AN EXPERIMENTAL STUDY OF SQUARE FOOTING RESTING ON GEO-GRID REINFORCED SAND

Abstract

A series of laboratory model test has been carried out to investigate the bearing capacity of the square footing resting on reinforced sand bed. The geo-grid as a reinforcement material has been used. In the present study an attempt has been made to study the bearing capacity of square footing on sand reinforced bed. The effect of different parameter like the depth of the upper most layer of reinforcement from the base of the model footing (u), for different densities of the sand (γ = 1.55, 1.65, and 1.75 gm/cc) the test has been carried out. Three numbers of layers, has been fixed. The test results showed that the beneficial use of geo-grid reinforcement in terms of increasing in the bearing capacity and minimizing the settlement, at an optimum depth of reinforcement, however for the higher density of the soil gives maximum bearing capacity. Therefore, for effective utilization of geo-grid reinforcement, the optimum depth should be (u= 0.33B) which is found to be good agreement with the past researchers, and the foundation soil should be in higher density. Keywords-Sand, direct shear test, reinforced & unreinforced, geo-grid, bearing capacity. -----------------------------------------------------------------------***----------------------------------------------------------------------