Experimental study on expansive soil using construction and demolition waste
Abhay Pratap singh, Adarsh patel
With the increasing of population and due to high consumption of construction materials the scarcity of land as well as natural construction material causes inflation in the construction market. To counteract the first problem i.e. land demand we have to stabilize poor soil (expansive soil) and for second one we have to use recycled material. As per data of ICAR73.2 million hectares of land area in India are covered with expansive soil. Expansive soils swell when they come in contact with water and shrink when they become dry. Expansive soil offers poor shear strength, high swelling and shrinkage, a great diversity of ground improvement techniques such as soil stabilization and reinforcement are deployed to improve mechanical behavior of soil, thereby enhancing the engineering properties of the soil, such as volume stability, shear strength and durability. In process of soil stabilization and reinforcement, removal or partial replacement of the problematic soil is done with an additive (brick dust and concrete dust). In this study it is demonstrated that the C&D waste has a huge potential in decreasing material use as an additive. By recycling C&D waste, crushed brick dust & concrete dust are used in present study. With various proportions of brick dust additive i.e. 8%, 16%, 24%, 32% & 40% and concrete dust additive i.e. 5%, 10%, 15%, 20% & 25% expansive soils is stabilized. After stabilization of expansive soil in laboratory changes in various soil properties such as Maximum Dry Density, Optimum Moisture Content, and California Bearing Ratio, Unconfined compressive strength was studied.
Article Details
Unique Paper ID: 162291

Publication Volume & Issue: Volume 10, Issue 9

Page(s): 111 - 119
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