Flexural Behavior of Concrete incorporating Crumb Rubber pretreated with Waste Quarry Dust

Abstract

Concrete is the second most used substance in the world after water and is the most widely used building material. Its usage worldwide, ton for ton, is twice that of steel, wood, plastics, and aluminium combined. Concrete is the primary structural component, that exists in buildings, roads, dams and bridges. In recent days the problem faced by the construction industry is acute shortage of raw materials and recycle materials are widely in use for saving materials for future and similarly recycling the old material. Used old tires of different vehicles are dumped as it become useless after its life and became hazardous for environment if used only for burning. Now it has become necessary to use damaged tires from various vehicles to produce rubberized concrete structures as a good solution to treat environmental pollution and reduce the total cost of construction. Rubberized concrete is used by many researchers by replacing percentages of fine and coarse aggregate but bonding between rubber and other constituent materials of concrete remains questionable vis-à-vis effect of temperature on rubberized concrete. For addressing bonding of rubber and use it as a replacement of sand is analyzed for its flexural behavior after treatment of rubber with Waste Quarry Dust (WQD) with varying temperature. Replacement of sand was done with non-treated rubber and treated rubber with WQD with replacement percentages 0%, 5%, 10%, 15%, 20%, and 25%. Flexural test was performed on Concrete prism beams of size 100mm x 100mm x 400mm after 28 days curing using center point loading technique after varying temperatures of 23 ̊C, 200 ̊C, 400 ̊C and 600 ̊C. Flexural behavior of concrete is analyzed with replacement of sand with rubber (both untreated and treated with WQD) and effect of temperature on it.