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Experimental Investigation for Stabilization of Expansive Soil by Using Waste Materials—Brick Dust and Eggshell Powder
Unfavorable for civil engineers, expansive soil poses challenges due to its limited structural integrity and repetitive swelling and shrinking tendencies. Therefore, it is advisable to take strengthening measures before constructing any structure on expansive soil. In this research, we explored the use of eggshell powder and brick dust as stabilizers to modify expansive soil, replacing commercial lime. A total of 24 groups of stabilized soil samples were prepared by incorporating varying proportions of eggshell powder and brick dust as stabilizers. With respect to the dry soil, eggshell powder was added at weight ratios of 6, 9, 12, and 15%, while brick dust was added at weight ratios of 4, 6, 8, and 10%. Eggshell powder and brick dust improved expansive soil’s engineering properties by enhancing cohesion through the lime content in the eggshell powder, which affects moisture content via cation exchange, leading to soil particle cementation. The optimal mixture is found at 12% eggshell powder, where the liquid limit drops from 57.06 to 47.51%. Additionally, incorporating 10% brick dust results in a significant decrease in the soil’s plasticity index, declining from an initial 24.09–15.35. The combination of 15% eggshell powder with 10% brick dust yields the smallest shrinkage limit value of 6.44, emphasizing the significance of the combined effect of these admixtures in stabilizing expansive soil. Additionally, both eggshell powder and brick dust concentrations have a clear impact on the free swell index, with increasing concentrations leading to a decrease in swelling potential. These findings highlight the effectiveness of both eggshell powder and brick dust in mitigating soil swelling.
Experimental Investigation for Stabilization of Expansive Soil by Using Waste Materials—Brick Dust and Eggshell Powder
Unfavorable for civil engineers, expansive soil poses challenges due to its limited structural integrity and repetitive swelling and shrinking tendencies. Therefore, it is advisable to take strengthening measures before constructing any structure on expansive soil. In this research, we explored the use of eggshell powder and brick dust as stabilizers to modify expansive soil, replacing commercial lime. A total of 24 groups of stabilized soil samples were prepared by incorporating varying proportions of eggshell powder and brick dust as stabilizers. With respect to the dry soil, eggshell powder was added at weight ratios of 6, 9, 12, and 15%, while brick dust was added at weight ratios of 4, 6, 8, and 10%. Eggshell powder and brick dust improved expansive soil’s engineering properties by enhancing cohesion through the lime content in the eggshell powder, which affects moisture content via cation exchange, leading to soil particle cementation. The optimal mixture is found at 12% eggshell powder, where the liquid limit drops from 57.06 to 47.51%. Additionally, incorporating 10% brick dust results in a significant decrease in the soil’s plasticity index, declining from an initial 24.09–15.35. The combination of 15% eggshell powder with 10% brick dust yields the smallest shrinkage limit value of 6.44, emphasizing the significance of the combined effect of these admixtures in stabilizing expansive soil. Additionally, both eggshell powder and brick dust concentrations have a clear impact on the free swell index, with increasing concentrations leading to a decrease in swelling potential. These findings highlight the effectiveness of both eggshell powder and brick dust in mitigating soil swelling.
Experimental Investigation for Stabilization of Expansive Soil by Using Waste Materials—Brick Dust and Eggshell Powder
Lecture Notes in Civil Engineering
Agnihotri, Arvind Kumar (editor) / Reddy, Krishna R. (editor) / Bansal, Ajay (editor) / Ete, Marjom (author) / Mishra, Moni (author) / Mekro, Ravino (author) / Jamir, Lensar (author) / Oniya, Taniya (author) / Rigia, Jeelek (author) / Kalita, Ajanta (author)
International Conference on Environmental Geotechnology, Recycled Waste Materials and Sustainable Engineering ; 2023 ; Jalandhar, India
2024-08-21
11 pages
Article/Chapter (Book)
Electronic Resource
English
Reutilization of Eggshell Powder for Improvement of Expansive Clayey Soil
Springer Verlag | 2023
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