Effect of cement grain size on the geotechnical properties of stabilized clay

Abstract

In this study, some geotechnical properties of Microfine Portland Cement (MPC) and Portland Cement (PC) stabilized High Plasticity Clayey Soil (HPCS) samples were investigated. The results showed that liquid limit, permeability, swelling potential, and compressibility of HPCS were reduced, and HPCS's plastic limit and Unconfined Compressive Strength (UCS) were increased by both MPC and PC stabilizations. Besides, liquid limit, permeability, swelling potential, and compressibility of HPCS were further reduced by MPC. Although dry UCS of MPC stabilized HPCS sample was almost the same as that of PC stabilized HPCS sample, the plastic limit and wet cured UCS of MPC stabilized HPCS sample were higher than those of wet cured UCS of PC stabilized HPCS sample. In general, as the size of cement particles becomes finer, the stabilization of HPCS becomes more effective. (C) 2019 Sharif University of Technology. All rights reserved.