Soil Stabilization with Fly ash and Industrial Waste

Abstract

In this present work, it is aimed at developing a new building material from the lime scrap, an industrial The objective of this paper is to upgrade expansive soil as a construction material using industrial waste and fly ash, which are waste materials. Remolded expansive clay was blended with industrial waste and fly ash and strength tests were conducted. The potential of industrial waste -fly ash blend as a swell reduction layer between the footing of a foundation and sub grade was studied. In order to examine the importance of the study, a cost comparison was made for the preparation of the sub-base of a highway project with and without the admixture stabilizations. Stress strain behavior of unconfined compressive strength showed that failure stress and strains increased by 106% and 50% respectively when the fly ash content was increased from 0 to 25%. When the industrial waste content was increased from 0 to 12%, Unconfined Compressive Stress increased by 97% while CBR improved by 47%. Therefore, an industrial waste content of 12% and a fly ash content of 25% are recommended for strengthening the expansive sub grade soil. A fly ash content of 15% is recommended for blending into industrial waste for forming a swell reduction layer because of its satisfactory performance in the laboratory tests.