Comparison of Lime, Cement and CBR PLUS Additives for Stabilizing Clay Coil

Document Type : Scientific - Research

Abstract

Due to its swelling and losing strength potential, clay is considered to be a problematic soil in highway pavement. However, in many regions, clays constitute the main body of pavement subgrade. One traditional solution for the problem caused by the clays is their stabilization using additives. The main factors affecting on the selection of the type of additive is its effect on the physical and mechanical properties of the soil to achieve the objectives of the stabilization. This paper describes the results of an experimental study, in which the effects of three different stabilizers of lime, cement and CBR PLUS, which is a Nano polymer, on a type of clay soil have been investigated. Different amount of each stabilizers have been added to the soil, and the properties of Atterburg limits, compaction, California Bearing Ratio in dry and saturated conditions, uniaxial compressive strength and permeability of the stabilized soil have been evaluated. The results show that the CBR PLUS is more effective than the other stabilizers on the plasticity index and permeability. Also, it is found that the highest strength is achieved by cement, and the highest ratio of saturated to dry CBR is obtained by lime.

Keywords


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