Numerical study of the influence of suction increment duration upon the water retention curve in a Tempe cell
Arij Krifa, Robert P Chapuis
Dans les comptes rendus d’articles de la conférence: GeoSaskatoon 2023: 76th Canadian Geotechnical ConferenceSession: Unsaturated Soils
ABSTRACT: Understanding unsaturated soils is crucial in geotechnical and agricultural engineering. The water retention curve (WRC), which links soil water content and matric suction, is a key parameter in modeling soil behavior. The WRC is typically measured with long laboratory tests using devices like the Tempe cell, which applies suction increments over time. However, the 24-hour suction increment recommended by the ASTM D6836-16 standard may not be sufficient for soils like silty sands, especially when approaching their water entry value (WEV). This paper presents a numerical study on the WRC of silty sands using the Tempe cell to show that longer drainage periods are necessary to obtain an accurate WRC, particularly for suctions approaching or exceeding the WEV.
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Krifa, Arij, Chapuis, Robert P (2023) Numerical study of the influence of suction increment duration upon the water retention curve in a Tempe cell in GEO2023. Ottawa, Ontario: Canadian Geotechnical Society.
@inproceedings{Krifa_GEO2023_180,
author = {{Krifa, Arij}, {Chapuis, Robert P}}
title = {Numerical study of the influence of suction increment duration upon the water retention curve in a Tempe cell }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }
title = {Numerical study of the influence of suction increment duration upon the water retention curve in a Tempe cell }
booktitle = {Proceedings of the 76th Canadian Geotechnical Conference}
year = {2023}
organization = {The Canadian Geotechnical Society},
address = {Ottawa, Canada} }