EXPERIMENTAL STUDIES ON LATERITE SOIL STABILIZED WITH CEMENT AND AGGREGATE

SunkaraYashwant, B. Someswara Rao, G. Venkata Rao

Abstract: The subgrade must be able to support loads transmitted from pavement structure without excessive deformation under adverse climatic and traffic conditions to increase the life of the pavement. It is a well known fact that, all soils do not possess all the desirable qualities for using it as good quality pavement material. When such soils cannot be replaced, its subgrade performance should be increased by several modification techniques. The place where ground water table is high, the strength of subgrade is adversely affected by moisture infiltration to subgrade and base due to capillary action. The purpose of this paper is to evaluate the use of low contents of cement and aggregate in the modification of a lateritic soil properties concerning the behavior of mixtures to use in the base construction. In the present study an effort is made to obtain the optimum dosage of cement for stabilization of locally available lateritic soil. The study incorporates investigations on basic properties of soil. Then the investigations are carried out to study the effect of addition of 10 mm down aggregates to the soil properties added in addition to the obtained optimum cement content to evaluate the extent of modification on MDD, OMC and CBR of the soil. The experimental investigations shown that there is a tremendous increase in the CBR value of the soil treated with cement-aggregate modification. After conducting all the tests see whether it’s strength is suitable for base coarse. In addition, the field cost analysis is also made to compare the cost of construction for various modifications used.

Keywords: lateritic soil 1, Cement 2, Aggregates3, Stabilization4 and CBR5

DOI: https://doi.org/10.15623/ijret.2015.0408033