Evaluation of the Gluability of Pressure Steam-Dried Wood

Yellow-poplar and red oak blanks were kiln-dried using conventional schedules and a relatively new, high-temperature, pressure steam-drying process. The blanks for each species and drying process were manufactured into five types of furniture joints. These include dowel, mortise and tenon, cross lap, edge-, and finger-joints. Differences in strength for each joint type and drying process were not significant at the 5 percent level. A shear block and bending specimen for each joint produced were also tested. Strength values for the pressure steam-dried specimens were similar to those for the conventionally dried specimens at the as-tested moisture content (MC). However, when adjusted to a common MC, the strength properties of the pressure steam-dried wood were lower than those for the conventionally dried wood, probably due to a loss of hygroscopicity of the steam-dried wood.

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