| Title | A digital workflow for assessing lifespan, carbonation, and embodied carbon of reusing concrete in buildings |
|---|---|
| ID_Doc | 22102 |
| Authors | Dervishaj, A; Malmqvist, T; Silfwerbrand, J; Gudmundsson, K |
| Title | A digital workflow for assessing lifespan, carbonation, and embodied carbon of reusing concrete in buildings |
| Year | 2024 |
| Published | |
| Abstract | Concrete is the most used construction material, accounting for 8% of global CO2 2 emissions. Various strategies aim to reduce concrete's embodied carbon, such as using supplementary cementitious materials, utilizing cleaner energy, and carbonation. However, a large potential lies in reusing concrete for new buildings in a Circular Economy, thereby closing material loops and avoiding CO2 2 emissions. This study focuses on the reuse of precast concrete elements. We present a digital workflow for assessing reuse by predicting the remaining service life, estimating CO2 2 uptake by natural carbonation, and calculating the embodied carbon savings of concrete reuse. Both carbonation rates from EN 16757 and our investigation were applied to a case study building. While EN 16757 rates suggest that most precast elements have reached the end of their service life, our assessment shows that these elements have a sufficient lifespan for reuse. Plaster and coverings significantly delay carbonation and extend service life. During the first service life following EN 16757, carbonation was 19,2 kg CO2/m3, 2 /m 3 , whereas our prediction was 5,4 kg CO2/m3. 2 /m 3 . Moreover, CO2 2 uptake during service life, including reuse, was less than 6 % of the embodied carbon. The climate benefits of reuse greatly exceeded those of carbonation. Furthermore, carbonation did not have a decisive influence when applying Cut-Off, Distributed, and End-of-Life allocations for assessing embodied carbon of re-used elements in subsequent life cycles. The digital workflow is useful in quickly assessing lifespan, carbonation, and embodied carbon of concrete. It can be leveraged as a decision-making tool when designing for reuse. |
| https://doi.org/10.1016/j.jobe.2024.110536 |
Similar Articles
| ID | Score | Article |
|---|---|---|
17362
|
Backes, JG; Del Rosario, P; Petrosa, D; Traverso, M; Hatzfeld, T; Günther, E Building Sector Issues in about 100 Years: End-Of-Life Scenarios of Carbon-Reinforced Concrete Presented in the Context of a Life Cycle Assessment, Focusing the Carbon Footprint(2022)Processes, 10, 9 | |
| 4395
|
Martin, C; Manu, E; Hou, PK; Adu-Amankwah, S Circular economy, data analytics, and low carbon concreting: A case for managing recycled powder from end-of-life concrete(2023) | |
| 29032
|
Mostert, C; Sameer, H; Glanz, D; Bringezu, S Climate and resource footprint assessment and visualization of recycled concrete for circular economy(2021) | |
| 25275
|
Küpfer, C; Bastien-Masse, M; Fivet, C Reuse of concrete components in new construction projects: Critical review of 77 circular precedents(2023) | |
| 26529
|
Bertin, I; Saadé, M; Le Roy, R; Jaeger, JM; Feraille, A Environmental impacts of Design for Reuse practices in the building sector(2022) | |
| 19784
|
Zhang, N; Xi, B; Li, JB; Liu, L; Song, GH Utilization of CO2 into recycled construction materials: A systematic literature review(2022)Journal Of Material Cycles And Waste Management, 24.0, 6 | |
| 19685
|
Shivaprasad, KN; Yang, HM; Singh, JK A path to carbon neutrality in construction: An overview of recent progress in recycled cement usage(2024) | |
| 21604
|
Devènes, J; Brütting, J; Küpfer, C; Bastien-Masse, M; Fivet, C Re:Crete-Reuse of concrete blocks from cast-in-place building to arch footbridge(2022) | |
| 13000
|
Stengel, T; Kustermann, A Life cycle assessment of concrete made of 100% recycled aggregate compared to normal concrete(2024) | |
| 14750
|
Kravchenko, E; Sauerwein, M; Besklubova, S; Ng, CWW A comparative life cycle assessment of recycling waste concrete powder into CO2-Capture products(2024) |