• Melissa Marian Ninan
• Shyla Joseph A.

Red mud is the fine-grained residue left after the extraction of alumina from bauxite ore. At present, in India about 10 million tons of red mud residue are being generated annually posing very serious and alarming environmental problems. This study seeks to evaluate the possibility of red mud application in landfill liners. Landfill liners are provided to prevent the leachate movement into underground water. This paper seeks the use of Red mud – Soil mixture as liner material for the dump yard site. In this study, various percentages of soil and red mud are added and optimum mix is found out. Geotechnical tests include determination of Atterberg limits, compaction test, permeability test, triaxial test and free swell index test. Hydraulic conductivity of soil sample is found to decrease from 2.16 x 10-4 cm/s to 9.12 x 10-8 cm/s by the addition of 50 to 90% red mud respectively. Plasticity index is found to decrease from 25 to 14% when 50% red mud is added which complies with liner requirement. From the above results, it can be concluded that red mud can be effectively utilized as a liner material. Red mud being alkaline in nature, it can be used to prevent acidic contamination of soil.

Red mud, Hydraulic conductivity, Plasticity

"Suitability of Red mud – Soil liner", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.408-410, May 2019, Available :http://www.jetir.org/papers/JETIRCV06088.pdf

"Suitability of Red mud – Soil liner", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp408-410, May 2019, Available at : http://www.jetir.org/papers/JETIRCV06088.pdf