Telhas onduladas a base de cimento portland e residuos de Pinus caribaea

AUTOR(ES)
DATA DE PUBLICAÇÃO

2000

RESUMO

Pencil manufacture generates a large amount of wastes. These residues do not have an useful destination. They are usually burned provoking air pollution and energy loss. However, this wood residues could be used as a raw-material in cement based products. A studied composite demonstrated advantageous characteristics as lightweight and thermal insulation. The objective of this work was the development of an adequate wood/cement ratio using Pinus caribaea residues from the Faber Castell Industry, to be used in roofing-tiles production. Chemical compatibility between Pinus caribaea residues and Portland cement was evaluated by means of the hydration curve method. Results shows the inhibitory effect of the raw-material when mixed with cement paste. Compression strength of cylindrical specimens, was also evaluated. Results shows the influence of several parameters as cement type (CP V-ARI and CP II-E-32), wood/cement/sand/water ratio, chemical treatment (calcium chloride and aluminum sulfate), cure type (humid and steam), and raw-material type (sawdust and wax coated particles). Absorption capacity and swelling were also evaluated. Mix was selected after physico-mechanical evaluation for roofing-tiles fabrication in a Parry Associates device. Two series of roofing-tiles were produced, one with wax coated wood particles and the other with sawdust material. Both tiles were compared with the microconcrete roofing-tiles reference. Tiles composite by-products presented characteristics to be used for construction, mainly in rural areas.

ASSUNTO(S)

compostos fibrosos residuos vegetais cobertura de cimento amianto concreto cimento portland

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