Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Analysis of mechanical properties of geomembranes after laboratory installation damage test
The application of a large external stress or loading on a polymer will result in a decrease in its useful lifetime, primarily via physical creep, although it is possible that chemical degradation mechanisms may also be enhanced. Little has been reported regarding the effect of stress on the degradation of HDPE geomembranes (GM). The GM is subjected to heavy loadings from construction equipment particularly during installation. As a result, a protective cover is required for placement of materials over the GM liner to prevent damage from construction loading, and to prevent overstressing of the GM liner due to subsequent waste placement. Various types of protective covers are currently being used for landfill liners. The installation may represent the hardest stress on a geosynthetic during its service life. Durability of GM is gaining increasing attention day by day because of new engineering and environmental applications of GM. The resistance of GM to installation damage is a great concern though sufficient investigated data is not available. Though laboratory simulation of installation damage is a way to have accelerated results, it requires correlation with the actual field installation. In this study, a series of laboratory simulation test for installation damage of GM were carried out on HDPE (smooth and textured) GM. Mechanical properties of those GM were measured accordingly after installation.
Analysis of mechanical properties of geomembranes after laboratory installation damage test
The application of a large external stress or loading on a polymer will result in a decrease in its useful lifetime, primarily via physical creep, although it is possible that chemical degradation mechanisms may also be enhanced. Little has been reported regarding the effect of stress on the degradation of HDPE geomembranes (GM). The GM is subjected to heavy loadings from construction equipment particularly during installation. As a result, a protective cover is required for placement of materials over the GM liner to prevent damage from construction loading, and to prevent overstressing of the GM liner due to subsequent waste placement. Various types of protective covers are currently being used for landfill liners. The installation may represent the hardest stress on a geosynthetic during its service life. Durability of GM is gaining increasing attention day by day because of new engineering and environmental applications of GM. The resistance of GM to installation damage is a great concern though sufficient investigated data is not available. Though laboratory simulation of installation damage is a way to have accelerated results, it requires correlation with the actual field installation. In this study, a series of laboratory simulation test for installation damage of GM were carried out on HDPE (smooth and textured) GM. Mechanical properties of those GM were measured accordingly after installation.
Analysis of mechanical properties of geomembranes after laboratory installation damage test
Jeon, Han-Yong (Autor:in)
2014
7 Seiten, Bilder, Tabellen, 4 Quellen
(not paginated)
Aufsatz (Konferenz)
Datenträger
Englisch
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