The influence of chloride salts on compressibility behaviour of lime-treated organic clay

Abstract

Previous studies have shown that the compressibility behaviour of lime-treated organic clay with varying humic acid contents were not effective as time prolonged. Therefore, chloride salts in the amounts of 0.5%, 2.0% and 5.0% were introduced in conjunction with lime-treated organic containing 1.5% humic acid content to assess the influence of salts on the improvement of compressibility behaviour of lime-treated organic clay. The compressibility behaviour of lime-treated organic clay with varying amounts of chloride salts was studied at different curing periods. The influence of the chloride salts on the lime-clay reactions was analysed in terms of changes in void ratio (e), volumetric strain (e1), compression index (Cc), and coefficient of consolidation (cv) which defines a soil's compressibility. The addition of chloride salts to the lime-treated organic clay shows less compressible behaviour in the long term as evidenced by the oedometer tests. The results confirm the effectiveness of salt in lime-treated organic clay. The influence of chloride salts on compressibility behaviour of lime-treated organic clay.