Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
FTIR Investigation of Molecular Interactions in Swelling Clays and their Role on Swelling and Other Macroscopic Properties
When pore fluid dielectric properties differ or the composition of the clay minerals in the soil is changed, most clays in general, and swelling clays in particular, exhibit dramatic differences in swelling behavior, mechanical properties and fluid flow response. Our prior work has also shown that in swelling clays, particles "break down" as a result of exfoliation. Thus, it appears that molecular scale interactions between clay and fluids dramatically influence clay microstructure during swelling, and resulting macroscopic behavior of swelling clays. Innovative FTIR experiments have been conducted on undisturbed and disturbed clay samples. FTIR experiments were used to calculate the flow rate of water molecules in the interlayer of Na-montmorillonite. The relative "strength" of molecular interactions between clay and fluids were found and were correlated to the changes in the clay microstructure and macroscopic properties such as swelling pressure, permeability and consolidation. This paper summarizes the use of FTIR as a powerful tool to connect macroscale properties to molecular scale interactions in swelling clays.
FTIR Investigation of Molecular Interactions in Swelling Clays and their Role on Swelling and Other Macroscopic Properties
When pore fluid dielectric properties differ or the composition of the clay minerals in the soil is changed, most clays in general, and swelling clays in particular, exhibit dramatic differences in swelling behavior, mechanical properties and fluid flow response. Our prior work has also shown that in swelling clays, particles "break down" as a result of exfoliation. Thus, it appears that molecular scale interactions between clay and fluids dramatically influence clay microstructure during swelling, and resulting macroscopic behavior of swelling clays. Innovative FTIR experiments have been conducted on undisturbed and disturbed clay samples. FTIR experiments were used to calculate the flow rate of water molecules in the interlayer of Na-montmorillonite. The relative "strength" of molecular interactions between clay and fluids were found and were correlated to the changes in the clay microstructure and macroscopic properties such as swelling pressure, permeability and consolidation. This paper summarizes the use of FTIR as a powerful tool to connect macroscale properties to molecular scale interactions in swelling clays.
FTIR Investigation of Molecular Interactions in Swelling Clays and their Role on Swelling and Other Macroscopic Properties
Katti, Kalpana S. (Autor:in) / Katti, Dinesh R. (Autor:in)
Fifth Biot Conference on Poromechanics ; 2013 ; Vienna, Austria
Poromechanics V ; 1682-1687
18.06.2013
Aufsatz (Konferenz)
Elektronische Ressource
Englisch
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