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

Abstract EN

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.