Abstract

Pinus radiata wood was treated under hydrothermal conditions (steam) in an autoclave. The effect of temperature and time were studied. Bending strength, equilibrium moisture content, swelling and pH value of residual water were determined. Following effects were determined: a) a reduction of pH value, b) a considerable reduction of wooden mass, c) a reduction of equilibrium moisture up to 75% air humidity was registered. With higher air humidity no differences between treatments were detected, and d) with higher temperatures and longer treatment time, a reduction of bending strength was ascertained.