Stabilization of Expansive Soils Employing Activated Fly Ash

There are about 51.8 million hectares of land in India that are covered with a significant amount of soil (mainly Black Cotton soil). These expansive soils, in general, have the characteristic that when they are dry, they are fairly hard, but when they are wet, they lose all of their strength and become very brittle. This is because water causes the soil to lose its ability to hold together. All expansive soils have this characteristic in common with one another. Because expansive soils have this property, they are the cause of problems all over the world and present a challenge to geotechnical engineers who are tasked with finding solutions to these issues. The expansive nature of expansive soils makes it difficult for geotechnical engineers to do their jobs. Soil stabilization is often utilized for paving roads and creating the foundations of structures, making it one of the most important aspects of building construction. It is also considered to be one of the most important aspects of building construction. This form of stabilization regime strengthens the engineering qualities of the soil, such as the soil's volume stability, strength, and durability. As a result, this is why the situation is as it is. As a direct consequence of this, the circumstance is now in this state. At this point, the problematic soil is either removed totally or excavated and replaced with a new material of greater quality. If it is excavated, the problematic soil is replaced with material of higher quality. If the problematic soil cannot be removed, the soil in issue is either given a treatment with an additive or taken out entirely. Fly ash was collected from Sesa Sterlite in Jharsuguda, which is located in the state of Odisha in India. This fly ash was then used in the continuing research project to try to stabilise black cotton soil that was taken from Nagpur. The Sesa Sterlite factory in Jharsuguda was the source of this fly ash that was acquired. Expansive soils may be made more stable by putting this addition in the soil at a number of different concentrations, such as 10%, 20%, 30%, 40%, and 50%, respectively. The plasticity index (P.I.) of clay-fly ash mixtures shows a drop in value as the quantity of fly ash increases. This is because fly ash does not have any plastic characteristics of its own, hence the index value decreases. This is because fly ash does not possess any characteristics that are associated with plastic. In conclusion, the incorporation of fly ash into expansive soil lessens the soil's capacity for movement while at the same time enhancing the soil's capacity for manipulation. This is because the addition of the fly ash modifies both the particle size and the colloidal reaction of the soil, which leads to the occurrence of the aforementioned effect. Clay mixtures that included fly ash were placed through a series of wet and dry tests to evaluate their coefficients of frictional resistance (CBR). The results of these tests were analysed, measured, and compared to one another to arrive at their respective values. An investigation into the previously observed result suggests the possibility of using fly ash as an additive that has the potential to be employed for the purpose of boosting the engineering features of expansive soils. This possibility was suggested by the investigation into the previously observed resultIJSRED - International Journal of Scientific Research and Engineering Developmen