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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
06/07/2026 |
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Data da última atualização: |
06/07/2026 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
SOARES, E. N. C.; GARCIA, D. C. da S.; MARTINS, M. A.; GUIMARÃES JÚNIOR, J. B. |
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Afiliação: |
FEDERAL UNIVERSITY OF LAVRAS; UNIVERSIDADE FEDERAL DE MINAS GERAIS; MARIA ALICE MARTINS, CNPDIA; FEDERAL UNIVERSITY OF LAVRAS. |
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Título: |
Interfacial behavior and mechanical and microstructural properties of cement-based composites reinforced with banana, eucalyptus and sisal fibers. |
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Ano de publicação: |
2026 |
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Fonte/Imprenta: |
Construction & Building Materials, v. 507, 145075, 2026. |
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Páginas: |
15 p. |
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ISSN: |
0950-0618 |
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DOI: |
https://doi.org/10.1016/j.conbuildmat.2025.145075 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluates the influence of alkaline treatment on the properties of banana, eucalyptus and sisal fibers and their interaction with a cement-based matrix. The fibers were treated with a 5 % NaOH solution under heating and stirring for 2 h. The composite mixture was produced using agricultural limestone, additives, water and 3 % fibers (by cement mass). Scanning electron microscopy (SEM) was used to assess morphological changes in the fibers and composites, while X-ray diffraction was employed to identify crystalline phases and changes to hydration products due to the introduction of fibres., and thermogravimetric analysis was used to evaluate mass- loss behavior and thermal stability of the fiber-reinforced composites. Alkaline treatment of banana fibers reduced extractives; however, the remaining lignin (20.8 %) and extractives (6.8 %) maintained a relatively unreactive surface, resulting in only modest gains. For sisal fibers, a 30 % reduction in lignin increased structural purity, enhancing fiber–matrix adhesion and raising the modulus of elasticity (MOE) by 46.3 % compared to the untreated condition. In composites with treated eucalyptus fibers, increased water absorption and fiber swelling reduced the modulus of rupture by 9 %, although they yielded the highest MOE (7.14 GPa) and a 95 % increase in toughness among all the evaluated fibers. The SEM analyses confirmed significant morphological alterations after treatment, showing a transition from larger, spherical pores to smaller, irregular pores. According to the results of the study, the use of fibers contributes significantly to the improvement of the mechanical performance of the composites, demonstrating their potential for application in civil construction. MenosThis study evaluates the influence of alkaline treatment on the properties of banana, eucalyptus and sisal fibers and their interaction with a cement-based matrix. The fibers were treated with a 5 % NaOH solution under heating and stirring for 2 h. The composite mixture was produced using agricultural limestone, additives, water and 3 % fibers (by cement mass). Scanning electron microscopy (SEM) was used to assess morphological changes in the fibers and composites, while X-ray diffraction was employed to identify crystalline phases and changes to hydration products due to the introduction of fibres., and thermogravimetric analysis was used to evaluate mass- loss behavior and thermal stability of the fiber-reinforced composites. Alkaline treatment of banana fibers reduced extractives; however, the remaining lignin (20.8 %) and extractives (6.8 %) maintained a relatively unreactive surface, resulting in only modest gains. For sisal fibers, a 30 % reduction in lignin increased structural purity, enhancing fiber–matrix adhesion and raising the modulus of elasticity (MOE) by 46.3 % compared to the untreated condition. In composites with treated eucalyptus fibers, increased water absorption and fiber swelling reduced the modulus of rupture by 9 %, although they yielded the highest MOE (7.14 GPa) and a 95 % increase in toughness among all the evaluated fibers. The SEM analyses confirmed significant morphological alterations after treatment, showing a transition from larger, spheric... Mostrar Tudo |
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Palavras-Chave: |
Cement composites; Lignocellulosic fiber; Surface treatment; Sustainability. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02575naa a2200241 a 4500
001 2188027
005 2026-07-06
008 2026 bl uuuu u00u1 u #d
022 $a0950-0618
024 7 $ahttps://doi.org/10.1016/j.conbuildmat.2025.145075$2DOI
100 1 $aSOARES, E. N. C.
