COLORIMETRIC PARAMETERS OF BRAZILIAN TROPICAL WOOD SPECIES

• DOI: Atena

• Palavras-chave: Atena

• Keywords: Brazilian wood species; Color; Colorimetric parameters; Timber structures.

• Abstract:

   Wood properties determination is

  fundamental for the knowledge and based their

  use for several purposes. Wood`s color is an

  important characteristic of this material, because,

  through it, is possible to verify biodegradation,

  to name a group of species and identify wood.

  The aim of this research was to determine the

  colorimetric parameters of two Brazilian Tropical

  Wood species: Cambará (Erisma uncinatum)

  and Cajueiro (Anacardium giganteum). Twelve

  compression parallel to grain specimens were

  prepared according to Brazilian Code ABNT

  NBR 7190:1997 – Annex B, with 12% of moisture

  content. Based on ASTM D2244:2011, for each

  specimen, the follow colorimetric parameters:

  L* (luminosity) axis that ranges between white

  and black; a* (shade in the color) axis that

  ranges between red and green; and b* (shade

  in the color) axis that ranges between yellow

  and blue, were determined, by a Konica Minolta

  CR-400 portable colorimeter based on the CIE

  L*a*b* system. Using a* and b*, two parameters

  can be determined: hue angle (h) and chroma

  (C). More researches to determine colorimetric

  parameters and their relationships with anothers

  properties of the wood are required.

• Número de páginas: 15