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Combination of LCA and circularity index for assessment of environmental impact of recycled aggregate concrete
University of Borås, Faculty of Textiles, Engineering and Business.
University of Borås, Faculty of Textiles, Engineering and Business.ORCID iD: 0000-0003-4804-382x
RISE CBI Cement and Concrete Research Institute.
University of Borås, Faculty of Textiles, Engineering and Business.
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2023 (English)In: Journal of Sustainable Cement-Based Materials, ISSN 2165-0373, E-ISSN 2165-0381, Vol. 12, no 1Article in journal (Refereed) Published
Sustainable development
According to the author(s), the content of this publication falls within the area of sustainable development.
Abstract [en]

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.

Place, publisher, year, edition, pages
2023. Vol. 12, no 1
Keywords [en]
Concrete recycling, recycled aggregate, LCA, circular economy, sustainability, LIFE-CYCLE ASSESSMENT, HYDRATED CEMENT
National Category
Construction Management Environmental Engineering
Identifiers
URN: urn:nbn:se:hb:diva-27666DOI: 10.1080/21650373.2021.2004562ISI: 000743439500001Scopus ID: 2-s2.0-85122887571OAI: oai:DiVA.org:hb-27666DiVA, id: diva2:1646043
Note

Times Cited in Web of Science Core Collection: 0 Total Times Cited: 0 Cited Reference Count: 38

Available from: 2022-03-21 Created: 2022-03-21 Last updated: 2024-01-16Bibliographically approved

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Kadawo, AbdinasirSadagopan, MadumitaBolton, KimNagy, Agnes

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