Effect of Saline Water on Consolidation Behavior of Reconstituted Clay
Keywords:
Consolidation, Reconstituted Clay, Saline Water, Coefficient of PermeabilityAbstract
Objective: This study presents the evaluation of the effect of saline concentration on the consolidation behavior of reconstituted clay in Nakhon Ratchasima Province.
Method: The saline water was the sodium chloride (NaCL) solution at 0.5, 1.0, and 1.5 M was used as pore fluid. The clay was reconstituted by mixing with distilled water and saline water at the anticipated concentrations. The 1-D consolidation test and soil consistency limit were performed to evaluate the effect of saline water. The initial water content for consolidation samples was desired at 1.5-2.0 times their liquid limit.
Results: The result showed that the increase in the concentration of saline water caused the decrease of liquid limit while the concentration of saline water had a marginal effect on the plastic limit. The coefficient of consolidation (Cv) increased when saline water was as pore fluid. The linear relationship was found in the void ratio versus the logarithm of effective vertical stress. The compression index (Cc) decreased with increasing saline water concentration. The permeability increases with the increased concentration of saline water compared to the same void ratios. The normalization by the void ratio at the liquid limit indicated that all clay with saline water as a pore fluid fit a unique permeability relationship
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