2026-04-28T01:32:24Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/74332023-03-28T11:16:51Zcom_10259_6171com_10259_5086com_10259_2604col_10259_6172

Using recycled aggregate concrete at a precast-concrete plant: A multi-criteria company-oriented feasibility study Revilla Cuesta, Víctor Fiol Olivan, Francisco Perumal, Priyadharshini Ortega López, Vanesa Manso Villalaín, Juan Manuel Recycled aggregate Self-compacting concrete Industrial-scale mixes Precast-concrete company Multi-criteria analysis Company-oriented approach Numerous test results at laboratory scale confirm the utility of Recycled Aggregate (RA) for the development of concrete that demonstrates durability and adequate in-fresh and mechanical behavior. However, feasibility evaluations of the use of RA in real industrial applications are necessary, before any large-scale industrial application of these products can begin. In this research, the feasibility of producing precast-concrete components containing large amounts of coarse RA at a precast-concrete plant is analyzed. Two Self-Compacting Concretes (SCC) were produced incorporating 0% and 100% coarse RA, respectively, at both laboratory scale (0.08 m3 ) and industrial scale (2 m3 ). Work took place at the industrial-scale facilities of a precast-concrete company that was collaborating in this study. Flowability and mechanical behavior were maintained as concrete production volumes increased, and concrete strength even increased after adding coarse RA, due to a careful mix design. However, the durability performance worsened by around 20% when produced at industrial scale, being this worsening higher whether coarse RA was used. A Multi-Criteria Decision-Making (MCDM) analysis, in which the criteria of the precast-concrete company defined the relative importance of each concrete property, showed the feasibility of manufacturing precast-SCC components containing coarse RA for interior usage, whose fundamental requirement is adequate mechanical strength. The results of the MCDM analysis also underlined the lower cost of coarse RA, making its use in SCC components cast with large concrete volumes advisable. Overall, the addition of coarse RA in the precast-concrete industry is recommended in the interests of a greener construction sector. 2023-02-08T12:43:08Z 2023-02-08T12:43:08Z 2023-02-08T12:43:08Z 2022-11 info:eu-repo/semantics/article 0959-6526 http://hdl.handle.net/10259/7433 10.1016/j.jclepro.2022.133873 eng Journal of Cleaner Production. 2022, V. 373, 133873 https://doi.org/10.1016/j.jclepro.2022.133873 info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/PID2020-113837RB-I00/ES/ESTUDIO A ESCALA REAL DE HORMIGONES SOSTENIBLES, HIDRAULICOS Y BITUMINOSOS, DE ALTAS PRESTACIONES, FABRICADOS CON RESIDUOS SIDERURGICOS Y DE CONSTRUCCION/ info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica, Técnica y de Innovación 2021-2023/TED2021-129715B-I00/ES/Reciclaje de palas y cimentaciones de aerogeneradores en hormigón para nuevos parques eólicos de alta potencia/ info:eu-repo/grantAgreement/MICIU/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FPU17%2F03374/ info:eu-repo/grantAgreement/UBU//Y135.GI/ info:eu-repo/grantAgreement/EC/Kolarctic CBC/KO4068/EU/DeConcrete: Eco-efficient Arctic Technologies Cooperation/DeConcrete/ http://creativecommons.org/licenses/by-nc-nd/4.0/ info:eu-repo/semantics/openAccess Attribution-NonCommercial-NoDerivatives 4.0 Internacional Elsevier