Predicting Compaction Parameters of Silty Soil by Nonlinear Multivariable Approach

Abstract

AbstractThe compaction parameters viz. optimum moisture content (OMC) and maximum dry density (MDD) plays a vital role in finding solutions for various geotechnical problems. These include amount of compaction energy required in pavement/embankment, strength parameters determination, reduction of soil’s susceptibility to settlement, etc. In the present study, an attempt was made to predict compaction parameters of silty soil by nonlinear multivariable approach. For developing the prediction model, various index properties of soil from the available literature were used in the present study. The properties used for the analysis were percent fines, specific gravity (G), liquid limit (LL), and plastic limit (PL). The coefficients of mathematical model were calculated for different combinations of silty soil viz. low plasticity silt, medium plasticity silt, high plasticity. Moreover, the prediction result from all combined silty soil model was found to be more practicable as its regression coefficient was calculated significantly higher for OMC and MDD.KeywordsOMCMDDPlasticityRegressionNonlinearMultivariable approach