Farshid Abdoli - Department of Wood and Paper Science and Technology, Tarbiat Modares Universit, Noor, Iran
Behbood Mohebby - Department of Wood and Paper Science and Technology, Tarbiat Modares Universit, Noor, Iran
Saeed Kazemi-Najafi - Department of Wood and Paper Science and Technology, Tarbiat Modares Universit, Noor, Iran

In this study, the effect of oil heat treatment on the creep behavior of beech wood (Fagus orientalis) was examined. At first, some blocks of beech wood with ۱۲۰ × ۲۰ × ۵ cm (Longitudinal × Tangential × Radial, respectively) dimensions were prepared. And then, blocks were treated with soybean oil in an oil heat treatment reactor. Treatment of blocks was carried out at temperatures of ۱۸۰˚C and ۲۰۰˚C, and holding times of ۱۲ and ۱۵ h were considered. The equilibrium moisture content due to cyclic relative humidity of ۶۰ and ۹۰ percent, relative creep, modulus of elasticity, and anti-creep efficiency were investigated. The results showed that oil heat treatment decreased relative creep and the equilibrium moisture content. It was also revealed that oil heat treatment increased the anti-creep efficiency of beech wood.

Oil heat treatment, Cyclic moisture changes, Relative creep, Anti-creep efficiency.