This paper investigates the parameters affecting the saturated hydraulic conductivity of lime-treated expansive clays. The experimental program accounted for lime content (0%, 4%, and 6%), curing period (7 and 28 days) and confining pressures (15, 30, and 45 kPa). In addition, the effect of accelerating curing on the saturated hydraulic conductivity of lime-treated clay was investigated. Experimental results indicated that the addition of lime resulted in a significant increase in hydraulic conductivity as compared to untreated specimens. Furthermore, the saturated hydraulic conductivity values showed less notable change for specimens with curing period greater than 7 days. Mercury intrusion porosimetry conducted as part of this study provided a clear insight and explanation to experimental observations.
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