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Home > Archives > Volume 20, No 11 (2022) > Article

DOI: 10.14704/nq.2022.20.11.NQ66223

STABILIZATION OF BLACK COTTON SOIL USING PLASTIC GRANULES AND WOOD ASH

A.Reshma,Ch.Shivanarayana

Abstract

Due to its high compressibility, low shear strength, and high permeability, expansive soil presents a concern while building highways and other civil engineering projects. In these circumstances, the method of altering the soil's qualities through the blending of various foreign components is known as "soil stabilisation." In this work, wood ash and plastic are used to enhance the engineering qualities of black cotton soil. Additionally, it does away with the necessity for a place to store extra materials. ThisProject major objective is to measure the advantages of stabilising a black cotton soil in terms of its engineering features. Two stages of the investigation were completed. In the first phase, the geotechnical characteristics of the soil were ascertained without the addition of any additives (control experiment), and in the second phase, different percentages of additives were added (test experiment). To stabilise the soil while the following tests (Atterberg's limit, Specific gravity, UC strength, vane shear, Compaction, and California Bearing Ratio) were run on the stabilised soil, wood ash and plastic were added to the soil sample in varied amounts (To the weight of sample).The use of plastic granules in place of wood ash has not only successfully reduced overall swelling but also significantly increased the soil's CBR value. The addition of wood ash and plastic granules to the pavement subgrade has reduced the thickness of the individual layers.

Keywords

Black cotton soil, stabilization, wood ash, plastic granules and California bearing ratio.

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