Use of Banana Fibers in SMA Mixtures
| Autor: | Ablenya Grangeiro de Barros, Adriano Elísio de Figueirêdo Lopes Lucena, Laiana Ferreira da Costa, Lêda Christiane de Figueirêdo Lopes Lucena |
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| Rok vydání: | 2020 |
| Předmět: |
Materials science
Rut Physics 0211 other engineering and technologies Resilient modulus 020101 civil engineering 02 engineering and technology Building and Construction SMA 0201 civil engineering Matrix (mathematics) Mechanics of Materials Asphalt 021105 building & construction General Materials Science Composite material Engineering sciences. Technology Civil and Structural Engineering |
| Zdroj: | Journal of materials in civil engineering |
| ISSN: | 1943-5533 0899-1561 |
| Popis: | Asphalt binder draindown is a potential issue related to stone matrix asphalt (SMA) mixtures. One convenient approach for reducing binder drainage is the use of fibers as stabilizing additives. This study assesses the feasibility of incorporating fibers from banana plants into an SMA mixture as a proposed use for residues from banana cultivation. We found the fiber content capable of preventing draindown and subsequently evaluated the influence of fiber length on the mechanical properties of an SMA mixture. Samples were prepared in a Superpave gyratory compactor with four different fiber lengths (5, 10, 15, and 20 mm) at a fixed content (0.3% by weight) and then compared to samples without fibers. Indirect tensile strength, resilient and dynamic modulus, flow number, and fatigue life tests were conducted. Overall, fibers improved the mechanical properties analyzed. These enhancements were more pronounced for the samples with 15- and 20-mm fibers. Thus, a smaller number of longer fibers was more beneficial to the fiber reinforcement of mixtures than a larger number of shorter fibers. |
| Databáze: | OpenAIRE |
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