The use of recycled aggregates for High-performance Self-compacting concrete production
Due to the favorable characteristics of Self-compacting Concrete (SCC) and the unique properties of High-Performance Concrete (HPC), as well as its rising application in the construction industry, this type of concrete remains the matter of interest and research. Also, due to the environmental issue...
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| Tipo de recurso: | tesis de maestría |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Politècnica de Catalunya (UPC) |
| Repositorio: | UPCommons. Portal del coneixement obert de la UPC |
| Idioma: | inglés |
| OAI Identifier: | oai:upcommons.upc.edu:2117/358592 |
| Acceso en línea: | https://hdl.handle.net/2117/358592 |
| Access Level: | acceso abierto |
| Palabra clave: | Self-consolidating concrete Concrete Self-compacting Concrete (SCC) High-Performance Concrete (HPC) RFA recycled fine aggregates Formigó autocompactant Formigó Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures::Materials i estructures de formigó |
| Sumario: | Due to the favorable characteristics of Self-compacting Concrete (SCC) and the unique properties of High-Performance Concrete (HPC), as well as its rising application in the construction industry, this type of concrete remains the matter of interest and research. Also, due to the environmental issues connected with natural aggregates in concrete production, replacing natural aggregates with recycled aggregates is a more sustainable technique to produce concrete. This project investigates the use of recycled fine aggregates (RFA) for high- performance self-compacting concrete. The impact of three types of recycled fine aggregates (Ceramic, Concrete and Mixed) on the physical, mechanical and durability properties of concrete was evaluated. For that, many tests have been conducted to analyse the behavior of this type of concrete. Also, the influence of the incorporation of fly ash in this particular concrete with 30% and 50% replacement was assessed. Moreover, the analysis of autogenous shrinkage to determine the possibility of RFAs as an internal curing agent. Also, this type of concrete's capacity to continue performing its intended purpose while maintaining its serviceability and durability by the drying shrinkage and chloride diffusion. The test results in general showed that this type of concrete fulfilled the SCC requirements and that concrete with recycled ceramic aggregates showed higher compressive strength than conventional concrete and can act as an internal curing agent. However, the concretes with RFAs have low chloride resistance when mixed with only 100% Portland cement. |
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