To investigate the water retention characteristics of weak expansive soil, the full suction range was determined for soil samples with different initial void ratios prepared according to the slurry consolidation method. Differences in water retention characteristics between samples prepared using slurry consolidation methods and those prepared using compaction in a previous study were investigated. The results indicate that the sample prepared by slurry consolidation exhibited a lower air-entry value, faster dehydration rate, and lower residual water content. Here, an equation describing volume change under suction and a soil-water characteristic curve equation characterized by saturation with volume change have been established based on the laws governing changes in suction and the Fredlund-Xing model.
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References
B. C. Zhou, L. W. Kong, and Q. G. Ma, “Effects of moisture and density states on unsaturated shear strength of compacted expansive soil,” Rock Soil Mech., 38, 240-246 (2017).
A. M. Al-Mahbashi and T. Elkady, “Unsaturated shear strength prediction of highly expansive soil,” Proc. 6th International Conf. Unsat. Soils Res. Appl., Sydney, 2 (2014).
B. C. Zhou and L. W. Kong, “Effect of volume changes on soil-water characteristics of unsaturated expansive soil,” J. Hydraul. Eng., 42, 1152-1160 (2011).
X. Zhu, “Mechanical and hydrological behaviors and soil-structure interface shear properties of expansive soil reconstituted from slurry,” Ph.D. thesis, Zhengzhou University, Zhengzhou, China (2018).
S. J. Wheeler, R. S. Sharma, and M. S. R. Buisson, “Coupling of hydraulic hysteresis and stress-strain behaviour in unsaturated soils,” Geotechnique, 53, 41-54 (2003).
D. Sheng, D. G. Fredlund, and A. Gens, “A new modelling approach for unsaturated soils using independent stress variables,” Can. Geotech. J., 45, 521-534 (2008).
S. Salager, M. S. El Youssoufi, and C. Saix, “Definition and experimental determination of a soil–water retention surface,” Can. Geotech. J., 47, 609-622 (2010).
D. G. Fredlund and A. Q. Xing, “Equations for the soil-water characteristic curve,” Can. Geotech. J., 31, 521-532 (1994).
E. C. Leong and H. Rahardjo, “Review of soil-water characteristic curve equation,” J. Geotech. Geoenviron. Eng., 123, 1106-1117 (1997).
D. Gallipoli, S. J. Wheeler, and M. Karstunen, “Modelling the variation of degree of saturation in a deformable unsaturated soil,” Geotechnique, 53, 105-112 (2003).
S. Salager, M. S. El Youssoufi, and C. Saix, “Definition and experimental determination of a soil–water retention surface,” Can. Geotech. J., 47, 609-622 (2010).
W. S. Sillers, D. G. Fredlund, and N. Zakerzaheh, “Mathematical attributes of some soil–water characteristic curve models,” Geotech. Geol. Eng., 19, 243-283 (2001).
E. E. Alonso, A. Gens, and A. Josa, “A constitutive model for partially saturated soils,” Geotechnique, 40, 405-430 (1990).
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Translated from Osnovaniya, Fundamenty i Mekhanika Gruntov, No. 2, p. 14, March-April, 2021.
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Lv, M., Li, Y. & Guo, Y. Water Retention Characteristics and Soil-Water Characteristic Curve Model of Weak Expansive Soil. Soil Mech Found Eng 58, 123–129 (2021). https://doi.org/10.1007/s11204-021-09716-0
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DOI: https://doi.org/10.1007/s11204-021-09716-0