Heat-Treated Wood from Grand Fir Provides the Same Quality Compared to Silver Fir

Grand fir (Abies grandis/Dougl. ex D. Don/Lindl.) represents the North American species that has potential to replace and complement some extent several commercial European species, in particular, Norway spruce silver fir. This is not only due its high production but also because of favorable effect on soil compared or pine. We tested sample trees from these tree growing same location for physical mechanical wood properties evaluated thermal treatment (180 °C 200 °C) their wood. Wood density, swelling, surface properties, strength, stiffness were used find differences among species. obtained higher values density compressive strength For remaining are comparable, except toughness, which was significantly lower grand even comparable with case strength. The resulted a decrease wettability, modulus rupture, toughness while increasing similar all From this perspective, substitute timber endangered conifers.