Properties of Northern Aspen Discolored Wood Related to Drying Problems

J. F. G. Mackay


Discolored wood isolated from the inner sapwood area of trembling aspen and balsam poplar shrinks more and is weaker in compression perpendicular-to-the-grain, than adjacent normal sapwood. When the green moisture content is higher than that of adjacent normal wood, then the drying rate (E-value) is slower. Excessive shrinkage and wet pockets may be anticipated during kiln-drying; therefore drying practices must be adapted to allow for these difficulties.


<i>Populus trenmuloides</i>;<i>Populus balsamifera</i>;kiln-drying;shrinkage;collapse;compression strength;drying rate

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