Development of a stabilized natural fiber-reinforced earth composite for construction applications using 3D printing

• Autores: Silva G., Quispe L., Kim S., Nakamatsu J., Aguilar R.
• Formato: artículo
• Fecha de Publicación: 2019
• Institución: Consejo Nacional de Ciencia Tecnología e Innovación
• Repositorio: CONCYTEC-Institucional
• Lenguaje: inglés
• OAI Identifier: oai:repositorio.concytec.gob.pe:20.500.12390/2680
• Enlace del recurso: https://hdl.handle.net/20.500.12390/2680; https://doi.org/10.1088/1757-899X/706/1/012015
• Nivel de acceso: acceso abierto
• Materia: Geopolymers; Costs; Deposition; Environmental protection; Fiber reinforced materials; Fibers; http://purl.org/pe-repo/ocde/ford#2.11.04

The application of additive manufacturing technologies to the construction industry has a wide range of advantages from the economic, social and design flexibility point of view. However, most of up to date research studies have been performed using ordinary Portland cement (OPC)-based mortars and concretes. Therefore, the objective of this article is to explore the development of an eco-friendly earth composite reinforced with natural sisal fibers and chemically stabilized with a hydraulic binder. Analysis of the workability by shear vane tests was performed on fresh earth samples to find the optimum water content in sisal fiber-reinforced earth stabilized with OPC. Afterward, the effect of the addition of OPC on the hardening process was evaluated through shear vane and Vicat needle tests from 0 to 180 min after mixing. The results indicate that water content, fiber addition and OPC replacement have a strong influence on the shear yield strength. Furthermore, the presence of chemical stabilizers as OPC accelerates the hardening process allowing a faster layer-by-layer deposition. This low cost and eco-friendly preliminary earth-based composite can be used for 3D printing applications in the construction industry. © Published under licence by IOP Publishing Ltd.