Shear behavior of exploiting recycled brick waste and steel slag as an alternative aggregate for concrete production

Abstract

This research is mainly studied the effect of treated waste crushed brick and steel slag on the shear behavior of reinforced concrete beams. For that purpose, eight concrete beams with 1000 mm length, 150 mm height, and 125 mm width, and the transverse reinforcement spaces are constantly equal. The obtained crushed brick from building demolition wastes are incorporated in the concrete mixes at these percentages 0%, 13%, 26%, 39% and 52% as a replacement by the weight of coarse aggregate. Furthermore, the steel slag was merged in the beams at 0%, 11%, 22% and 33% as a replacement of fine aggregate to improve the strength characteristics. Samples underwent at four points bending test. In this test, the diagonal cracking load, ultimate shear strength have been evaluated to check the behavior of beam concrete with the two waste materials, and maximum deflection occurred at the mid-span of the beam. The determination of the influence of crushed brick and steel slag on the mechanical properties and the reinforced concrete beams was the target of this investigation. In addition, the outcome of this experiment has shown that at the first substitution (13%) of fine aggregate with treated crushed brick does not have a negative impact. The results show steel slag improved the samples in terms of mechanical properties and improved the shear behavior of crushed brick concrete beams comparable to control samples. The results show that the optimal ratio to be utilized for steel slag is 22% and in terms of crushed brick even after treatment still there is a reduction as compared to the control mixture.