Relationship Between Growth Stresses, Mechano-Physical Properties and Proportion of Fibre with Gelatinous Layer in Chestnut (Castanea Sativa Mill.)

Bruno Clair (1) , Julien Ruelle (1) , Bernard Thibaut (2)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 MAB - Mécanique de l'Arbre et du Bois

A range of mechanical and physical properties were carried out on 96 specimens of Chestnut wood and on wood types ranging from "compression" to tension wood; tests included (1) growth stresses, (2) longitudinal Young's modulus in green and air-dried conditions (3) shrinkage in longitudinal and tangential directions. Anatomical observations permitted determination of the proportion of fibres with a gelatinous layer. The influence of these atypical fibres on macroscopic wood properties is examined and discussed. A basic model is proposed to determine their properties in theoretically isolated conditions.

Mots clés: Growth stresses; Longitudinal Young's modulus; Shrinkage; Normal wood; Tension wood; Gelatinous layer; G-layer; Castanea Sativa

Domaines: Autre; Autre [q-bio.OT]

Bruno Clair, Julien Ruelle, Bernard Thibaut. Relationship Between Growth Stresses, Mechano-Physical Properties and Proportion of Fibre with Gelatinous Layer in Chestnut (Castanea Sativa Mill.). Holzforschung, 2003, 57, pp.189-195. ⟨10.1515/HF.2003.028⟩. ⟨hal-00004530⟩