Green Global
Foundation   Journal
...an emerging window for scientific research and publication across the globe

CHEMICAL STABILIZATION OF A LOW PLASTICITY NATURAL SOIL (Pages : 1 - 7)

It is recognized that the chemical soil stabilization by lime and/or cement, offers a comprehensive, economical and technically advanced solution for many earthworks applications. Better understanding the performances of low plasticity soils, when binders are used simultaneously, remains a challenging issue. The present investigation concerns the stabilization of a natural soil, obtained from a site situated on the Eastern layout of the East-West Algerian highway project. In order to ensure the pavement stability and durability, it was decided to re-use this soil, after treatment, for the construction of the working plat-form. Proctor compaction tests and CBR tests were performed, to find out the necessary binders as type and proportions, and their eventual effects on the variation of the optimum water content, the dry density and the mechanical strength. The results show that the optimum water content is more sensitive to the amount of lime used in the mixture, the lime fixation point found is around 3% for the soil considered, which is in good agreement with previous researches. Simultaneous use of binders, with respect to an optimum mixing protocol (3% of lime with 10% of cement), enhances considerably the mechanical properties of the soil considered, by further reducing its plasticity and increasing its CBRindex up to 6 times. Download