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Hysteretic Model for the Evolution of Water Retention Curve with Void Ratio
This paper presents a model for the evaluation of the void ratio dependency of water retention curve (WRC) in deformable porous media. Models currently available in the literature for this purpose are primarily empirical in nature and rely on extensive laboratory testing for parameter identification. The approach proposed requires no additional parameters and enables quantification of the dependency of WRC on void ratio solely based on the form of WRC at the reference void ratio. Particular attention is given to the effect of hydraulic hysteresis on the evolution process, an aspect rarely addressed in the literature. Incremental expressions are presented for the evolution of main drying, main wetting, and scanning curves due to loading and change in the hydraulic path from scanning to main wetting/drying and vice versa. Validity of the model is demonstrated using experimental data for a range of compacted and reconstituted soils subjected to various hydro-mechanical paths. Good agreement is obtained between model predictions and experimental data in all the cases considered.
Hysteretic Model for the Evolution of Water Retention Curve with Void Ratio
This paper presents a model for the evaluation of the void ratio dependency of water retention curve (WRC) in deformable porous media. Models currently available in the literature for this purpose are primarily empirical in nature and rely on extensive laboratory testing for parameter identification. The approach proposed requires no additional parameters and enables quantification of the dependency of WRC on void ratio solely based on the form of WRC at the reference void ratio. Particular attention is given to the effect of hydraulic hysteresis on the evolution process, an aspect rarely addressed in the literature. Incremental expressions are presented for the evolution of main drying, main wetting, and scanning curves due to loading and change in the hydraulic path from scanning to main wetting/drying and vice versa. Validity of the model is demonstrated using experimental data for a range of compacted and reconstituted soils subjected to various hydro-mechanical paths. Good agreement is obtained between model predictions and experimental data in all the cases considered.
Hysteretic Model for the Evolution of Water Retention Curve with Void Ratio
Pasha, Amin Y. (author) / Khoshghalb, Arman (author) / Khalili, Nasser (author)
2017-02-21
Article (Journal)
Electronic Resource
Unknown
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