• S.Siva Gowri Prasad
• P.V.V. Satyanarayana

In recent years stone columns are being mostly used for the improvement of soft clays, loose sands and silty soils mainly for the flexible pavements like oil storage tanks, embankments etc. which can allow some settlements. Stone columns increase the process of consolidation by acting as vertical drains. Sometimes, Stone columns itself may not give sufficient load bearing capacity due to the insufficient lateral confinement offered by the surrounding soils. In such cases, these stone columns may be reinforced with suitable geosynthetic material. Stiffness of geosynthetic and angle of internal friction of stone column material gives a better understanding of the physical performance of the clay bed. In this study, the behavior of soft marine clay improved with end bearing stone columns was experimentally investigated and analyzed. This stone column was made with Silica-Manganese slag and Sand and was reinforced with lateral geotextile circular discs placed at a spacing of D (5cm) where D is the stone column diameter. The results indicate that the stone column improves the strength of soil and have significant influence on the load bearing capacity of the soil. The results also showed that the settlement was reduced considerably by introducing the reinforcement and also with increasing the embedment length.

Geotextile, Marine clay, Silica-Manganese slag, Stone column, Load carrying capacity

"Soft Soil Improvement by Using Stone Columns Reinforced with Lateral Geotextile Discs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 12, page no.8-13, December-2018, Available :http://www.jetir.org/papers/JETIR1812903.pdf

"Soft Soil Improvement by Using Stone Columns Reinforced with Lateral Geotextile Discs", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 12, page no. pp8-13, December-2018, Available at : http://www.jetir.org/papers/JETIR1812903.pdf