Application of waste recycle tire steel fibers as a construction material in concrete

Abstract

A bulk volume of waste tires, an underrated global resource, is disposed of in landfills worldwide. Extracting recycled steel fibers from these tires is an evolving trend nowadays. The outcomes of concrete having steel fibers sourced from end-of-life tires are alike industrial steel fibers. Accordingly, the attention of researchers is focused nowadays on using alternative recycled steel fibers in place of industrial steel fibers in concrete. In the current study, the review focuses on waste recycle tire steel fiber (WRTSF)-reinforced concrete applications, considering different lengths and contents for finding the research gap in this research domain. The results and methods to recycle WRTSFs in existing studies are compiled and briefed. The adoption of appropriate composition and characteristics like length, diameter, content, etc., of WRTSFs can be made by using this study to improve the mechanical properties of respective composites. Therefore, the aim of this evaluation is to encourage the application of concrete reinforced with WRTSF for different construction purposes, including but not limited to pavements, tunnel linings, bridge decks, hydraulic structures, and slope stabilization. The study seeks to provide guidance on the appropriate composition and characteristics of WRTSFs to improve the mechanical properties of the composite material.

Application of Waste Tire in Construction: A Road towards Sustainability and Circular Economy

“…According to Table 1, it is clear that the main materials to recycle, after their separation, are the rubber in the form of GTR and the reinforcements, including metal and textiles. To this end, several studies have been performed on each type of raw material to find applications to valorize these residues, and a few review articles have been recently published for recycling ELT metals [38][39][40] and textiles [20,41]. However, the main tire raw material is rubber, which represents about half of a tire's weight.…”