Performance of Alfa Fibres in Cementitious Materials Exposed to Diverse Surface Treatments
Author:
Ajouguim Soukaina1, Page Jonathan1, Djelal Chafika1, Waqif Mohamed2, Saadi Latifa2
Affiliation:
1. Univ. Artois, Laboratoire de Génie Civil et géo-Environnement (LGCgE) 2. Univ. Cadi Ayyad, Matériaux innovants
Abstract
Alfa plant presents a great ecological and socio-economic interest in the Maghreb countries. It is used in several fields of applications such as craft production and paper industry. However, a few research work has been realized on the valorisation of Alfa fibres in the construction sector. The main objective of this work is to develop an Alfa fibre-reinforced mortar with significant mechanical properties for the facade panel’s manufacturing. It was highlighted that Alfa fibres enhance the flexural strength of reinforced mortars. Therefore, a decrease in the flexural strength of the composite after 90 days of curing. In addition, the incorporation of Alfa fibres reduced the compressive strength of the composite. In this regard, to enhance the mechanical properties of the composite, various treatments were explored: alkaline treatment with sodium hydroxide, hydrothermal treatment by water boiling, and coating with sulfoaluminate cement. It was noted that the treatments could provide a partial elimination of the non-cellulosic components and enhance the Alfa fibre roughness. Raw and treated Alfa fibres were incorporated into cement mortars at different lengths of the (10 and 20 mm) with an addition ratio of 1 %vol.. Compared to untreated fibres, fibres treated chemically provide an improvement of 38 % of the flexural strength at 28 days for both fibres length. Unlike the coated fibres, the efficiency of treatment was noted at 90 days of curing. Otherwise, a slight increase in compressive strength was observed compared to the untreated fibres mortar. These results were approved by porosity accessible to water and calorimetric tests.
Publisher
Trans Tech Publications Ltd
Reference21 articles.
1. Ajouguim, S., Abdelouahdi, K., Waqif, M., Stefanidou, M., Saâdi, L., 2019a. Modifications of Alfa fibers by alkali and hydrothermal treatment. Cellulose 26, 1503–1516. https://doi.org/10.1007/s10570-018-2181-9. 2. Ajouguim, S., Page, J., Djelal, C., Waqif, M., Saâdi, L., 2020. Investigation on the use of grinded Alfa fibres as reinforcement of cement mortars. Proceedings of the Institution of Civil Engineers - Construction Materials 1–31. https://doi.org/10.1680/jcoma.20.00001. 3. Ajouguim, S., Page, J., Djelal, C., Waqif, M., Sâadi, L., 2019b. Formulation d'un composite cimentaire incorporant des fibres d Alfa : Influence de la longueur et du taux de fibres, in: 37èmes Rencontres de l'AUGC, École d,ingénieur Polytech Nice Sophia. p.222–226. 4. Ardanuy, M., Claramunt, J., García-Hortal, J.A., Barra, M., 2011. Fiber-matrix interactions in cement mortar composites reinforced with cellulosic fibers. Cellulose 18, 281–289. https://doi.org/10.1007/s10570-011-9493-3. 5. Belkadi, A.A., 2018. Contribution à l'étude de la durabilité et les performances des bétons autoplaçants (fibres végétales, milieu agressif, formulation, modélisation (PhD Thesis). Universé Mohamed Khider Biskra.
Cited by
4 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|