Effect of Soil Stabilization Using Cement, Cement Kiln Dust, and L.C.S.S. on Rigid Pavement Design

Abstract

The main objective of this research is to study the effect of stabilizing the soil, which classified as A-2-4 according to AASHTO soil classification system, with Ordinary Portland Cement (í µí±‚í µí±ƒí µí° ¶), Cement Kiln Dust (í µí° ¶í µí°¾í µí°·) and a new Liquid Chemical Soil Stabilizer (í µí°¿í µí° ¶í µí±†í µí±†) on the flexible pavement structural design for many classes of highways in Egypt. í µí° ¶í µí°¾í µí°· contents were 2%, 4%, 8% and 12% by soil dry weight. Whereas í µí±‚í µí±ƒí µí° ¶ contents were 2%, 4%, 6%, 8%, and 10%. To study the effect of the í µí°¿í µí° ¶í µí±†í µí±†, the same contents of í µí±‚í µí±ƒí µí° ¶ and í µí° ¶í µí°¾í µí°· were used with adding the í µí°¿í µí° ¶í µí±†í µí±†, whose concentration was 1:1000 by volume of water. The resilient moduli of the treated and untreated soil were determined. According to the Egyptian Code for Urban and Rural Highways, the required flexible pavement sections for many classes of highways have been determined. For each case of the treated and untreated soil, the construction cost of one square meter of pavement has been estimated to study the economic feasibility of using í µí±‚í µí±ƒí µí° ¶, í µí° ¶í µí°¾í µí°· and í µí°¿í µí° ¶í µí±†í µí±† as chemical soil stabilizers for flexible pavement construction purposes.