Abstract
In 2019 Fredlund proposed a procedure for the estimation of the unsaturated soil shear strength function. The procedure used the air-entry value, AEV, (as defines by the drying branch of the degree of saturation Soil-Water Characteristic Curve, S-SWCC), and residual conditions to define distinct limits for the unsaturated shear strength function. It was suggested that these points formed two “anchor points” (or reference points), along the drying S-SWCC. The suitability of these two “anchor points” was verified through comparisons with published laboratory data sets. This paper details a protocol that can be adhered to when using the S-SWCC to estimate a suitable unsaturated shear strength function for geotechnical engineering applications.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Fredlund, D.G., Determination of unsaturated soil property functions for engineering practice, in The 17th African Regional Conference on Soil Mechanics and Geotechnical Engineering. 2019. p. 3–19.
Bao, C.G., B.-w. Gong, and L.-t. Zhan: Properties of unsaturated soils and slope stability of expansive soils. in Proceedings of the Second International Conference on Unsaturated Soils–UNSAT98, Beijing, China. 71–98 (1998)
Thu, T.M., H. Rahardjo, and E.C. Leong: Effects of hysteresis on shear strength envelopes from constant water content and consolidated drained triaxial tests, in Unsaturated Soils 2006. 1212–1222 (2006)
Fredlund, D.G. and A. Xing: Equations for the soil-water characteristic curve. Canadian Geotechnical Journal 31(4): 521–532 (1994)
Tran, D.T., D.G. Fredlund, and D.H. Chan: Improvements to the calculation of actual evaporation from bare soil surfaces. Canadian Geotechnical Journal 53(1): 118–133 (2016)
Escario, V., J. Juca, and M. Coppe: Strength and deformation of partly saturated soils. in Congrès international de mécanique des sols et des travaux de fondations. 12. 43–46(1989)
Vanapalli, S., W. Sillers, and M. Fredlund: The meaning and relevance of residual state to unsaturated soils. in 51st Canadian Geotechnical Conference. sn 4–7(1998)
Vanapalli, S., D. Fredlund, D. Pufahl, and A. Clifton: Model for the prediction of shear strength with respect to soil suction. Canadian Geotechnical Journal 33(3): 379–392 (1996)
Tran, T.P.A. and D.G. Fredlund: Verification of the Fredlund (2019) Unsaturated Shear Strength Function. Geosciences 11(4): 151 (2021)
Acknowledgements
The first author acknowledges the partial support of Hue University under the Core Research Program, Grant No. NCM.DHH.2018.03.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2022 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this paper
Cite this paper
Tran, T.P.A., Fredlund, D.G. (2022). Emerging Technology for Determining Unsaturated Soil Shear Strength. In: Ha-Minh, C., Tang, A.M., Bui, T.Q., Vu, X.H., Huynh, D.V.K. (eds) CIGOS 2021, Emerging Technologies and Applications for Green Infrastructure. Lecture Notes in Civil Engineering, vol 203. Springer, Singapore. https://doi.org/10.1007/978-981-16-7160-9_104
Download citation
DOI: https://doi.org/10.1007/978-981-16-7160-9_104
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-16-7159-3
Online ISBN: 978-981-16-7160-9
eBook Packages: EngineeringEngineering (R0)