RT info:eu-repo/semantics/article
T1 Using recycled aggregate concrete at a precast-concrete plant: A multi-criteria company-oriented feasibility study
A1 Revilla Cuesta, Víctor
A1 Fiol Olivan, Francisco
A1 Perumal, Priyadharshini
A1 Ortega López, Vanesa
A1 Manso Villalaín, Juan Manuel
K1 Recycled aggregate
K1 Self-compacting concrete
K1 Industrial-scale mixes
K1 Precast-concrete company
K1 Multi-criteria analysis
K1 Company-oriented approach
K1 Ingeniería civil
K1 Civil engineering
K1 Materiales de construcción
K1 Building materials
AB Numerous test results at laboratory scale confirm the utility of Recycled Aggregate (RA) for the development ofconcrete that demonstrates durability and adequate in-fresh and mechanical behavior. However, feasibilityevaluations of the use of RA in real industrial applications are necessary, before any large-scale industrialapplication 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-CompactingConcretes (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-concretecompany 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 acareful mix design. However, the durability performance worsened by around 20% when produced at industrialscale, 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 concreteproperty, showed the feasibility of manufacturing precast-SCC components containing coarse RA for interiorusage, whose fundamental requirement is adequate mechanical strength. The results of the MCDM analysis alsounderlined the lower cost of coarse RA, making its use in SCC components cast with large concrete volumesadvisable. Overall, the addition of coarse RA in the precast-concrete industry is recommended in the interests of agreener construction sector.
PB Elsevier
SN 0959-6526
YR 2022
FD 2022-11
LK http://hdl.handle.net/10259/7433
UL http://hdl.handle.net/10259/7433
LA eng
NO The authors wish to express their gratitude for funding this research work to the Spanish Ministry of Universities, MICINN, AEI, EU, ERDF and NextGenerationEU/PRTR [PID2020-113837RB-I00; 10.13039/ 501100011033; TED2021-129715B-I00; FPU17/03374]; the Junta de Castilla y Leon ´ (Regional Government) and ERDF [UIC-231]; and the University of Burgos [SUCONS, Y135.GI]. In addition, Priyadharshini Perumal acknowledges the financial support received from the project DeConcrete [grant # KO 4068: Eco-efficient Arctic technologies cooperation] funded by the Kolarctic CBC initiative of the European Union. Finally, the support and assistance of ARTEPREF S.A. for the development of this study is also highly appreciated.
DS Repositorio Institucional de la Universidad de Burgos
RD 23-nov-2024