Prediction of maximum dry unit weight and optimum moisture content for coarse-grained lateritic soils

Abstract

Proctor method), West African Standard (WAS), and British Standard Heavy (BSH) (equivalent of modified Proctor method). These methods are laborious, time-consuming and material-consuming (Jayan & Sankar, 2015). The shortcomings outlined above together with proof by some earlier authors Ring et al. (1962), Ramiah et al. (1970), Benson et al. (1998) and most recently Anjita et al. ( 2017) that soil type, its grain size distribution, index properties, and specific gravity influence the MDUW and OMC of soils led researchers to develop empirical relationships between MDUW/OMC and index properties of soils. Such index properties as liquid limit (LL), plastic limit (PL), plasticity index (PI), fines content (FC), sand content (S d C) etc. have previously been used.

Comparison of SVR models for predicting the compaction properties of lateritic soils as novel hybrid methods

“…Another research evaluated to develop empirical equations between g dmax and w opt with logarithm of compaction energy and sand content ratio for lateritic soils. The errors of this method are within the allowable range of g dmax and w opt parameters, so this shows that this method is very acceptable [28]. Another study applied two types of SVR models (using polynomial (SVM-p) and radial basis function (SVM-RBF) as kernel function), random forest regression (RFR), and artificial neural network to estimate the erodibility of an unsaturated soil gathered from an erosion watershed positioned at Amuzukwu, Nigeria.…”