Mortar is a cement based paste widely used for constructing masonry structures. It is made by mixing cement and fine aggregate with adequate water cement ratio. Mortar is evenly applied on the wall structures to give a smooth surface finish and it also serves as a joint when applied between bricks. In the present world, Construction industry is facing much difficulty in collecting river sand as there are lot of restrictions imposed by the Government. Recent studies revealed that the waste rubber tire powder can be used instead of river sand. It is also well known fact that the cement manufacture industry causes environmental pollution and so it is better to use alternative eco-friendly material for cement. Micro silica (MS) and ground granulated blast furnace slag (GGBS) are industrial discarded goods and can be utilized as cement alternatives. In this study, Rubberized mortar is prepared by replacing sand with chemically treated rubber tire powder at 5%, 10%, 15% and 20% replacement levels and also replacing cement by MS and GGBS collectively. MS is replaced at 10% and 20% for cement whereas GGBS is replaced constantly at 10% for cement. The study analyses the performance of the rubberized mortar with combined effects of GGBS as well as MS and finally the ideal replacement level of each material is determined. It is found that 10% rubber tire powder for sand, 20% of MS and 10% of GGBS collectively for cement gives better performance than other replacement levels.