Multi-recycling of polypropylene fibre reinforced concrete: Influence of recycled aggregate properties on new concrete
| Autor: | Tošić, Nikola, Peralta Martínez, Dorca, Hafez, H.S., Reynvart, Igor, Ahmad, Muneer, Liu, Guanzhi, Fuente Antequera, Albert de la |
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| Přispěvatelé: | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental, Universitat Politècnica de Catalunya. Doctorat en Enginyeria de la Construcció, Universitat Politècnica de Catalunya. EC - Enginyeria de la Construcció |
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
recycled concrete
density behavior Aggregate (Building materials) -- Recycling Recycled concrete Àrids (Materials de construcció) -- Reciclatge Density Enginyeria civil::Materials i estructures::Materials i estructures de formigó [Àrees temàtiques de la UPC] Building and Construction recycled fibre macro-synthetic fibre Macro-synthetic fibre. Recycled fibre. Mix design residual strength Fiber reinforced concrete Residual strength fiber reinforced concrete water absorption Water absorption General Materials Science mix design Civil and Structural Engineering |
| Zdroj: | UPCommons. Portal del coneixement obert de la UPC Universitat Politècnica de Catalunya (UPC) Construction and Building Materials |
| Popis: | Herein, an investigation of multi-generational recyclability of polypropylene fibre reinforced concrete (PPFRC) was performed. The parent concretes were produced with 0 and 6 kg/m3 of polypropylene fibres. After recycling, the obtained coarse recycled concrete aggregates (RCAs) were used in new concrete with 0 and 6 kg/m3 of polypropylene fibres, repeating for three generations always with the same quantities of fibres. Properties of RCA, the mechanical properties of recycled aggregate concrete, the recovery rate of polypropylene fibres and the content of fibres embedded within the RCA were measured. The results of the study show that RCA obtained by PPFRC recycling offers significant benefits to new concrete production. This is achieved through the recovered fibres reintroduced into the new concrete, as well as through the fibres embedded in the recycled aggregates, leading to increased residual tensile strength. This study has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 836270. This support is gratefully acknowledged. The authors also wish to express their acknowledgement to the Ministry of Economy, Industry and Competitiveness of Spain for the financial support received under the scope of the projects PID2019-108978RB-C32. Any opinions, findings, conclusions, and/or recommendations in the paper are those of the authors and do not necessarily represent the views of the individuals or organizations acknowledged. |
| Databáze: | OpenAIRE |
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