MECHANICAL PROPERTIES OF RECYCLED TIRE WIRES AND GLASS FIBER REINFORCED CONCRETE

MOTI MULETA GEMENE, Tesfaye Alemu(PhD)
2019
Concrete is a versatile construction material with various uses. It has poor tensile strength and good compressive strength mechanical properties. In past, an effort has been made to improve concrete mechanical properties by mixing with various foreign materials such as synthetic and natural fibers, steel wires and plastics. However, there is research gap in literature to study comparative use of recycled and new materials for improving concrete mechanical properties. This research work
more » ... search work experimentally investigates use of new glass fibers and recycled tire fibers in 0.5%, 1% and 1.5% in weight mixes with concrete to study concrete mechanical properties performance gains such as compressive, flexural and split tensile strength properties. Experimental results indicated as compared to control plain concrete specimen, use of recycled steel fiber and glass fibers in concrete mix increased flexural property of concrete by 19.64% and 24.56% whereas split tensile strength of concrete is enhanced by 8.15% and 12.02%, respectively. Similarly, compressive strength of concrete is improved by 5.34% and 7.87% respectively. Also, optimum blend percentage of recycled tire fiber and glass fiber for enhanced performance gains in concrete mechanical properties is one percent. Finally, use of recycled steel fibers and glass fibers in concrete exhibited similar concrete mechanical property performance gains however, recycled steel fibers has 78% direct cost reduction as compared to glass fibers. From the entire test, it is found that both recycled tire wire and glass fiber increases concretes mechanical properties
doi:10.20372/nadre/4317 fatcat:ngyak2a6gbgnlkiumptdph7twa