Abstract
Using tires in the construction sector can have a lot of advantages because they are constructed of materials that are high resistance, durable, high quality, and flexible. Unlike asphalt pavements, rigid concrete pavements are not as flexible, even though they have a respectable resistance to bending. Rubber concrete reinforced with fibers is created by utilizing tire waste from worn automobile tires, which contains steel and rubber fibers. Because of its special qualities, this kind of concrete is a popular choice for concrete pavement construction. This paper's goal is to examine how rubber concrete reinforced with industrial and tire-derived steel fibers behaves when used to create concrete pavements. In this paper, various-sized rubber pieces were used in place of some of the coarse and fine grains. It was assessed whether kind of steel fibers—manufacturer-produced steel fibers (MSF) and recycled steel fibers from used car tires (RTSF)—would work best for reinforcing rubberized concrete. Based on the results, adding rubber to some of the concrete's natural particles reduced the material's density and efficiency while increasing its air content. The modulus of elasticity, compressive strength, and bending strength all declined with increased use of rubber; however, the compressive strength of regular concrete rose by almost 30% when 40 \(\:\raisebox{1ex}{$Kg$}\!\left/\:\!\raisebox{-1ex}{${m}^{3}$}\right.\) of steel fibers were added. Additionally, bending strength decreased when steel fibers were added to rubber concrete reinforcement, whereas compressive strength and modulus of elasticity increased by 12.5 and 28.4 percent, respectively. Ultimately, it was determined that replacing 60% of the rubber pieces with regular concrete particles and adding 20 \(\:\raisebox{1ex}{$Kg$}\!\left/\:\!\raisebox{-1ex}{${m}^{3}$}\right.\) of industrial and 20 \(\:Kg\) of recycled fibers was the optimal combination to use when building flexible rubber concrete pavement reinforced with steel fibers.