Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Experimental Study on Highly Compacted Bentonite Aggregates Subjected to Wetting and Drying
Abstract Microstructure of compacted bentonite is an important aspect which controls its hydro-mechanical behavior, also is vital in constitutive modelling. In order to understand this mechanism, the wetting and drying behavior of compacted bentonite with initial dry densities of 1.9 g/cm3 was investigated by environmental scanning electron microscopy (ESEM). The attempt of quantitative interpretation was done by digital image analysis at aggregates level (in micro meters). The macro pores between aggregates were clearly sensitive to change of suction, while there were only small volume changes of the aggregates. Volumetric strain of the measured aggregates varied. After one wetting-drying cycle, some new macro pores were formed and the hysteretic behavior of inter-aggregate pores was observed.
Experimental Study on Highly Compacted Bentonite Aggregates Subjected to Wetting and Drying
Abstract Microstructure of compacted bentonite is an important aspect which controls its hydro-mechanical behavior, also is vital in constitutive modelling. In order to understand this mechanism, the wetting and drying behavior of compacted bentonite with initial dry densities of 1.9 g/cm3 was investigated by environmental scanning electron microscopy (ESEM). The attempt of quantitative interpretation was done by digital image analysis at aggregates level (in micro meters). The macro pores between aggregates were clearly sensitive to change of suction, while there were only small volume changes of the aggregates. Volumetric strain of the measured aggregates varied. After one wetting-drying cycle, some new macro pores were formed and the hysteretic behavior of inter-aggregate pores was observed.
Experimental Study on Highly Compacted Bentonite Aggregates Subjected to Wetting and Drying
Sun, Haiquan (Autor:in) / Mašín, David (Autor:in) / Najser, Jan (Autor:in)
01.01.2018
4 pages
Aufsatz/Kapitel (Buch)
Elektronische Ressource
Englisch
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