| Title |
Combination of LCA and circularity index for assessment of environmental impact of recycled aggregate concrete |
| ID_Doc |
23936 |
| Authors |
Kadawo, A; Sadagopan, M; During, O; Bolton, K; Nagy, A |
| Title |
Combination of LCA and circularity index for assessment of environmental impact of recycled aggregate concrete |
| Year |
2021 |
| Published |
|
| DOI |
10.1080/21650373.2021.2004562 |
| Abstract |
Multidisciplinary approach is used to evaluate concrete with recycled concrete aggregates (RCA) from technical, environmental impacts and product circularity perspectives. Two RCA replacements investigated, RAC50: fine aggregates; RAC100: both coarse, fine aggregates. Reference, recycled concretes have same cement content, similar workability and compressive strength requirement, proven experimentally. RCA is sourced from pre-fab element discards of a Swedish plant, the logistical alternatives requiring environmental impact analysis. Alternatives are RCA crushing at plant and crushing at a different location including transportation. LCA shows transportation is second largest contributor after cement in all impact categories. RAC alternatives show lower total impact than reference concrete due to RCA replacement. A circularity index for concrete based on economic value of recirculated aggregates; supplements LCA for sustainability reporting. Circularity index results: RAC100 > RAC50 > RC. Combining circularity index with LCA helps optimize recycling process with regard to amount of recycled material and logistics respectively. |
| Author Keywords |
Concrete recycling; recycled aggregate; LCA; circular economy; sustainability |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000743439500001 |
| WoS Category |
Construction & Building Technology; Green & Sustainable Science & Technology; Materials Science, Multidisciplinary |
| Research Area |
Construction & Building Technology; Science & Technology - Other Topics; Materials Science |
| PDF |
https://doi.org/10.1080/21650373.2021.2004562
|