The main objective of this research is to investigate the effect of utilizing steel slag as a coarse aggregate and black sand, ilmenite and magnetite as fine aggregate on the concrete behavior such as; compressive strength, resistance to sulfate attack, elevated temperatures and abrasion. Ferrosilicon was added by 10% of cement content, replacement percentages of black sand, ilmenite and magnetite equal 100%. Test specimens were subjected to elevated temperatures up to 750 oC for 2 hours. Specimens were exposed to sever sulfate attack through drying-wetting cycles in sodium sulfate solution with concentrations of 5%, 10% and 20% for 180 days. Exposure to 250 oC led to a notable increase in compressive strength. BS showed a significant effect on fire resistance properties for high performance heavyweight concrete (HWHPC) mixes, especially at 750 oC. The results indicated that utilizing 100% Ilmenite as fine aggregate replacement achieved the lowest water absorption, while black sand replacement enhanced abrasion resistance.

Black sand, ferrosilicon,ilmenite, magnetite,water absorption, abrasion resistance, steel slag, HPHWC, durability