Preservative treatment evaluation of five Appalachian hardwoods at two moisture contents

Better documentation of the treatability of Appalachian hardwoods may lead to improved utilization of species such as beech and hickory and the lower grades of other more widely used species. Samples of yellow-poplar, red maple, red oak, hickory, and beech were pressure treated with the preservatives chromated copper arsenate Type-C (CCA-C) and ammoniac copper quat Type-B (ACQ-B) at two moisture contents: 12 percent and 17.5 percent. Mixed results indicated that treatability is affected by moisture content differently, depending on species. Practical application of this moisture content effect is questionable.

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