Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers
The incorporation of natural or recycled fibers in concrete represents a field for improvement in this structural material and a step towards sustainability. The objective of this research is to determine whether the addition of recycled carbon fibers (CFRP), which have been hardened using epoxy res...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/21/10226 |
| _version_ | 1797512821818261504 |
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| author | María Isabel Prieto María de las Nieves González Alfonso Cobo David Alonso |
| author_facet | María Isabel Prieto María de las Nieves González Alfonso Cobo David Alonso |
| author_sort | María Isabel Prieto |
| collection | DOAJ |
| description | The incorporation of natural or recycled fibers in concrete represents a field for improvement in this structural material and a step towards sustainability. The objective of this research is to determine whether the addition of recycled carbon fibers (CFRP), which have been hardened using epoxy resin, improves the behavior of concrete and whether its performance is comparable to that achieved by adding polypropylene fibers, which would result in a viable recycling alternative for this type of fiber. In order to explore this objective, 120 specimens were produced, on which compression, flexural, and impact tests were performed, and into which recycled CFRP fibers or polypropylene fibers were incorporated. By comparing the results obtained, it may be concluded that the addition of fibers substantially improves the ductility of the concrete and reduces the spalling effect when compared to concretes without added fibers. The concretes containing recycled CFRP fibers in quantities of 3 kg/m<sup>3</sup> and 6 kg/m<sup>3</sup> obtain better flexural and impact behaviors than concretes featuring the same amounts of polypropylene fibers, making this recycling alternative viable for CFRP fibers as well as reducing the amount of energy and raw materials that would be used to manufacture the fibers. |
| first_indexed | 2024-03-10T06:07:05Z |
| format | Article |
| id | doaj.art-f36b0ca6033a4311895f5bdbbc11db38 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T06:07:05Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-f36b0ca6033a4311895f5bdbbc11db382023-11-22T20:29:39ZengMDPI AGApplied Sciences2076-34172021-11-0111211022610.3390/app112110226Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene FibersMaría Isabel Prieto0María de las Nieves González1Alfonso Cobo2David Alonso3Escuela Técnica Superior de Edificación, Universidad Politécnica de Madrid, Avda. Ramiro de Maeztu, 7, 28040 Madrid, SpainEscuela Técnica Superior de Edificación, Universidad Politécnica de Madrid, Avda. Ramiro de Maeztu, 7, 28040 Madrid, SpainEscuela Técnica Superior de Edificación, Universidad Politécnica de Madrid, Avda. Ramiro de Maeztu, 7, 28040 Madrid, SpainEkora Rehabilitación, S.L., C/Kandelazubieta N°1, 48940 Leioa, SpainThe incorporation of natural or recycled fibers in concrete represents a field for improvement in this structural material and a step towards sustainability. The objective of this research is to determine whether the addition of recycled carbon fibers (CFRP), which have been hardened using epoxy resin, improves the behavior of concrete and whether its performance is comparable to that achieved by adding polypropylene fibers, which would result in a viable recycling alternative for this type of fiber. In order to explore this objective, 120 specimens were produced, on which compression, flexural, and impact tests were performed, and into which recycled CFRP fibers or polypropylene fibers were incorporated. By comparing the results obtained, it may be concluded that the addition of fibers substantially improves the ductility of the concrete and reduces the spalling effect when compared to concretes without added fibers. The concretes containing recycled CFRP fibers in quantities of 3 kg/m<sup>3</sup> and 6 kg/m<sup>3</sup> obtain better flexural and impact behaviors than concretes featuring the same amounts of polypropylene fibers, making this recycling alternative viable for CFRP fibers as well as reducing the amount of energy and raw materials that would be used to manufacture the fibers.https://www.mdpi.com/2076-3417/11/21/10226recycled CFRP fiberspolypropylene fibersconcretecompressionflexuralimpact |
| spellingShingle | María Isabel Prieto María de las Nieves González Alfonso Cobo David Alonso Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers Applied Sciences recycled CFRP fibers polypropylene fibers concrete compression flexural impact |
| title | Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers |
| title_full | Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers |
| title_fullStr | Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers |
| title_full_unstemmed | Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers |
| title_short | Comparison of the Mechanical Behavior of Concrete Containing Recycled CFRP Fibers and Polypropylene Fibers |
| title_sort | comparison of the mechanical behavior of concrete containing recycled cfrp fibers and polypropylene fibers |
| topic | recycled CFRP fibers polypropylene fibers concrete compression flexural impact |
| url | https://www.mdpi.com/2076-3417/11/21/10226 |
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