Utilization of Municipal Solid Waste Incineration Bottom Ash in Cement-Bound Mixtures

Abstract

In order to protect the natural resources, it is beneficial for the environment when materials that are not valuable, such as waste or recycled materials, are used in engineering. This article presents laboratory studies on the use of mixtures of incineration bottom ash (IBA) from municipal waste incinerators with natural, fine grain and uniform aggregate in cement-bound layers. The mechanical and engineering properties of aggregates were studied, their usefulness was assessed and possible applications are indicated. The chemical composition of the material was found to be consistent with typical IBA from other incineration plants, and leachability studies were carried out, confirming lack of any environmental impact. The authors’ own mixtures were prepared based on optimal water content and maximal dry densities of solid particles, and the compressive strength was calculated after 7 and 28 days of hardening. The results indicate that replacing natural aggregates with IBA permits an increase in the compressive values for the specimens using the same amount of CEM I 42.5R while improving the frost resistance of cement–aggregate mixtures.

Advancing Earth-Based Construction: A Comprehensive Review of Stabilization and Reinforcement Techniques for Adobe and Compressed Earth Blocks

“…Studies have shown that MSWI bottom ash can serve as a supplementary cementitious material in concrete and mortar mixes (Hossain et al [107]; Poon et al [108]). Furthermore, research has explored its effectiveness as a stabilizing agent for soft marine clay in road construction (Tam et al [109]). By incorporating MSWI bottom ash into construction practices, stakeholders can address waste management challenges while advancing sustainable construction objectives, thereby fostering a more circular and resilient built environment.…”