Prediction of Soil–Water Characteristic Curve Based on Soil Index Properties

  • Navid Ganjian
  • Yadollah Pashang Pisheh
  • Seyed Majdeddin Mir Mohammad Hosseini
Part of the Springer Proceedings in Physics book series (SPPHY, volume 112)


The measurement of soil parameters for the unsaturated soil constitutive models needs extensive laboratory tests. For most practical problems, it has been found that approximate soil properties are adequate for analysis. Thus, empirical procedures to evaluate unsaturated soil parameters would be valuable. The soil–water characteristic curve (SWCC) can be used to estimate various parameters used to describe unsaturated soil behavior. The SWCC is a relationship between soil suction and some measure of the water content. It can be measured or predicted based on soil index properties. Estimation based on index properties is highly desirable due to its simplicity and low cost.

In this paper, a new model for predicting the SWCC based on soil index properties and Van Genuchten equation is presented. The comparisons show that the SWCC predicted by this model is in a good agreement with the experimental results.

Key Words

unsaturated soils soil–water characteristic curve (SWCC) matric suction water content 


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  1. Arya LM, Paris JF (1981) A Physicoempirical Model to Predict the Soil Moisture Characteristic from Particle-Size Distribution and Bulk Density, Soil Sci Soc Am J 45(6):1023-1030CrossRefGoogle Scholar
  2. Assouline S, Tessier D, and Bruand A (1998) A Conceptual Model of the Soil Water Retention Curve, Water Resource Research 34(2):223–231CrossRefGoogle Scholar
  3. Brooks RH, Corey AT (1964) Hydraulic Properties of Porous Media, Hydrology Papers, 3. Fort Collins, Colorado State UniversityGoogle Scholar
  4. Escario V, Juca J (1989) Strength and deformation of partly saturated soils. In: Proc 12th Int Conf Soil Mech Found Eng, Rio de Janerio, 3:43–46Google Scholar
  5. Farrell D, Larson W (1972) Modeling the Pore Structure of Porous Media, Water Resource Research 8(3):699–706Google Scholar
  6. Fredlund DG (2000) The implementation of Unsaturated Soil mechanics into geotechnical engineering, Can Geotech J 37:963–986CrossRefGoogle Scholar
  7. Fredlund DG, Raharjo H (1993) Soil Mechanics for Unsaturated Soils. Wiley InterscienceGoogle Scholar
  8. Fredlund DG, Xing A (1994) Equations for the Soil–Water Characteristic Curve, Can Geotech J 31(3):521–532Google Scholar
  9. Fredlund M, Fredlund D, Wilson G (1997) Prediction of the Soil–Water Characteristic Curve from Grain–Size Distribution and Volume–Mass Properties. In: Proc 3rd Brazilian Symp on Unsaturated Soils, Rio de Janerio.Google Scholar
  10. Gardner WR (1958) Some Steady State Solutions of the Unsaturated Moisture Flow Equation with Application to Evaporation from a Water-Table, Soil Science 85(4): 228–232CrossRefGoogle Scholar
  11. Gupta SC, Larson WE (1979) Estimating Soil Water Retention Characteristics from Particle Size Distribution, Organic Matter Percent and Bulk Density, Water Resources Research 15(6):325–339Google Scholar
  12. McKee CR, Bumb AC (1987) Flow-testing coalbed methane production wells in the presence of water and gas. In: SPE Formation Evaluation, December, pp 599–608Google Scholar
  13. Reddi LN, Poduri R (1997) Use of Liquid Limit State to Generalize Water Retention Properties of Fine-Grained Soils, Geotechnique 47(5):1043–1049CrossRefGoogle Scholar
  14. Soil Vision User’s Guide (Version 1.2) (1997) [Computer Software], Saskatoon, Saskatchewan, Canada, Soil Vision System, LtdGoogle Scholar
  15. Tomasella J, Hodnett MG (1998) Estimating Soil Water Retention Characteristics from Limited Data in Brazilian Amazonia, Soil Science, 163(3):190–202CrossRefGoogle Scholar
  16. Vanapalli SK, Fredlund DG, Pufahl DE (1996) The Relationship Between the Soil–Water Characteristic Curve and the Unsaturated Shear Strength of a Compacted Glacial Till, Geotechnical Testing J 19(3):259–268CrossRefGoogle Scholar
  17. Van Genuchten MT (1980) A Closed-Form Equation for Predicting the Hydraulic Conductivity of Unsaturated Soils, Soil Sci Soc Am J 44:892–898CrossRefGoogle Scholar
  18. Visser WC (1969) An Empirical Expression for the Desorption Curve, Water in the Unsaturated Zone:329–335Google Scholar
  19. Williams J et al. (1983) The Influence of Texture, Structure and Clay Mineralogy on the Soil Moisture Characteristic, Australian J Soil Res 21:15–23CrossRefGoogle Scholar
  20. Zapata CE (1999) Uncertainty in Soil–Water Characteristic Curve and Impact on Unsaturated Shear Strength Predictions. Ph.D. Thesis, Arizona State University, Tempe, United StatesGoogle Scholar
  21. Zapata CE, Houston WM, Houston SL, Walsh KD (2000) Soil-water characteristic curve variability. In: Shackleford CD, Houston SL, Chang N-Y (eds) Advances in Unsaturated Soils, Geotechnical Special Publication No. 99, Reston, ASCE: 84–124Google Scholar

Copyright information

© Springer-Verlag 2007

Authors and Affiliations

  • Navid Ganjian
    • 1
  • Yadollah Pashang Pisheh
    • 2
  • Seyed Majdeddin Mir Mohammad Hosseini
    • 2
  1. 1.University of TehranIran
  2. 2.AmirKabir UniversityIran

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