White Ordinary Portland Cement blended with superfine steel dust with high zinc oxide contents

Scanning electron microscopy and X-ray diffraction characterization were conducted in order to investigate the microstructure of the samples. In addition, compression, density, and flow table tests were done over all samples. Thermo-gravimetric tests were performed to analyze the waste thermal stability. The effect of the potential hazardous components of this waste in water was analyzed through leachability tests. For all samples, compressive strength ranged from 73 to 2.5 MPa. The lowest strength value corresponded to 70 wt% of waste. Results show a solution for using this waste as admixture in cements and concrete, and therefore as a method for reducing cement paste in buildings and infrastructure.