Thermophysical characterisation of tropical wood used as building materials : with respect to the basal density

Ngohe-Ekam P.S., Meukam P., Menguy G., Girard Philippe. 2006. Thermophysical characterisation of tropical wood used as building materials : with respect to the basal density. Construction and Building Materials, 20 : 929-938.

https://doi.org/10.1016/j.conbuildmat.2005.06.017

Article de revue ; Article de revue à facteur d'impact

Version publiée - Anglais
Accès réservé aux personnels Cirad
Utilisation soumise à autorisation de l'auteur ou du Cirad.
document_535336.pdf
Télécharger (513kB)

Résumé : An experimental study has been carried out to determine thermophysical properties of tropical wood. Five species, covering a wide range of densities of most of the wood used in Central Africa, has been chosen. These properties which characterise the thermally insulating materials, are related to basal density in order to help predict the thermophysical properties of any tropical wood as soon as its basal density is known. Steady-state and unsteady state methods were used to measure thermal conductivity and thermal diffusivity, respectively. Specific heat and thermal effusivity were then calculated. The influences of moisture content and the principal cutting plan on the thermophysical properties of tropical wood were examined. Higher conductivity, diffusivity and effusivity in the axial direction were observed, as well as the non-directional dependence character of the specific heat. It was also observed that thermal conductivity of tropical wood increases with infradensity both in the axial and the transverse directions. Finally, it was shown that conductivity and effusivity increase and thermal diffusivity decreases with the increase of moisture content. © 2005 Elsevier Ltd. All rights reserved.

Mots-clés Agrovoc : bois de charpente, propriété physicochimique, teneur en eau, humidité relative, densité, propriété thermique

Mots-clés complémentaires : Bois d'oeuvre

Classification Agris : K50 - Technologie des produits forestiers

Champ stratégique Cirad : Hors axes (2005-2013)

Auteurs et affiliations