EVALUATION OF THE COLOR CHANGES IN ARTIFICIALLY AGED PINE

• DOI: Atena

• Palavras-chave: Atena

• Keywords: Aging; Color; Weathering; Wood.

• Abstract:

  Pine wood is widely used in civil

  construction due to its physical, mechanical and

  organoleptic properties, and the reforestation.

  Woods are often used in buildings subject to

  weathering actions such as ultraviolet light,

  rainfall and humidity, and may cause changes

  in the color of the material evidencing some

  chemical attack. Artificial weathering machines

  are commonly used for accelerated aging of

  materials, aiming the study of their performance

  in outdoor use. The objective of this work was

  to evaluate the color change in the CIELAB

  standard of samples of Pine wood subjected to

  artificial weathering for 96, 192 and 384 hours

  in relation to the control. Results of ΔE and

  coefficient of variation were 79.92 and 0.91%,

  69.52 and 1.54%, 70.27 and 1.95%, 70.50 and

  0.87% for the controls and the three treatments,

  respectively. According to the results of the

  tests, as well as of the statistical analyses, it was

  possible to conclude that the treated samples

  were darkened in relation to the control, but the

  equivalence of colors of the aged samples.

• Número de páginas: 15