Characterization Of Ferrochrome Slag As On Embankment And Pavement Materials

Abstract

In  India  as  the  population  of  the  country  gallops towards  alarming  proportions,  the  generation  of  waste  has increased.  Much attention is not imparted towards the development of methods to dispose or make use of the waste generated in a useful manner. in the soils moisture may come from flooding due to rain, leaking water or sewer lines ,and reduction in surface evapo-transpiration when an area is covered by building or a pavement. To improve performance of structures and achieve economy in construction, it is necessary to improve the geotechnical properties of soils. The process of improving the engineering properties of soil and thus making it more stable. It is required when the soil available for construction is not suitable for the intended purpose. It is commonly used to reduce the compressibility and to increase the bearing strength of the sub grade soil. Site feasibility study for geotechnical projects is of far most beneficial before a project can take off. Site survey usually takes place to understand the characteristics of subsoil upon which the decision on location of the project can be made .the improving soil strength and increasing resistance to softening by water through bonding the soil particles together, water proofing the particles or combination of the two. The simplest stabilization processes are compaction and drainage .The other process is by improving gradation of particle size and further improvement can be achieved by adding binders to the weak soils. In the present study tests are carried out in two phases. In the first phase of tests, stone dust is been used as an admixture and iron slag as a second admixture for the stabilization of soil. In the first phase to achieve the economy and for proper performance of structures it is necessary to improve the geotechnical properties of soil. Out of the different quarry wastes, quarry dust is one, which is produced in abundance. About 20–25% of the total production in each crusher unit is left out as the waste material-stone dust. Bulk utilization of this waste material is possible through geotechnical applications like embankments, back-fill material, and sub base material and like. This paper presents the results of an experimental program undertaken to investigate the effect of stone dust at different percentage on soil, the test results such as index properties, Proctor compaction, CBR test obtained at different proportions of  stone dust admixture are presented and discussed. From the results, it is observed that at optimum percentage, i.e., 30% of stone dust admixture can be replaced. In the second phase utilization of industrial waste materials in the improvement of problematic soils is a cost efficient and environmental friendly method. It helps in reducing disposal problems caused by the various industrial wastes. However, it is essential to understand the performance of these waste products prior to use. The present paper evaluated the potential of Iron Slag to stabilize the soil. From the results, it is observed that Iron slag admixture giving higher values when compared to stone dust at optimum percentage, i.e., 15% of Iron slag admixture can be replaced.