Mechanical properties of fiber reinforced concrete using copper slag as a fine aggregate

Abstract

In this paper, results and discussions of the experimental study carried out to determine the properties of steel Fiber Reinforced Concrete (FRC) consisting of graded Copper Slag (CS) as fine aggregates are presented and discussed. The properties of the concrete evaluated from the experimental study are workability, compressive strength, flexural strength, split-tensile strength, stress-strain curve under compression and bond strength. The test variables are volume content (0.5, 1.0, 1.5 and 2.0%) and length (30 and 60mm) of the fibers. Test results indicated that addition of steel fibers decreased the workability of the concrete. It is observed from the test results that the strength of the concrete containing graded CS without fibers is lower than that of the control concrete containing conventional fine aggregates. However, addition of crimped steel fibers up to an optimum volume content improved the strength of the concrete. It is concluded from the experimental study that the concrete with properties better than that of the control concrete could be achieved by using graded copper slag as fine aggregates and crimped steel fibers together in the manufacturing of concrete.