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Experimental Studies on the Influence of Chemicals on Geotechnical Properties of Black Cotton Soil in Puducherry Region
Generally, black cotton soils are shrinking and swelling due to changes in water content. In India, this soil is named expansive soil. The swell–shrink behavior of expansive soils causes extensive problems to the substructure and distress in the infrastructures such as buildings, pavements of breast walls. Understanding the performance of black cotton soil and adopting suitable control measures have been significant work for geotechnical engineers. The present study examines the effectiveness of chemicals used to improve the engineering characteristics of black cotton soil (LL = 103%, SL = 1.82%) collected from a location in Puducherry, India. An experimental program has evaluated the effects of alccofine-1203 (3, 6, 9, and 12%) and magnesium chloride (MgCl2) (0.25, 0.5, 0.75, and 1%) contents on the Index, strength properties, pH, EC, and cation-exchange capacity (CEC) characteristics of black cotton soil. Both admixtures were added individually and mixed with the combination of these two admixtures to the untreated soil. The results showed that the combined action of 9% alccofine-1203 + 0.75% MgCl2 increased the dry density and unconfined compressive strength of soil while decreasing the liquid limit, Plasticity Index, and swelling properties. However, further increasing the addition of alccofine and MgCl2 results in a decrease in the unconfined compressive strength. Thus, it proves that by adding the admixture, the problematic soil has turned into the best one, with the addition of 9% alccofine and 0.75% magnesium chloride, which exhibited a significant stabilizer on a high swell, high shrink, and low bearing capacity soil.
Experimental Studies on the Influence of Chemicals on Geotechnical Properties of Black Cotton Soil in Puducherry Region
Generally, black cotton soils are shrinking and swelling due to changes in water content. In India, this soil is named expansive soil. The swell–shrink behavior of expansive soils causes extensive problems to the substructure and distress in the infrastructures such as buildings, pavements of breast walls. Understanding the performance of black cotton soil and adopting suitable control measures have been significant work for geotechnical engineers. The present study examines the effectiveness of chemicals used to improve the engineering characteristics of black cotton soil (LL = 103%, SL = 1.82%) collected from a location in Puducherry, India. An experimental program has evaluated the effects of alccofine-1203 (3, 6, 9, and 12%) and magnesium chloride (MgCl2) (0.25, 0.5, 0.75, and 1%) contents on the Index, strength properties, pH, EC, and cation-exchange capacity (CEC) characteristics of black cotton soil. Both admixtures were added individually and mixed with the combination of these two admixtures to the untreated soil. The results showed that the combined action of 9% alccofine-1203 + 0.75% MgCl2 increased the dry density and unconfined compressive strength of soil while decreasing the liquid limit, Plasticity Index, and swelling properties. However, further increasing the addition of alccofine and MgCl2 results in a decrease in the unconfined compressive strength. Thus, it proves that by adding the admixture, the problematic soil has turned into the best one, with the addition of 9% alccofine and 0.75% magnesium chloride, which exhibited a significant stabilizer on a high swell, high shrink, and low bearing capacity soil.
Experimental Studies on the Influence of Chemicals on Geotechnical Properties of Black Cotton Soil in Puducherry Region
Lecture Notes in Civil Engineering
Jose, Babu T. (editor) / Sahoo, Dipak Kumar (editor) / Puppala, Anand J. (editor) / Reddy, C. N. V. Satyanarayana (editor) / Abraham, Benny Mathews (editor) / Vaidya, Ravikiran (editor) / Jaladevi, V. (author) / Murugaiyan, V. (author)
Indian Geotechnical Conference ; 2022 ; Kochi, India
Proceedings of the Indian Geotechnical Conference 2022 Volume 3 ; Chapter: 15 ; 161-173
2024-05-31
13 pages
Article/Chapter (Book)
Electronic Resource
English
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