Stabilization of dune sand using crushed sand, silt and blast furnace slag for use in road field

Abstract

Soil stabilization is a well-known technique to improve the mechanical properties of soils in road and railway construction by adding a grading corrector and/or hydraulic binders in the soil. In this work, dune treated sand is proposed to be used in pavement layers. For this, a series of tests, including sieve analysis, Proctor compaction, CBR, simple compressive strength, shear strength and compressibility tests are performed to evaluate the effectiveness of the adopted stabilization technique using dune sand, and to determine the optimal mixture for practical purpose. Our results show that for certain mixtures the lift (the CBR index) increases from ∼8% to ∼78% with the increase in resistance.