Experimental Investigation on Soil with Pond Ash and Alccofine

Cohesive soil causes great engineering problems due to its poor strength, high compressibility and low permeability. It covers large and extensively located areas of India and also many parts of the world. Silty soil extends in large stretches and construction of pavements and other structures on such type of soils is a great problem. To set right these problems, it is very much necessary to treat these soils. There are so many methods for the treatment of these soils. Some of them are very costly and some are very tedious. Several-methods of soil-improvement using Pozzolanic materials have been developed and used successfully in practice. The treatment of soft clayey soils with flyash, Rice husk ash, Phasphogypsum along with small quantity of cement is very simple, economical and pollution controlling. It has been useful in a diversity of civil-engineering works, like in the construction of base-courses, where good materials are not economically available; for reducing the permeability and compressibility of soils in hydraulic and foundation works; for stabilization of slopes, embankments and excavations. A considerable amount of research concerning stabilization of soil with additives such as cement, alccofine, lime – fly ash and salt, bitumen and polymers is available in the literature. Likewise, the coal ash considered as an industrial waste can be effectively used in the construction industry.