higher than at steady-state. The lower the geomembrane's (GMB) stiffness, the lower interface transmissivity. However, the effect is generally diminished at steady state and higher stress. The effect of GMB stiffness at 10 kPa is shown to be 1.6-times that at 150 kPa. Similarly, the 2-week and steady state interface transmissivity for the textured GMB was higher at 10 kPa than at 150 kPa. Coating texture and coating orientation are shown to have a significant effect on GMB/multicomponent GCL interface transmissivity. A hole in the coating aligned with GMB hole creates an additional flow path at the coating/GCL interface (θ Geofilm/GCL), however most of the flow occurs at the coating/GMB interface (θ Geofilm/GMB).
Performance of multicomponent GCLs in high salinity impoundment applications
Rowe, R. Kerry (author) / AbdelRazek, A.Y. (author)
Geotextiles and Geomembranes ; 49 ; 358-368
2020-01-01
11 pages
Article (Journal)
Electronic Resource
English
Interface Transmissivity of Multicomponent GCLs
| British Library Conference Proceedings | 2016
Geosynthetic Clay Liners (GCLs)
British Library Online Contents | 2018
| Online Contents | 2012
Geosynthetic Clay Liners (GCLs)
British Library Online Contents | 2016
A suggested Methodology for Assessing the technical Equivalency of GCLs to GCLs
| British Library Conference Proceedings | 1994