Use este identificador para citar ou linkar para este item: http://repositorio.ufla.br/jspui/handle/1/34019
Título: Compósitos à base de cimento e gesso reforçados com partículas de madeira de Eucalyptus grandis
Título(s) alternativo(s): Composites based on cement and plaster reinforced with wood particles of Eucalyptus grandis
Palavras-chave: Painéis de gesso
Painéis de madeira
Análise química
Propriedades físicas e mecânicas
Plasterboard
Wood panels
Chemical analysis
Physical and mechanical properties
Data do documento: 2018
Editor: Universidade Federal de Pelotas
Citação: MESQUITA JÚNIOR, L. et al. Compósitos à base de cimento e gesso reforçados com partículas de madeira de Eucalyptus grandis. Ciência da Madeira, Pelotas, v. 9, n. 3, p. 191-198, 2018.
Resumo: The objective of this study was to produce and evaluate physically and mechanically composites of plaster-wood and cement-wood using particles of Eucalyptus grandis, in order to analyze the possible replacement of the cement by the gypsum as a binder, in order to reduce the cure time. The panels were produced in metal molds with dimensions of 25 x 25 x 1,5 cm (LxLxA), nominal density of 1,2 g. cm- ³ and a ratio of 1:2,75 (wood: plaster) and water-plaster of 1:0,4. Reference panels were produced using the CP V-ARI Portland cement as a binder. Calcium chloride (CaCl²) was used as the catalyst to accelerate hydration. The results indicated that the panels did not show significant statistical differences in density, water absorption and swelling in thickness both after 2 and 24h of immersion in water, modulus of elasticity for flexion and parallel compression. The cement-wood panels obtained higher values in moisture retention, modulus of rupture for static bending test and internal bonding. These results demonstrate that the use of gypsum as a binder may be feasible and further studies on the loss of mechanical resistance of gypsum in contact with moisture are required.
URI: http://repositorio.ufla.br/jspui/handle/1/34019
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