| Title |
Recycling belite cement clinker from post-demolition autoclaved aerated concrete - assessing a new process |
| ID_Doc |
18156 |
| Authors |
Stemmermann, P; Volk, R; Steins, JJ; Beuchle, G |
| Title |
Recycling belite cement clinker from post-demolition autoclaved aerated concrete - assessing a new process |
| Year |
2024 |
| Published |
|
| DOI |
10.1016/j.resconrec.2023.107404 |
| Abstract |
Increasing post-demolition autoclaved aerated concrete (pd-AAC) waste is mainly landfilled due to its physical properties and lacking recycling processes. A promising technology is the production of recycled belite cement clinker, which can partially substitute Portland cement clinker. This paper presents experimental data of recycled belite cement clinker production from pd-AAC that has been successfully demonstrated on technology readiness level 4-5 and its associated lifecycle assessment. Different supply chains for pd-AAC and energy are examined. The closed-loop pd-AAC recycling via the belite route that aims for Portland cement clinker substitution shows significant potential savings in environmental impacts. These savings could reach 0.77 kg CO2-Eq/kg pd-AAC compared to the status quo (landfilling) by using renewable electricity, and 0.34 kg CO2-Eq/kg pd-AAC by using natural gas. The gained reduction of around 13.5 % is significant considering that it is the result of substituting only 15.5 % of the overall input material. |
| Author Keywords |
Recycling; Cement; Post -demolition autoclaved aerated concrete; recycling; Recycled belite cement; Cement clinker substitution; Industrial ecology |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:001162851800001 |
| WoS Category |
Engineering, Environmental; Environmental Sciences |
| Research Area |
Engineering; Environmental Sciences & Ecology |
| PDF |
https://doi.org/10.1016/j.resconrec.2023.107404
|