Mechanical properties and sustainability aspects of coconut fiber modified concrete

Scientia et Technica Journal

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Title Mechanical properties and sustainability aspects of coconut fiber modified concrete
 
Creator Gil, Harveth
Zuleta, Alejandro Alberto
Reyes, David Esteban
 
Description Coir fiber has been examined for their suitability as reinforcement of concrete. Mechanical properties and sustainability aspects of concrete composites were estimated after 7. 14, and 28 days of curing. Natural reinforcement of 0.46 and 0.62% by weight of coir fiber was added. Fibers were analyzed by means of scanning electron microscope (SEM). Besides, an Eco-audit tool has been used to estimate energy and carbon emission of material, manufacturing, transportation, and disposal phases. It was found that fibers additions lowered the compressive strength compared to plain concrete. However, failures of the composites exhibited good post-cracking behavior. The use of vegetable fibers affects positively the life cycle of the material. Eco-audit results indicate that there is a potential to reduce between 9.15% and 13.35% of embodied energy and between 9.61% and 13.94% of CO2 during the material production phase. These suggest that coir fibers could be useful from the environmental view, although more studies regarding their durability are needed.
Fibras de coco han sido examinadas por su sostenibilidad como refuerzo de concreto. Propiedades mecánicas y aspectos sostenibles de compuestos de concreto fueron estimadas luego de 7. 14, y 28 días de curado. Se adicionaron refuerzos naturales de 0.46 y 0.62% en peso de fibra de coco. Las fibras fueron analizadas mediante microscopía electrónica de barrido (SEM). Además, una herramienta de Eco-Auditoría se utilizó para estimar la energía y emisiones de carbono en las fases de material, manufactura, transporte y disposición. Se encontró que las adiciones de fibra disminuía la resistencia a la compresión comparado con el concreto normal. Sin embargo, las fallas de los compuestos exhibieron un buen comportamiento post-agrietamiento.  El uso de fibras vegetales afecta positivamente el ciclo de vida del material. Los resultados de la Eco-auditoría indican que hay un potencial para reducir la energía incorporada entre 9.15% y 13.35% y el CO2 entre 9.61% y 13.94% durante la fase de producción del material. Esto sugiere que las fibras de coco pueden ser útiles desde el punto de vista ambiental aunque son necesarios más estudios con relación a su durabilidad.  
 
Publisher Universidad Tecnológica de Pereira
 
Date 2021-03-31
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
 
Format application/pdf
 
Identifier https://revistas.utp.edu.co/index.php/revistaciencia/article/view/22901
10.22517/23447214.22901
 
Source Scientia et Technica; Vol 26 No 1 (2021): Enero-Marzo 2021; 64-71
Scientia et Technica; Vol. 26 Núm. 1 (2021): Enero-Marzo 2021; 64-71
2344-7214
0122-1701
 
Language eng
 
Relation https://revistas.utp.edu.co/index.php/revistaciencia/article/view/22901/16487
 
Rights Derechos de autor 2021 Scientia et technica
http://creativecommons.org/licenses/by-nc-nd/4.0
 

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