A LABORATORY STUDY ON IMPROVING THE PROPERTIES OF THE MARINE CLAY USING SEASHELL POWDER AND FERRIC CHLORIDE TO SUITE IT AS A SUBGRADE FOR FLEXIBLE PAVEMENTS
Keywords:
Marine Clay, Seashell Powder, Ferric Chloride (Fecl3), Maximum Dry Density (MDD), Optimum Moisture Content (OMC), California Bearing Ratio (CBR).Abstract
Transportation is the artery through which Indian economy grows. For the sake of Transportation, roads play vital role, for this there is a need of well-prepared pavements to bare all moving vehicular loads. In India, The available costal corridor is of 7516.6 km. This coastal region mostly consists of marine clay deposits. Using locally available soils and materials for the construction of roads is more economical. But in coastal region, using marine clay (locally available soil) as sub grade will not yield desirable results due to its poor engineering properties. Replacement of the soil is not economically feasible as it increases the cost of the project. As the coastal region
consists of huge quantity of sea shells which are having high percentage of CaO, hence, grinded sea shells (Seashell Powder) can be used as stabilizing material. In the present study, under controlled conditions, sea shell powder as an admixture and ferric chloride as an additive are used to enhance the engineering properties of marine clay to suit it as the sub grade for flexible pavements.
