Effect of Ground Granulated Blast Furnace Slag and Fly Ash on Geotechnical Properties of Expansive Soil

Abstract

Expansive soil is the most predominant geological hazard. As they get wet, the clay minerals assimilate water molecules and expand, on the other hand, as they shrink, leaving large voids in the soil which is a significant hazards for further construction stabilization is found to be the most ideal way of reducing shrinkage and swelling nature of expansive soils. In modern days of industrialization, it is essential to utilize waste material from various industries to use for expansive soil to decrease the contaminating impact of waste material and to achieve beneficial outcomes. Likewise, use of Ground Granulated Blast Furnace Slag (GGBS) is served to be a good stabilizing agent for expansive soils and also being a by-product it fills in as an eco-friendly way of using the product without dumping it on ground. In the present study, local fly ash and GGBS are used as a mix to investigate the properties of expansive soil in various proportions. Various laboratory tests such as standard proctor test, unconfined compressive strength, California bearing ratio test are done to figure out the strength characteristics of compacted soil using GGBS and fly ash as well as tests like specific gravity to obtain the physical properties of soil.