Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Thermo-hydro-mechanical behavior of compacted bentonite-sand mixtures: an experimental study
Heat, gas, and leachate are primary by-products of landfill processes in municipal solid waste landfills. In nuclear waste repository, temperature of the waste also raises due to radioactivity processes. Temperature increase in the repository induces hydro-mechanical processes of its sealing material. Moderate to high temperature is expected to be encountered in the field situation. In this thesis, a study on the thermo-hydro-mechanical behavior of compacted bentonite-sand mixtures which are among the materials proposed to be used as sealing material for landfills and hazardous waste repository is presented. Mixtures of a calcium-type bentonite, Calcigel, and quartz sand were used in this study. Series of tests including suction and swelling pressure measurement, drying-wetting under unconfined and confined conditions were conducted at a moderately high temperature. Tests at room temperature including basic and physico-chemical characterization, microstructure and fabric studies, and osmotic suction were conducted in order to provide insight into understanding the hydro-mechanical processes taking place in the bentonite. The experimental data obtained are presented and compared to the result of the previous tests for the same material performed by other researchers at room temperature. The changes in hydro-mechanical behavior due to elevated temperature were analyzed and discussed based on the suction components of soil which are influenced by temperature. At the end, conclusions concerning the temperature effects on the hydro-mechanical behavior of the materials are drawn and suggestions for future studies are made. ; In Folge der Prozesse in den Siedlungsabfalldeponien entstehen Wärme, Gas und Sickerwasser als Nebenprodukte. In Deponien für nukleare Abfälle nimmt die Wärme in Abhängigkeit deren Radioaktivität zu. Aufgrund der Wärmeentwicklung im Abfall kommt es in dem die Kanister umgebenden Dichtelement zu Temperaturänderungen, was verschiedene hydro-mechanische Prozesse verursacht, die sowohl bei niedrigen ...
Thermo-hydro-mechanical behavior of compacted bentonite-sand mixtures: an experimental study
Heat, gas, and leachate are primary by-products of landfill processes in municipal solid waste landfills. In nuclear waste repository, temperature of the waste also raises due to radioactivity processes. Temperature increase in the repository induces hydro-mechanical processes of its sealing material. Moderate to high temperature is expected to be encountered in the field situation. In this thesis, a study on the thermo-hydro-mechanical behavior of compacted bentonite-sand mixtures which are among the materials proposed to be used as sealing material for landfills and hazardous waste repository is presented. Mixtures of a calcium-type bentonite, Calcigel, and quartz sand were used in this study. Series of tests including suction and swelling pressure measurement, drying-wetting under unconfined and confined conditions were conducted at a moderately high temperature. Tests at room temperature including basic and physico-chemical characterization, microstructure and fabric studies, and osmotic suction were conducted in order to provide insight into understanding the hydro-mechanical processes taking place in the bentonite. The experimental data obtained are presented and compared to the result of the previous tests for the same material performed by other researchers at room temperature. The changes in hydro-mechanical behavior due to elevated temperature were analyzed and discussed based on the suction components of soil which are influenced by temperature. At the end, conclusions concerning the temperature effects on the hydro-mechanical behavior of the materials are drawn and suggestions for future studies are made. ; In Folge der Prozesse in den Siedlungsabfalldeponien entstehen Wärme, Gas und Sickerwasser als Nebenprodukte. In Deponien für nukleare Abfälle nimmt die Wärme in Abhängigkeit deren Radioaktivität zu. Aufgrund der Wärmeentwicklung im Abfall kommt es in dem die Kanister umgebenden Dichtelement zu Temperaturänderungen, was verschiedene hydro-mechanische Prozesse verursacht, die sowohl bei niedrigen ...
Thermo-hydro-mechanical behavior of compacted bentonite-sand mixtures: an experimental study
Arifin, Yulian Firmana (Autor:in) / Schanz, Tom
06.10.2008
Hochschulschrift
Elektronische Ressource
Englisch
Temperatur , Doktorarbeit , ddc:620 , thesis
An experimental study on hydro-mechanical characteristics of compacted bentonite-sand mixtures
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