SLOPE STABILITY ANALYSIS FOR TREATED SOIL USING PULVERIZED GLASS POWDER

Abstract

Soil has main problem is that it undergoes consolidation settlement due to the application of long term loading. Another problem is it shrinks significantly if it is dried and expands significantly if it absorbs moisture which exerts much pressure on the substructure. This paper was evaluated the engineering properties on utilizing waste crushed glass as additive on subgrade improvement. The research were conducted soil engineering properties, standard compaction,Atterberg limits to expansive soil, Direct Shear Test. The variation of additive content on stabilized soil: 5%, 10%, 15%, 20% by dry total weight of soil sample respectively. From the results it was found that the liquid limit, the plastic limit and the optimum water content decreased by increasing of added percentage, but the maximum dry density. Friction Angle and cohesion increase. Clay soil also have very low angle of friction due to which it gave low shear strength. When soil come in contact of water its effective strength also decrease due to which shear strength decrease. Glass powder is industrial waste product .which are generally deposited as landfill and dumping from environmental and economical point of view it can be use as admixture in sub base soil , embankment or filling material. As economy of our country increases and construction works also increases and new techniques in construction are develop to increase the standard of civil engineering projects. These methods should also be environmental friendly and cost effective. By using glass powder we can improve the property of soil by economical way. Some experimental investigation was done to analysis the change in property of soil by addition of pulverizeddd glass power inclusion on Plastic limit, Liquid limit, Optimum moist content (OMC), Maximum dry density, Direct shear test (DST). The test was done with varying the percentage of pulverise glass power of 0%, 5%, 10%, 15%. Etc. Glass power was obtained from Moti Nagar Industrial area. Measurement of shear stress parameters was done by performing Direct shear test (DST) in undrained condition on three normal stress of different load i.e., 50N/mm, 100N/mm ,150N/mm2 on 5 sample contain 0%, 5%, 10%, 15%, 20% of glass power of soil. Result of these experiments are use to find the variation of shear stress parameter i.e., angle of friction and cohesion. By plotting the normal stress vs. shear stress curve. A slope in a soil encountered when the elevation of the ground surface gradually changes from a lower level to a higher one. Such a slope may be either natural (in hilly region ) or manmade (in artificially constructed embankment or excavations). The soil mass bounded by a slope has a tendency to slide down. The principle factor causing such a sliding failure is the self-weight of the soil. However, the failure may be aggravated due to seepage of water or seismic forces. Every man-made slope has to be properly designed to ascertain the safety of the slope against sliding failure. The aim of this research paper is to study the behavior of slope by different Analysis methods of slope analysis on SLOPE/W software by limit equilibrium method . Slope/W is a commercial software by GEOSTUDIO. Slope/W is used to determine the minimum FOS in critical slip surface for profile .The pore water pressure contour and piezometric lines are also shown in this software .In this paper a model is produce in Slope/w to understand how it works and gives results, The assumptions considered and the limitations observed.