Shrinkage of Outerwood, Middlewood, and Corewood of Two Sweetgum Trees


  • Todd F. Shupe
  • Elvin T. Choong
  • Mark D. Gibson


Moisture content, shrinkage, specific gravity, sweetgum


Two sweetgum (Liquidambar styraciflua L.) trees were used to determine the shrinkage properties of green outerwood, middlewood, and corewood. Samples were taken at various heights along the boles from each side of a disk. Shrinkage displayed the following general pattern: corewood > middlewood > outerwood. This pattern was reversed for the specific gravity of samples from each of these wood types from tree 1, but tree 2 maintained a relatively uniform specific gravity among wood types.


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