Abstract:

Abstract: In this paper, the effects of high temperature heat treatment at 185 ℃ in commercial scale on mechanical properties of ash ( Fraxinus mandshurica ) wood were investigated. The results showed that there was no visible difference between modulus of elasticity (MOE) in tangential direction and that in radial direction of treated wood, which was the same to the reference. There were negative effects on modulus of rupture (MOR) in tangential direction and partial compressive stress perpendicular to the grain of ash wood by this method, but had hardly any effects on MOE in tangential direction, compressive strength parallel to the grain, surface hardness, etc.. If comparing the mechanical properties of treated wood with the reference in service condition, it was concluded that the above mechanical properties of treated wood were better than the reference except for MOR in tangential direction.

Key words: Key words: high temperature heat treatment, commercial scale, ash ( Fraxinus mandshurica ), blank for solid wood flooring, mechanical properties