Thermal performance of concrete with recycled concrete powder as partial cement replacement and recycled CDW aggregate
![Thumbnail](/dspace/bitstream/handle/2183/37949/CanteroB_2020_thermal-performance_AS-10-13-4540.pdf.jpg?sequence=5&isAllowed=y)
Use este enlace para citar
http://hdl.handle.net/2183/37949Coleccións
Metadatos
Mostrar o rexistro completo do ítemTítulo
Thermal performance of concrete with recycled concrete powder as partial cement replacement and recycled CDW aggregateData
2020Cita bibliográfica
Cantero, B., Bravo, M., de Brito, J., Sáez del Bosque, I. F., Medina, C. (2020). Thermal performance of concrete with recycled concrete powder as partial cement replacement and recycled CDW aggregate. Applied Sciences (Switzerland), 10(13). https://doi.org/10.3390/APP10134540
Resumo
[Abstract:] This novel study was triggered by a lack in the international literature of the simultaneous use of ground recycled concrete (GRC) as a cement replacement and mixed recycled aggregate as part of the granular skeleton in recycled concrete. It explores the thermal behaviour of concrete mixes bearing 10 wt% or 25 wt% GRC as a cement replacement and 25 wt% or 50 wt% mixed recycled aggregate (MRA) sourced from construction and demolition waste (CDW). The experimental programme conducted assessed concrete’s dry density, open porosity, electrical and thermal conductivity and specific heat capacity. The findings showed that the use of 10% and 25% GRC, in conjunction with 50% MRA, reduced thermal conductivity by 7.9% to 11.8% and raised specific heat capacity by 6.0% to 9.1% relative to concrete with 100% natural aggregate (NA). A cross-property analysis revealed that improved thermal performance was linearly related to lower density and higher porosity. The results also support the conclusion that these new recycled aggregate concrete mixes are more energy-efficient construction materials than conventional concrete.
Palabras chave
Recycled aggregate
Ground recycled concrete
Recycled materials concrete
Construction and demolition waste
Thermal properties
Ground recycled concrete
Recycled materials concrete
Construction and demolition waste
Thermal properties
Versión do editor
Dereitos
Atribución 3.0 España
Ítems relacionados
Mostrando ítems relacionados por Título, autor ou materia.
-
Hot mix asphalt using C&D waste as coarse aggregates
Pérez Pérez, Ignacio; Pasandín, A.R.; Medina-Rodríguez, Luis (Elsevier, 2012-04)[Abstract] This article evaluates the possibility of designing hot asphalt mix road pavements using Construction and demolition waste as coarse recycled aggregates. The percentages of recycled aggregates used in the mixtures ... -
Effect of fine and coarse recycled concrete aggregate on the mechanical behavior of precast reinforced beams: Comparison of FE simulations, theoretical, and experimental results on real scale beams
Velay-Lizancos, Mirian; Vázquez-Burgo, Pablo; Restrepo, David; Martínez-Lage, Isabel (Elsevier, 2018)[Abstract:] In this work, we present the effect of using coarse and fine recycled aggregate jointly as a partial replacement of natural aggregate in self-compacting concrete in the mechanical performance of precast beams. ... -
The effect of recycled aggregates on the accuracy of the maturity method on vibrated and self-compacting concretes
Velay-Lizancos, Mirian; Martínez-Lage, Isabel; Vázquez-Burgo, Pablo (Elsevier, 2019)[Abstract:] Fine and coarse recycled aggregate used jointly as partial replacement of natural aggregate is not allowed for structural concrete in many international standards. More studies about it are needed toward more ...