Document Type : Research Paper

Authors

• Rawaa Obaid ¹
• Ahmed Tareq Noaman ²
• Akram S Mahmoud ³

¹ Civil Engineering Department, University of Anbar, Ramadi, Iraq

² Civil Engineering Department, College of Engineering, University Of Anbar

³ Ramadi, Cermaic St null

Abstract

This study presents an investigation of the mechanical properties of normal concrete reinforced with discarded steel fibers (DSFs) resulting from tire manufacturing. DSFs were added to concrete in two different volume fractions of (0.25 %, and 0.5 %), and these fibers have dimensions of (40 mm length×0.92 mm diameter). The results showed that the compressive strength of the concrete was enhanced by (8.8%, and 3.3%) by adding of DSFs. However, the workability of concrete decreased at all added ratios. While the density is slightly changed. Also, the results indicate that the modulus of elasticity shows slight increases by (3.06%, and 2.25%). Additionally, the incorporation of DSFs improves the splitting tensile strength and modulus of rupture significantly. For concrete mixes having volume fractions of 0.25% and 0.5%, the splitting tensile increased by (7.89%, and 23.68%), and the modulus of rupture increased by (6.67% and 25.58%), respectively. It was concluded that using this type of discarded fibers can improve the mechanical properties of concrete as an alternative type for other types of industrial fibers.

Keywords

• Discraded steel fibers,,
• ,،Normal concrete,,
• ,،Mechanical properties,,
• ,،Waste materials

Main Subjects

• Structural Engineering