Mechanical and dynamic properties of high strength concrete with well graded coarse and fine tire rubber

Abstract

Nowadays, many researchers are focused on studying the behavior of rubberized concrete as a structural material due to its enhanced properties such as ductility, energy dissipation, and damping ratio and its role in sustainable development by recycling non-biodegradable wastes and reducing the amount of natural aggregates in concrete mixture. Previously, it was suggested that fine rubber particles should be used instead of coarse ones when the intention is to achieve high strength concrete; however, incorporating coarse rubber particles provides better energy dissipation, damping ratio, and vibration behavior. This study aims to develop high strength rubberized concrete by utilizing large amounts of fine materials and replacing 15% and 25% of the natural aggregates by volume with a well graded mix of coarse and fine rubber particles. As a part of the study, mechanical, and dynamic tests were performed to address the properties of the produced concrete with different rubber replacement percentages. In general, the results of the experiments have shown that it is possible to produce high strength concrete with superior vibration behavior when 25% of the natural aggregates is replaced. (C) 2020 Elsevier Ltd. All rights reserved.