Moisture diffusion coefficient of reaction woods: compression wood of Picea abies L. and tension wood of Fagus sylvatica L. - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Wood Science and Technology Année : 2012

Moisture diffusion coefficient of reaction woods: compression wood of Picea abies L. and tension wood of Fagus sylvatica L.

Résumé

The moisture diffusion coefficient of compression wood in spruce (P. abies) and tension wood in beech (F. sylvatica) was examined. The results indicated that the diffusion coefficient measured under steady-state condition (cup method) could well characterize the drying kinetics of the reaction woods. The compression wood offered more resistance to the moisture diffusivity when compared with the corresponding normal wood. The thick cell wall rich in lignin explains the small mass diffusivity in compression wood. In contrast, the mass diffusivity in beech is almost always higher in tension wood than in normal wood, in spite of similar density values. The high moisture diffusion in tension wood can be explained by the ease of bound water diffusion in the gelatinous layers (G-layers).

Dates et versions

hal-01264354 , version 1 (29-01-2016)

Identifiants

Citer

Asghar Tarmian, Romain Remond, Hadi Dashti, Patrick Perre. Moisture diffusion coefficient of reaction woods: compression wood of Picea abies L. and tension wood of Fagus sylvatica L.. Wood Science and Technology, 2012, 46 (1-3), pp.405-417. ⟨10.1007/s00226-011-0413-3⟩. ⟨hal-01264354⟩
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