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Unsaturated Hydraulic Conductivity of Compacted Bentonite: Revisit of Microstructure Effects
Abstract Developing a sound theoretical description for the evolution of unsaturated hydraulic conductivity of compacted bentonite during re-saturation has remained a challenge because of the complex microstructure effects influenced by physico-chemical phenomena. This paper proposes a new relationship for the unsaturated hydraulic conductivity of compacted bentonite based on Kozeny-Carman relationship. A new relationship is also proposed for the relative permeability of compacted bentonite that incorporates the effects of microstructure swelling. The application of the new relationship for the case of compacted GMZ bentonite provides well correlated results with the experimental data reported in the literature.
Unsaturated Hydraulic Conductivity of Compacted Bentonite: Revisit of Microstructure Effects
Abstract Developing a sound theoretical description for the evolution of unsaturated hydraulic conductivity of compacted bentonite during re-saturation has remained a challenge because of the complex microstructure effects influenced by physico-chemical phenomena. This paper proposes a new relationship for the unsaturated hydraulic conductivity of compacted bentonite based on Kozeny-Carman relationship. A new relationship is also proposed for the relative permeability of compacted bentonite that incorporates the effects of microstructure swelling. The application of the new relationship for the case of compacted GMZ bentonite provides well correlated results with the experimental data reported in the literature.
Unsaturated Hydraulic Conductivity of Compacted Bentonite: Revisit of Microstructure Effects
Chen, Tian (author) / Sedighi, Majid (author) / Jivkov, Andrey (author) / Seetharam, Suresh C. (author)
2018-10-11
7 pages
Article/Chapter (Book)
Electronic Resource
English
Compacted bentonite , Clay microstructure , Unsaturated , Permeability Engineering , Geoengineering, Foundations, Hydraulics , Geotechnical Engineering & Applied Earth Sciences , Soil Science & Conservation , Sustainable Development , Waste Water Technology / Water Pollution Control / Water Management / Aquatic Pollution
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