Gobinath R, Ganapathy G P, Akinwumi I I, Kovendiran S, Hema S, Thangaraj M (2016) Plasticity, strength, permeability and compressibility characteristics of black cotton soil stabilized with precipitated silica. Mir BA (2014) Some studies on engineering behavior of cement stabilized dredged soil from flood spill channel of Jhelum River Srinagar. Mir BA, Mir FA (2004) Applications and geotechnical evaluation of dredged soil obtained from Dal Lake in Srinagar. Kim YT, Ahn J, Han W J, Gabr MA (2010) Experimental evaluation of strength characteristics of stabilized dredged soil. Jaesung P, Younghwan S, Sookack N, Taeho B (2016) The suitability evaluation of dredged soil from reservoirs as embankment material. Detailed investigation of dredged soil carried out in the laboratory revealed that the addition of 4% of precipitated silica with loose dredged soil improved its shear strength by 42.85% and makes it dense. Desirable results were obtained and the optimum percentage of precipitated silica was derived using the experimental investigations conducted in the laboratory. Dredged soil was collected, dried, pulverized and the basic index and engineering properties tests were carried out by varying the percentage of precipitated silica with respect to the weight of the dredged soil. It is formed by the reaction of an alkaline silicate solution with mineral acid. One of the commonly used high performances thickening agent in chemical industries is precipitated silica. So there is a huge need for improving such soils. Though in abundant, the strength parameter of dredged soil won’t agree with the foundation requirements. The dredged soils when accumulated in large quantities pose a serious threat for disposal and environment all around the world. Dredged soil is a universally known soil waste produced while dredging of lakes, seas, rivers and dams. In this study, it is proposed to improve the dredged soil extracted from Narayanapuram Lake of Chennai using precipitated silica.
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