Abstract
The effect of lime treatment on the engineering properties of soil was investigated by comparing the physical properties, strength, compressibility, and swelling potential of natural and lime treated expansive soils. Test results indicated that addition of lime increased the valency of absorbed cations associated with cation exchange phenomenon and decreased plasticity. Significant reduction in the swell potential and compressibility of the lime treated soils was obtained. Scanning electron microscope (SEM) was used to bring out the qualitative changes occurring in the microstructure of the lime treated soils. Lime treatment produced a soil with a more open fabric and less water absorption potential. Lime treatment has tremendous potential as an economical method for soil stabilization.
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