Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Swell and Compressibility of Sand-Expansive Clay Mixtures
This paper investigates the swelling and compressibility characteristics of a sand-natural expansive clay mixture for use as a hydraulic barrier. Natural expansive clay used in this study was obtained from the city of Al-Qatif, located along the Arabian Gulf coastal region, Saudi Arabia. For these mixtures, sand was considered the host material and clay content varied between 10% and 60% by dry weight of sand. A series of one-dimensional odometer tests was conducted to evaluate the swelling potential, swelling pressure, and compressibility characteristics of sand-clay mixtures under two initial molding conditions (optimum and wet-of-optimum). Trends for the variation of swelling potential, swelling pressure, compression index and re-compression index with clay content were evaluated. These trends were consistent with fabric of sand-clay mixtures observed using scanning electron microscope technique. Furthermore, tests results revealed that the initial molding conditions and clay content had a significant effect on the swelling potential and compression index of sand-clay mixtures. For the sake of comparison, similar tests were performed on sand-bentonite mixtures with clay content ranging from 5% to 20%.
Swell and Compressibility of Sand-Expansive Clay Mixtures
This paper investigates the swelling and compressibility characteristics of a sand-natural expansive clay mixture for use as a hydraulic barrier. Natural expansive clay used in this study was obtained from the city of Al-Qatif, located along the Arabian Gulf coastal region, Saudi Arabia. For these mixtures, sand was considered the host material and clay content varied between 10% and 60% by dry weight of sand. A series of one-dimensional odometer tests was conducted to evaluate the swelling potential, swelling pressure, and compressibility characteristics of sand-clay mixtures under two initial molding conditions (optimum and wet-of-optimum). Trends for the variation of swelling potential, swelling pressure, compression index and re-compression index with clay content were evaluated. These trends were consistent with fabric of sand-clay mixtures observed using scanning electron microscope technique. Furthermore, tests results revealed that the initial molding conditions and clay content had a significant effect on the swelling potential and compression index of sand-clay mixtures. For the sake of comparison, similar tests were performed on sand-bentonite mixtures with clay content ranging from 5% to 20%.
Swell and Compressibility of Sand-Expansive Clay Mixtures
Shaker, Abdullah A. (Autor:in) / Elkady, Tamer Y. (Autor:in) / Dhowian, Abdulmuhsin (Autor:in)
Geo-Shanghai 2014 ; 2014 ; Shanghai, China
Soil Behavior and Geomechanics ; 15-24
05.05.2014
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
Swell and Compressibility of Sand-Expansive Clay Mixtures
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