High density concrete is widely used in railway, crane counterweight, radiation shielding in nuclear plants or other radiation related application in medical establishment. The aim of this study is to increase the density of concrete and accomplish it by using steel treatment waste as aggregates- iron dross (mainly iron oxides) and steel punchings which are locally available. Two different mixes with the same w/c ratio and cement content were designed by using fine grinded iron dross and a mix of steel punchings with sizes less than 11.2 mm as aggregates. The traditional concrete aggregates were replaced by steel treatment waste in the amount of 50% and 100%. Physical and mechanical properties (density, compressive and tensile strength, freeze-thaw resistance and others) were determined for obtained concrete. The concrete with density up to 4640 kg/m3 was obtained in this study