The efficiency of using incinerated organic waste as an alternative aggregate for concrete

  • hossam elaqra civil engineering department
  • Saddam Qarmout
  • Jehad hamad
  • Eyad Hadad
  • Fahad Alqahtani


With the growth of the global population, two major problems have emerged. Firstly, a significant amount of domestic and industrial waste is discarded and placed in landfills. Secondly, the necessity of more construction and building materials. This research discusses the use of alternative green resources for construction materials from recycled organic waste, which represents more than 60% of the total waste generated by humans. After incineration at 750°C, waste is separated into five groups, namely bottom ash (BA) powder (for replacing cement), sand, and fine, medium and coarse aggregate. The powder underwent the pozzolanic reaction and the optimum replacement was 10% for the powder, 30% for the sand, and 10% for the fine, medium, and coarse aggregates. A higher compressive strength was applied to the medium aggregate replacement and a lower one for the fine aggregate. In general, BA can be used as an aggregate replacement as the powder undergoes a pozzolanic reaction and can used as a replacement for cement.

Civil Engineering