Effect of common salt on some engineering properties of eggshell stabilized lateritic soil

This paper studied the effect of common salt on the compaction and California Bearing Ratio (CBR) properties of eggshell stabilized lateritic soils with a view of obtaining a good compliment for eggshell as a useful stabilizer for road works. Classification and consistency tests were performed on the soil samples which were also subjected to compaction and CBR tests. Stabilization was performed at optimum eggshell and with 2, 4, 6, 8, and 10% of common salt. The addition of common salt reduced the Plastic Indices (PI) of the samples. The values reduced from 14.82, 11.11 and 7.99% to 8.03, 1.25 and 1.23% in samples A, B and C respectively. Maximum Dry Density (MDD) increased from 1995 to 2140 kg/m³ and 2000 to 2110 kg/m³ in samples B and C respectively. The unsoaked CBR values also increased from 34.78 to 50.99 kN/m², 15.64 to 28.89 kN/m² and 27.31 to 34.20 kN/m² at optimum stabilization in samples A, B and C respectively. The result showed that the addition of common salt improved the compaction and CBR characteristics of eggshell stabilized soils.