EFFECT OF PRESS TEMPERATURE ON SOME PROPERTIES OF CEMENT BONDED PARTICLEBOARD


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Yel H. , Cavdar A. D. , Torun S. B.

MADERAS-CIENCIA Y TECNOLOGIA, vol.22, no.1, pp.83-92, 2020 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 22 Issue: 1
  • Publication Date: 2020
  • Doi Number: 10.4067/s0718-221x2020005000108
  • Title of Journal : MADERAS-CIENCIA Y TECNOLOGIA
  • Page Numbers: pp.83-92

Abstract

It is known that there is a correlation between hydration heat and physico-mechanical properties of wood based cement panels. Cement hydration is affected by many variables, such as chemical composition, water/ cement ratio, wood/cement ratio, wood chemical properties, mineral additions and producing conditions. This study mainly aimed to investigate the effects of press temperature on some properties of three-layer cement bonded particleboard made from the particles of spruce (Picea orientalis) and poplar (Populus tremula). For this purpose, a total of 16 experimental board groups with 1200 kg/m(3) target density and 1/3 wood-cement ratio were produced at the press temperatures of (20, 30, 40, 50, 60, 70 and 80) degrees C. As cement curing accelerator, CaCl2 was used at a rate of 5 % (cement weight basis). The physical, mechanical and thermal properties of the boards were determined. The results indicated that the press temperature substantially affected the properties of cement-bonded particleboard depending on the wood species. In the light of this study, the optimum temperatures in producing of cement-bonded particleboard were found as 40 degrees C for poplar wood and 60 degrees C for spruce wood.