Mechanical properties properties of rubberized lightweight aggregate concrete

A detailed investigation of rubberized lightweight aggregate concrete was conducted using 38 cylindrical and 36 beam specimens. Six mix designs, incorporated in the study, contained rubber replacement ratios from 0% to 100% by volume replacement of a lightweight expanded-shale coarse aggregate. The objective of this study is to investigate mechanical properties of lightweight tire-derived aggregate concrete, including compressive strength, modulus of elasticity, splitting-tensile strength, flexural strength, and flexural toughness. Further, an impact test was conducted using a falling weight to investigate dynamic properties of specimens subjected to flexure. Results suggest tire-derived aggregates reduces the mechanical strength of specimens, but, enhances ductility and toughness of materials. These enhancements are valuable for dynamic applications of lightweight concrete. (C) 2017 Elsevier Ltd. All rights reserved.