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Nature and performance of tropical wood natural fibre cementitious composites
The 12 commercially available tropical wood natural fibre species and their cementitious composites were thoroughly studied for possible production of natural fibre cementitious composites (NFCC), through 1) the determination of chemical constituents of the fibre species, 2) determination of compatibility of natural fibre cement and correlation of the compatibility with chemical constituents, and 3) examination of mechanical property of NFCC and its correlation with the compatibility and chemical constituents of wood natural fibres. The results showed that 1) the chemical constituents of the 12 tropical wood fibrous materials varied considerably from one to another fibre species, with cellulose content ranging between 40 and 57%, lignin between 21 and 34% and solubility between 2.40 and 29.06% depending on the type of solutions. 2) pH values were below 7 for all natural fibres tested (pH 3.36-6.22) and the ABR values were no more than 1, indicating that the BBC values were higher than the ABC values. 3) The compatibility reduced as the wood natural fibre content increased and was polynomially correlated to the solubility of the wood natural fibre species. 4) Mechanical properties of NFCC decreased with increased fibre content, with the highest bending strength (7.21 MPa) and compressive strength (33.18 MPa) for movingui NFCC corresponding to the lowest hot water and Ca(OH)2 solubility, and lowest bending and compressive strength (0 MPa) for both moabi and doussie NFCC to their highest solubility contents. 5) The best five natural fibre species studied for NFCC were movingui, nkanang, eyong, tali and padauk, while the least suitable two were moabi and doussie. The results have provided fundamental and essential database and technologies for better understanding tropical wood natural fibre species, utilising them as value added commercial products in construction industry and further academic research.
Nature and performance of tropical wood natural fibre cementitious composites
The 12 commercially available tropical wood natural fibre species and their cementitious composites were thoroughly studied for possible production of natural fibre cementitious composites (NFCC), through 1) the determination of chemical constituents of the fibre species, 2) determination of compatibility of natural fibre cement and correlation of the compatibility with chemical constituents, and 3) examination of mechanical property of NFCC and its correlation with the compatibility and chemical constituents of wood natural fibres. The results showed that 1) the chemical constituents of the 12 tropical wood fibrous materials varied considerably from one to another fibre species, with cellulose content ranging between 40 and 57%, lignin between 21 and 34% and solubility between 2.40 and 29.06% depending on the type of solutions. 2) pH values were below 7 for all natural fibres tested (pH 3.36-6.22) and the ABR values were no more than 1, indicating that the BBC values were higher than the ABC values. 3) The compatibility reduced as the wood natural fibre content increased and was polynomially correlated to the solubility of the wood natural fibre species. 4) Mechanical properties of NFCC decreased with increased fibre content, with the highest bending strength (7.21 MPa) and compressive strength (33.18 MPa) for movingui NFCC corresponding to the lowest hot water and Ca(OH)2 solubility, and lowest bending and compressive strength (0 MPa) for both moabi and doussie NFCC to their highest solubility contents. 5) The best five natural fibre species studied for NFCC were movingui, nkanang, eyong, tali and padauk, while the least suitable two were moabi and doussie. The results have provided fundamental and essential database and technologies for better understanding tropical wood natural fibre species, utilising them as value added commercial products in construction industry and further academic research.
Nature and performance of tropical wood natural fibre cementitious composites
Fan, Mizi (author) / Korndikontar, Maurice (author) / Dinwoodie, John (author)
2012
13 Seiten, 3 Bilder, 5 Tabellen, 30 Quellen
Conference paper
English
Naturfaser , Holzfaser , Cellulose , Lignin , Komposit , Fasergehalt , pH-Wert , Druckfestigkeit , Warmwasser , Biegefestigkeit , Bauindustrie , Zement
Nature and Performance of Tropical Wood Natural Fiber Cementitious Composites
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