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Equations for the soil-water characteristic curve
Abstract
The soil-water characteristic curve can be used to estimate various parameters used to describe unsaturated soil behaviour. A general equation for the soil-water characteristic curve is proposed. A nonlinear, least-squares computer program is used to determine the best-fit parameters for experimental data presented in the literature. The equation is based on the assumption that the shape of the soil-water characteristic curve is dependent upon the pore-size distribution of the soil (i.e., the desaturation is a function of the pore-size distribution). The equation has the form of an integrated frequency distribution curve. The equation provides a good fit for sand, silt, and clay soils over the entire suction range from 0 to 10 6 kPa. Key words : soil-water characteristic curve, pore-size distribution, nonlinear curve fitting, soil suction, water content.
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Citations
Cited by
THM-coupled finite element analysis of frozen soil: formulation and application
Nishimura, S., Gens, A., Olivella, S., & Jardine, R. J. (2009) · Géotechnique · doi:10.1680/geot.2009.59.3.159 · Cited by 334
Lebeau, M., & Konrad, J. (2010) · Water Resources Research · doi:10.1029/2010wr009092 · Cited by 270
A proxy for all seasons? A synthesis of clumped isotope data from Holocene soil carbonates
Kelson, J. R., Huntington, K. W., Breecker, D. O., Burgener, L. K., Gallagher, T. M., Hoke, G. D., & Petersen, S. V. (2020) · Quaternary Science Reviews · doi:10.1016/j.quascirev.2020.106259 · Cited by 113
Massman, W. J. (2012) · Water Resources Research · doi:10.1029/2011wr011710 · Cited by 53
Metadata
- Authors
- Fredlund, D. G., & Xing, A.
- Venue
- Canadian Geotechnical Journal
- Publisher
- Canadian Science Publishing
- Published
- 1994-08-01
- Volume
- 31
- Issue
- 4
- Pages
- 521-532
- ISSN
- 0008-3674 (ISSN-L)
- 1208-6010
- OpenAlex
- W2139481755
- Cited by
- 3,149
- References
- 0
- FWCI
- 16.12
- Type
- journal article
- Language
- en
- Open access
- closed
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- Fredlund, D. G., & Xing, A. (1994). Equations for the soil-water characteristic curve. Canadian Geotechnical Journal. https://doi.org/10.1139/t94-061
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