Abstract
There has been ever growing interest in the construction industry in using lighter, eco-friendly and sustainable materials, while maintainingthe desirable mechanical properties. The objective of the present work was to evaluate the effects of pre-treatments on chemical compatibility between Curaua fiber (Ananas erectifolius) and Portland cement. In the inhibition test, cement hydration temperature evolution wasmeasured in the absence and presence of untreated and treated Curaua fibers (cold water, hot water and NaOH). The chemical characterization of untreated Curaua fibers was done by determining the content of extractives, lignin, holocellulose and ashes. Thee Segal's method was used for determinate the crystallinity index on untreated and treated fibers. The inhibition test graded the untreated fiber as high inhibition, showing the need to provide it a treatment. Treatments done on Curaua fibers removed some amorphous components of the fibers affected positively the compatibility between cement and fiber, and reducing the inhibition. Keywords: Inhibition; chemical components; crystallinity; Ananas erectifolius.
Highlights
The physical and mechanical properties of cement-fiber panels, in addition to the facility of being sawn, glued, and nailed, are indicators of these composites applications
The chemical composition [9, 10,11] and other properties such as the crystallinity index and the chemical compatibility have a direct effect on the products made with lignocellulosic material[12,13], especially when these materials were used in the construction in the form of cement composites[1, 2, 3]
3.1 Chemical composition of the fibers The results from the chemical analyses are shown in Table 3: Table 3: Chemical characterization of Curauá fiber
Summary
The physical and mechanical properties of cement-fiber panels, in addition to the facility of being sawn, glued, and nailed, are indicators of these composites applications. These characteristics allow them to be painted, rough casted, and coated with other types of materials. The versatility of the composite allows manufacturers to add value to the product by delivering it in sanded, painted, or coated forms With this versatility, the composites can be used directly with finishing material. The chemical composition [9, 10,11] and other properties such as the crystallinity index and the chemical compatibility have a direct effect on the products made with lignocellulosic material[12,13], especially when these materials were used in the construction in the form of cement composites[1, 2, 3]. The higher crystalline index results in the higher the density, rigidity, dimensional stability and chemical resistance properties [19]
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
