AN EXPERIMENTAL STUDY ON THE PERFORMANCE OF THE MARINE CLAY STABILISED WITH SEASHELL POWDER AND SODIUM SILICATE AS A SUBGRADE FOR THE FLEXIBLE PAVEMENTS

D. Koteswara Rao
Professor of Civil Engineering, JNTUK Kakinada, A.P, India. , IN

Ch. Srikanth
Professor of Civil Engineering, JNTUK Kakinada, A.P, India. , IN

Keywords: Marine clay, Sea Shell Powder, Sodium Silicate, MDD, OMC, CBR.

Abstract

Roads are the arteries through which Indian economy grows. India is a country which is having a coastal corridor of 7516.6 kms. This coastal region mostly consists of marine clay deposits. For the construction of roads using locally available materials and soils will be economical. But in coastal region using marine clay (locally available soils) as sub grade will not yield desirable results due to its poor engineering properties. Removing and replacing of this soil is not economically feasible as it increases the budget of the project. In this region, as huge quantity of sea shells which are having high percentage of CaO, can be used as stabilizing material for improving the
properties of soil. In this experimental study, under controlled conditions through laboratory tests, the efficacy with Sea Shell Powder and Sodium Silicate used for improving the properties of marine clay to suit it as sub grade for the flexible pavements has been studied.

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