An Experimental Study on Effect of Partial Replacement of Rubber Tyres Dust as Fine Aggregates on Compressive Strength of Concrete

Abstract

India is a developing country, and new infrastructures like highways, railways and roads are always need of the hour and need to globalization. The circular economy in terms of recycling, reuse and reduce waste, and waste management is gaining attention to the research community all around the world nowadays. In a circular economy system resource incoming, waste can be reduced by elimination or slowing its wastage and opening window for repair, reuse and recycling. Considering the facts that are presented above a study was planned with the objective to evaluate the effect of scrap tyre rubber as a fine aggregate replacement on compressive strength of concrete with different mix designs rubber at different curing periods. Finely grounded tyre rubber with granular texture and size range from very fine powder to sand-sized particles of size 595, 250, and 177 μ has been used as fine rubber aggregates under different mix proportions. The mix design M25, M30 and M35 grades of concrete were prepared with 5, 10 and 15% replacement of fine aggregates by rubber tyre dust. A decrease in compressive strength 10.27, 9.7 and 10.51% has been observed for M35 grade of concrete after 5% replacement of fine aggregates for scrap tyre rubber dust size 595 μm, 250 μm and 177 μm, respectively. A drastic decrease in compressive strength greater than 30% has been observed on partial replacement of rubber tyre dust beyond 15% with fine aggregates.