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A platform for research: civil engineering, architecture and urbanism
Comportement hydrique d'une argile non saturée
The paper deals with the hydraulic behaviour of a clay used in the construction of the Boughrara dam core (West of Algeria). Various methods were used, on the one hand, to characterise the drying-wetting paths, and on the other hand, to measure the hydraulic conductivity, according to the degree of saturation (osmotic method, desiccators' method with saturated salt solutions, the Fredlund & Xing model based on the exploitation of the water retention curve). The used techniques allowed scanning a wide range of suctions up to 340 MPa. Subsequently, we were able to measure very low values of unsaturated permeability (up to 10−16 m/s). In addition, mathematical models of hydraulic conductivity were calibrated on the experimental results. This allows to establish a k(Sr) function on a wide range of degree of saturation. This function is necessary for modeling hydro-mechanical behaviour of the dam core.
Comportement hydrique d'une argile non saturée
The paper deals with the hydraulic behaviour of a clay used in the construction of the Boughrara dam core (West of Algeria). Various methods were used, on the one hand, to characterise the drying-wetting paths, and on the other hand, to measure the hydraulic conductivity, according to the degree of saturation (osmotic method, desiccators' method with saturated salt solutions, the Fredlund & Xing model based on the exploitation of the water retention curve). The used techniques allowed scanning a wide range of suctions up to 340 MPa. Subsequently, we were able to measure very low values of unsaturated permeability (up to 10−16 m/s). In addition, mathematical models of hydraulic conductivity were calibrated on the experimental results. This allows to establish a k(Sr) function on a wide range of degree of saturation. This function is necessary for modeling hydro-mechanical behaviour of the dam core.
Comportement hydrique d'une argile non saturée
Lachgueur, Karima (author) / Taibi, Said (author) / Abou-Bekr, Nabil (author)
European Journal of Environmental and Civil Engineering ; 14 ; 329-360
2010-03-01
32 pages
Article (Journal)
Electronic Resource
Unknown
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