A study of geotechnical properties on high and intermediate - compressible clay stabilized with eco-sand

Abstract

The most of the clayey soils are problematic for various construction tasks because their susceptibility to fluctuations in moisture content which can drive up construction expenses. Such soils can make it challenging to work for the construction projects. To solve this problem, we should change the clay's characteristics by blending the suitable admixture for producing the stabilized material. Eco-sand is one of such stabilizing admixture which is generated from a cement Industry as a by-product, produced an amount of 1100 tonnes per 20 hrs. In this study, the two different types of clayey soils are used such as high compressible clay (CH) and Intermediate compressible clay (CI). They were blended with varying amounts of eco-sand, such as 10%, 20%, 30%, 40%, and 50%, respectively. The optimum percentage of eco-sand is derived from conducting the various tests on engineering properties on clay mixes namely unconfined compression tests with different curing intervals, dispersion studies, durability studies and hydraulic properties. Based on the results of the aforementioned experimental tests, the optimal percentage of eco-sand is determined to be 40% for clay with a high compressibility and 20% for clay with an intermediate compressibility.