Laboratory investigation of the effect of cyclic wetting and drying on the behaviour of an expansive soil
By A. R. Estabragh, B. Parsaei, A. Javadi. 2015
161 citations recorded by the source corpus.
Abstract The behaviour of an expansive soil was studied through a number of experiments involving cycles of wetting and drying. Laboratory tests were conducted on compacted samples of an expansive soil (a mixture of bentonite and kaolin, CH) in a modified oedometer under different constant surcharge pressures. The void ratio and water content of samples were determined at different stages. The results show that the swelling–shrinkage was reversible after the soil reached the equilibrium condition where the deformations were the same and the wetting and drying paths (in the water content–void ratio space) converged to an S-shaped curve. The hysteresis phenomenon was studied through the variation of the void ratio with suction, and the results showed that it diminished gradually with the increase in cycles of wetting and drying. The effect of fabric on the behaviour of soil samples was studied during cycles of wetting and drying. The results show that the samples with lower initial water content (on the dry side of optimum) have more swelling potential than samples with a higher initial water content (on the wet side of optimum).
Subfields: Civil and Structural Engineering, Management, Monitoring, Policy and Law
View Paper: https://www.semanticscholar.org/paper/9344bf111eb8b1f0de4997e7a26d2c8f3d253899
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In Civil and Structural Engineering
Citations in the corpus
- Swelling Potential of a Stabilized Expansive Soil: A Comparative Experimental Study (2017, methodology): “At equilibrium condition, the micro-structure becomes even more uniform in nature, thus ensuring lesser water adsorption resulting in lesser swelling (Zhang et al. 2006; Estabragh et al. 2015).”
- Volume changes and mechanical degradation of a compacted expansive soil under freeze-thaw cycles (2019, background): “Previous studies have mainly focused on the effect of wet–dry cycles on the cracking, mechanical, swell–shrink and hydro–mechanical behavior of expansive soils (Alonso et al., 2005; Cui et al., 2002; Cuisinier and Masrouri, 2005; Estabragh et al., 2015; Rosenbalm and Zapata, 2016), and the behavior ”