Durability of natural fibers reinforced calcium aluminate cement matrices
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Document typeConference report
Defense date2017
Rights accessRestricted access - publisher's policy
Abstract
In this paper we describe a study of the durability of calcium aluminate cement (CAC) reinforced with nano- and micro- cellulose fibers. The nanocelluloses were in the form of nanofibrillated cellulose -obtained from sisal pulp by the application of a high intensity refining process- or as nanocrystals –obtained from acid hydrolysis of pure microcellulose. The setting time (Vicat), strength development (flexural strength), and durability to aging (wet/dry cycles and scanning electron microscopy analysis) were studied. The results have show that the presence of fibers in the matrices modifies the setting times towards reducing them; the mechanical behavior was found better in the fiber CAC matrices compared with CAC mortars. Regarding the durability tests, CAC cementitious systems keep intact the mechanical properties of the fibers. SEM photographs of fracture section show the surface of the fibers with very little state of degradation. These results would indicate that the absence of calcium hydroxide prevents the chemical degradation of cellulose.
CitationFernandez-Carrasco, L., Claramunt, J., Ardanuy, M. Durability of natural fibers reinforced calcium aluminate cement matrices. A: International Conference on Bio-based Building Materials. "ICBBM 2017 Proceedings of the 2nd International Conference on Bio-Based Building Materials". Clermont-Ferrrand: 2017, p. 463-467.
ISBN978-2-35158-192-6
Collections
- Departament d'Enginyeria Civil i Ambiental - Ponències/Comunicacions de congressos [896]
- TECTEX - Grup de recerca en Tecnologia Tèxtil - Ponències/Comunicacions de congressos [38]
- LiTA - Laboratori d'Innovació i Tecnologia en l'Arquitectura - Ponències/Comunicacions de congressos [82]
- Departament de Ciència dels Materials i Enginyeria Metal·lúrgica - Ponències/Comunicacions de congressos [283]
- Departament d'Enginyeria Agroalimentària i Biotecnologia - Ponències/Comunicacions de congressos [553]
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