Conclusion
(i) Based on the index properties, the soil sample was classified to be A-7-5 in the AASHTO rating and in the Unified Soil Classification System, the soil sample was CH respectively, also, on the basis of the chemical composition of the soil, the soil samples was classified as laterite. Chemical composition of RHA showed that it was pozollan;
(ii) The addition of the RHA improved soil sample’s properties, the addition of cement further improved the properties of the soil;
(iii) There are optimum amounts (RHA and Cement) of additives for effectively stabilizing the soil sample;
(iv) The ANN models developed can adequately predict the CBR values of cement-treated A-7-5 soil stabilized with Rice husk ash (RHA).