Bamboo laminate composites could be the alternative materials in outdoor application. However, the life time prediction of this composite in humid environment became a concern considering hydrophilic property of the bamboo fibre. This research aimed to assess the changes of mechanical properties in the composite with the sorption of water. It employed hand lay-up method in developing the laminate composites with epoxy as the matrix and woven bamboo as the reinforced material. Water sorption characteristic was evaluated through a gravimetric analysis for different water immersion temperatures. The sorption on water was studied by four weeks immersion in room temperature as well as in elevated temperatures of 50∘ and 80∘C. Tensile test was performed to evaluate the mechanical properties of the composite. This research clearly showed the significant effect of bamboo fibre on the strength and water sorption behaviour of the composites. It was observed that the rate of water absorption depends on temperature of immersion. Larger debonding between the bamboo fibre and the epoxy matrix was found in higher water immersion temperature. The results of this study emphasized the importance of considering the deterioration of mechanical properties in outdoor applications of bamboo composite highly exposed to high temperature and humidity
The use of bamboo fiber in reinforced concrete beam to reduce crack AIP Conference Proceedings 1887, 020003 (2017) Abstract. The hydrophilic character is a major concern in the development of natural fibre reinforced-polymer composites. As hydrophilic material which easily absorbs water, the water content inside bamboo fibres should be carefully controlled to produce bamboo composite possessing acceptable mechanical properties. The bamboo fibres provide a reservoir of water which diffuses into the interfacial region of epoxy matrix. Different hydrophilicity between bamboo fibres and the polymer matrix affects the fibre matrix adhesion which in turn influences the physical and mechanical performances of the composites. This article provides a short review on the current progress of bamboo-based polymer composite development. Further this present review discusses several treatments for bamboo fibres in order to improve the fibre-matrix adhesion and the effects on the moisture sensitivity mechanical performance of resulted composites. Those treatments aim not only to change the hydrophilic character of bamboo fibre but also to bring about the hydrophobic properties to the fibres. It is expected that the potential of bamboo material could be fully exploited as an alternative natural fibre reinforced material for polymer-based composites in wider application.
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