Compressive strength and microstructure evolution of lime-treated silty soil subjected to kneading action

Hydromechanical and Pore-Structure Evolution in Lime-Treated Kneading Compacted Soil

“…Correspondingly, cylindrical specimens of length and diameter, each of 0.05m, were prepared by kneading compaction, i.e., the same l/d ratio was maintained with the field sampled soil. The kneading compaction was performed by a laboratory-developed kneading tool, which was reported in the study of Das et al (2021). During the application of kneading compaction, specimens were kneaded by rotation of the 3-kneading feet at an angle of 45° between 2 successive loadings.…”

“…A dynamic load corresponding to the compaction energy as per the ASTM D698-91 (ASTM 2012) was applied. The process of kneading compaction is similar to the one mentioned by Das et al (2021). Nine specimens were prepared, of which 3 were untreated, and 6 were lime-treated soils.…”

“…In this context, improvement of the engineering properties of natural soil by chemical stabilization using lime was shown to be an efficient and effective process (Bell 1996;Little 1995). In addition to chemical stabilization, mechanical improvement, which involves the implementation of control mixing and compaction conditions by incorporating appropriate water content, binder amount, compaction energy, and compaction mechanism, was also important (Das et al 2020(Das et al , 2021Le Runigo et al 2009, 2011Makki-Szymkiewicz et al 2015).…”

“…The present literature provides several laboratories (Bell 1996;Das et al 2021) and few field studies evidencing the improvement brought in the soil through lime treatment. One such field study was recently reported by Das et al (2020).…”

“…Recently, Das et al (2021) demonstrated the importance of undergoing kneading compaction of lime-treated soil by showing the contribution of kneading action towards long-term strength evolution. Thus, it becomes important to undergo further studies on the lime-treated kneaded soil and to investigate the relevancy between laboratory and field obtained results.…”