Caracterização do compósito cimentício com a adição de particulados de madeira - Espécie Pinus Taeda

AUTOR(ES)
DATA DE PUBLICAÇÃO

2004

RESUMO

The purpose of this paper is to evaluate the performance of cement composite with the addition of vegetable particle. Raw materials were characterized according to granulometry, organic contamination, clay content, pulverulent material. Wood particles of Pinus Taeda species were mixed with sand, gravel, Portland CP V ARI RS cement and water. Samples 512 were produced, with the objective of studying the interference of vegetables particles, along with variations in the content of wood particles. The performance of these composites were evaluate within 7 and 28 days; natural and forced aging. Samples tested within 7 and 28 days were kept in laboratory environment until the moment the test was conduced. Samples submitted to natural aging remained 120 days subject to external environment and 200 to protect environment, while samples with forced aging had 10, 15, 30 and 60 wet and dry cycles. Composite were evaluated regarding their physical properties (water absorption, density and porosity both apparent); mechanical (strength to compression); microstructure (scanning electronic microscopy) and mineralogical (X-rays diffraction). From a general analysis of results, it was verified that addition of wood, particles of the Pinus Taeda species does influence the initial reactions of Portland cement, and caused some changes in the research, it was possible to obtain a theory productivity of approximately 20,4% when compared to the composite without addition of wood. Even though it permits lowers costs, the incorporation of wood particles presents on one hand less maximum strength to rapture and apparent density, while on the other hand higher apparent porosity and water absorption. Therefore careful dosage of addition, enhances productivity when compared to traditional materials used n housing. It is a good application option in the construction industry though new materials in favour of the low-income population.

ASSUNTO(S)

compósitos poliméricos; resíduos polimeros cimento portland pinus taeda madeira

ACESSO AO ARTIGO

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