245 $aInterfacial behavior and mechanical and microstructural properties of cement-based composites reinforced with banana, eucalyptus and sisal fibers.$h[electronic resource]
260 $c2026
300 $a15 p.
520 $aThis study evaluates the influence of alkaline treatment on the properties of banana, eucalyptus and sisal fibers and their interaction with a cement-based matrix. The fibers were treated with a 5 % NaOH solution under heating and stirring for 2 h. The composite mixture was produced using agricultural limestone, additives, water and 3 % fibers (by cement mass). Scanning electron microscopy (SEM) was used to assess morphological changes in the fibers and composites, while X-ray diffraction was employed to identify crystalline phases and changes to hydration products due to the introduction of fibres., and thermogravimetric analysis was used to evaluate mass- loss behavior and thermal stability of the fiber-reinforced composites. Alkaline treatment of banana fibers reduced extractives; however, the remaining lignin (20.8 %) and extractives (6.8 %) maintained a relatively unreactive surface, resulting in only modest gains. For sisal fibers, a 30 % reduction in lignin increased structural purity, enhancing fiber–matrix adhesion and raising the modulus of elasticity (MOE) by 46.3 % compared to the untreated condition. In composites with treated eucalyptus fibers, increased water absorption and fiber swelling reduced the modulus of rupture by 9 %, although they yielded the highest MOE (7.14 GPa) and a 95 % increase in toughness among all the evaluated fibers. The SEM analyses confirmed significant morphological alterations after treatment, showing a transition from larger, spherical pores to smaller, irregular pores. According to the results of the study, the use of fibers contributes significantly to the improvement of the mechanical performance of the composites, demonstrating their potential for application in civil construction.
653 $aCement composites
653 $aLignocellulosic fiber
653 $aSurface treatment
653 $aSustainability
700 1 $aGARCIA, D. C. da S.
700 1 $aMARTINS, M. A.
700 1 $aGUIMARÃES JÚNIOR, J. B.
773 $tConstruction & Building Materials$gv. 507, 145075, 2026.
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Embrapa Instrumentação (CNPDIA) |
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| 1. |  | MAUÉS, I. P. C.; DIAS, A. P. da P.; PROVIN, E. F.; SANTANA, K. C. P.; NUNES, L. C. de M.; FERREIRA, P. A.; SANTOS, S. M. A. V. Da ideia à execução: como as tecnologias emergentes redefinem o plano de negócios digital. Cadernos Cajuína, v. 10, n. 4, 2025. Título em inglês: From idea to execution: how emerging technologies redefine the digital business plan. Título em espanhol: De la idea a la ejecución: cómo las tecnologías emergentes redefinen el plan de negocios digital.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Unidades Centrais. |
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| 2. | | MAUÉS, I. P. C.; DIAS, A. P. da P.; FERREIRA, A. D.; PROVIN, E. F.; MONTEIRO, J. de A.; NUNES, L. C. de M.; SANTOS, S. M. A. V. O impacto da tecnologia blockchain nos negócios e suas aplicações. Cadernos Cajuína, v. 10, n. 4, 2025. Título em inglês: The impact of blockchain technology on business and its applications. Título em espanhol: El impacto de la tecnología blockchain en las empresas y sus aplicaciones.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Unidades Centrais. |
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| 3. | | SANTOS, S. M. A. V.; DIAS, A. P. da P.; FERREIRA, A. D.; SOUSA, E. F. de; MENEZES, G. C.; NUNES, L. C. de M.; SEVERIANO, M. da S. F.; NUNES, S. P. Z. Resiliência e inteligência emocional: caminhos para o desenvolvimento profissional. Cadernos Cajuína, v. 10, n. 4, 2025. Título em inglês: Resilience and emotional intelligence: paths to professional development. Título em espanhol: Resiliencia e inteligencia emocional: caminos hacia el desarrollo professional.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 4 |
| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 3 | |
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