Effects of Palm Kernel Shell Ash on Lime-Stabilized Lateritic Soil

Nnochiri, E. S. and Ogundipe, O. M. and Oluwatuyi, Opeyemi E. (2017) Effects of Palm Kernel Shell Ash on Lime-Stabilized Lateritic Soil. Slovak Journal of Civil Engineering, 25 (3). pp. 1-7.

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Abstract

The research investigated the effects of palm kernel shell ash (PKSA) on lime-stabilized lateritic soil. Preliminary tests were performed on three soil samples, i.e., L1, L2 and L3 for identifi- cation; the results showed that L1 was A-7-6, L2 was A-7-6, and L3 was A-7-6. The optimum amount of lime for each of the soil samples was achieved. The optimum amount for L1 was 10%, for L2, 8% and for L3, 10%; at these values they recorded the lowest plasticity indexes. The further addition of PKSA was per- formed by varying the amount of PKSA and lime added to each of the soil samples. The addition of 4% PKSA+ 6% lime, the ad- dition of 4% PKSA + 4% lime, and the addition of 4% PKSA + 6% lime increased the California Bearing Ratio (CBR) to the highest values for L1, L2 and L3 from 8.20%. It was concluded that PKSA can be a suitable complement for lime stabilization in lateritic soil.

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