Continuous growth in the various construction activities increases the demand for conventional construction materials; hence it has become necessary to look for alternative materials for construction work in the direction of sustainable development. In India, there are numerous industries which produce enormous quantities of stone dust and bottom ash which are generally treated as waste materials. In the present study, an attempt has been made for proper utilization of these materials in the field of geotechnical engineering. The shear strength characteristics of these materials by adding EPS beads in different percentages were investigated through shear box tests. Four different percentage of mix ratios 0.094, 0.188, 0.282 and 0.376 % were used apart from pure stone dust and bottom ash specimen in the study. The direct shear tests were carried out for four different normal stresses 50,100, 150 and 200 kPa. Effect of different mix ratios on density, stress – strain patterns and failure shear stress of these prepared geomaterials were investigated and the result are incorporated in the paper. The density of both bottom ash and stone dust geomaterials decreases with increasing mix ratio values. The density of bottom ash based geomaterial is lower than that of stone dust based geomaterial. The relationship between shear stress – strain was found to be non-linear for all mix ratios of both the geomaterials. The observed failure shear stress values decreased with increasing mix ratio values for both the geomaterials. For each mix ratio value, the failure shear stress values of these geomaterials were increased with increasing normal stresses.
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