Technologische Untersuchungen an Pinus radiata-Importhölzern aus Chile |
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Authors: | F W Bröker |
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Affiliation: | (1) Institut für Holzphysik und mechanische Technologie des Holzes, Bundesforschungsanstalt für Forst-und Holzwirtschaft, Hamburg-Reinbek |
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Abstract: | Technological investigations on small clear, samples of radiata pine timber from Chile have shown lower average densities and moduli of elasticity than conifers from Central Europe. Only bending strength has been higher as compared to spruce and fir; however, the individual values scatter considerably. Piloting investigations on structural timber indicate that the grading criteria according to DIN 4074 are in principle also applicable to radiata pine. Average bending strength and particularly Young's modulus of elasticity of the structural timber investigated were lower than the comparative values of spruce. Swelling and shrinkage caused by changes in moisture are lower as compared to spruce and European redwood. |
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