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

• Published in: Maǧallaẗ al-abḥath al-handasiyyaẗ 2023-03, Vol.11 (1 B), p.67-85
• Main Authors: Hamad, Jihad Tawfiq, Qarmout, Saddam H., al-Qahtani, Fahad K., Haddad, Iyad A., al-Aqra, Hussam A.
• Format: Article
• Language: English
• ISSN: 2307-1877; 2307-1885
• DOI: 10.36909/jer.12521

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, there is a necessity for more construction and building materials. This research discusses the use of alternative green resources for construction materials taken from recycled organic waste, which represents more than 60% of the total waste generated by humans. Results showed that, after incineration at 750 °C, the reminder represented less than 15% of the original mass of the waste. The waste was separated into five groups: bottom ash (BA) powder, this part represented 5% of the reminder after incineration (for replacing cement); sand; and fine, medium and coarse aggregates. The powder underwent a 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.