Improvement of Loose Red soft soils using Aluminium foil encased stone columns

Abstract

In this study, tests on embedded, floating single & group of stone columns with encasement of aluminium foil in loose red earth are conducted. Experiments are conducted on performance of single and group column arrangement and effect of encasement keeping the diameter constant.The model tests are carried out in a steel cylinder mould with a diameter of 250mm and a height of 150mm. The number of encased reinforcement(column)for embedding, as well as floating depths are studied in this study. Because of the requirement for serviceability in real foundation applications, outcomes of  tests are assessed  in terms of load improvement  ratio at two settlement levels and settlement reduction factor, increments in load carrying capacity and reduction in settlement are investigated. It also  investigates the reinforced red earth’s load improvement ratio and settling reduction factor over loose soil. The behaviour of single and group columns, as well as the encasement influences on the improvement of loose red soil, are noticed.The test results revealed that addition of quarry dust columns can significantly improve the load carrying capacity of loose red earth while reducing settlement. In the laboratory stone column and encased stone columns response of load versus settlement are studied. The settlement in encased stone columns is lesser and the settlement decreased with the increasing stiffness of the encasing material.Our project’s purpose is to offer less bearing capacity, limit total and differential settlements to accept the size of anticipated load, and provide long term satisfactory performance