Abstrait

UNDRAINED SHEAR STRENGTH CHARACTERISTICS OF AN EXPANSIVE SOIL TREATED WITH CERTAIN INDUSTRIAL EFFLUENTS AT DIFFERENT PORE FLUID CONTENT RATIOS

Dr .A. V. Narasimha Rao , M. Chittaranjan, K. V. N. Laxma Naik

India has a large network of industries located in different parts of the country and many more are planned for the near future. Several million metric tons industrial effluents are produced in these establishments. Disposal of different effluents produced from different industries pose land contamination in nearby locality. Land contamination causes modification of index and engineering properties of soils. Modification of soil properties from industrial wastes causes foundation failures, structural damage in light industrial buildings on soil contaminated by various industrial effluents have been reported. Hence safe disposal of wastes becomes a challenging task for geotechnical engineers in general and environmental engineers in particular. On the other hand in many situations, soils in its natural state do not present adequate geotechnical properties to be used as foundation layers and road service layers. These soils cause many problems in structures that come into their contact or constructed out of them. In order to suit their geotechnical parameters to meet the requirements of technical specifications of construction industry, studying soil stabilization is more emphasized. Earlier investigations reported that some industrial effluents improve the soil properties and they can be used as soil stabilisers. Hence Soil industrial effluent interaction causes improvement in soil properties or degradation of soil properties. Hence, in this paper the effect of certain industrial effluents on the strength characteristics of an expansive soil has been presented. The effect of pore fluid content on Undrained shear strength is studied separately on treated soil. In order to compare the results of treated soil, tests are also carried out on untreated soil.