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    Author(s): David E. Kretschmann; Steven M. Cramer
    Date: 2007
    Source: Proceedings of the Compromised Wood Workshop, 2007 January 29-30. Christchurch, NZ : Wood Technology Research Centre, School of Forestry, University of Canterbury, 2007: pages 215-236.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (730 KB)

    Description

    The role of tree ring location and height within tree has a very significant impact on the properties of earlywood and latewood. This paper explores the role of earlywood and latewood properties on the dimensional stability of loblolly pine. Test results from isolated 1 mm by 1 mm by 30 mm pieces of earlywood and latewood show the differences in earlywood and latewood make different contributions to the stability of timber. Latewood is more sensitive to changes in moisture and shrinks longitudinally differently than earlywood. Influencing the proportion and properties of latewood can have a significant impact on the dimensional stability of wood. Determining hemicellulose chemistry may be a tool to identify material that is susceptible to high longitudinal shrinkage.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Kretschmann, David E.; Cramer, Steven M. 2007. The role of earlywood and latewood properties on dimensional stability of loblolly pine. Proceedings of the Compromised Wood Workshop, 2007 January 29-30. Christchurch, NZ : Wood Technology Research Centre, School of Forestry, University of Canterbury, 2007: pages 215-236.

    Keywords

    Wood chemistry, wood anatomy, mechanical properties, wood moisture, hemicellulose, juvenile wood, tree rings, shrinkage, latewood, earlywood, loblolly pine, dimensional stability, moisture content

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