PRESERVATIVE TREATMENT EVALUATION WITH CCA AND ACQ-B OF FOUR APPALACHIAN WOOD SPECIES FOR USE IN TIMBER TRANSPORTATION STRUCTURES

This research investigated the treatability of 4 Appalachian hardwoods with waterborne preservatives CCA-C (a chromated copper arsenate) and ACQ-B (an ammoniacal preservative). Heartwood and sapwood of the species were studied, at least initially, for all species. Samples of red maple, yellow-poplar, hickory, and beech were end-sealed and vacuum/pressure treated with a 1% active ingredient solution of ACQ-B or a 2% solution of CCA-C. Pressure durations were varied as well as the temperature of the solution (for ACQ-B). Measurements were taken of minimum and maximum penetration, percentage of cross-sectional area penetrated, and retention of preservative as determined by x-ray fluorescence spectroscopy. The sapwood of yellow-poplar and red maple was found to be 100% treatable. Hickory sapwood was consistent in treatability, although limited, while beech sapwood fell between hickory and the other species. Duration of pressure periods used in this study had no consistent positive effect on treatment. Preservative solution was a significant factor in improved measures of treatability in some instances.

• Availability:
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• Corporate Authors:

  Forest Products Research Society

  2801 Marshall Court
  Madison, WI  United States  53705
• Authors:
  • Slahor, J J
  • Hassler, C C
  • DeGroot, R C
  • Gardner, D J
• Publication Date: 1997-9

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 33-42
• Serial:
  • Forest Products Journal
  • Volume: 47
  • Issue Number: 9
  • Publisher: Forest Products Research Society
  • ISSN: 0015-7473

Subject/Index Terms

• TRT Terms: Hardwoods; Railroad ties; Tests for suitability, service and quality; Tests specific to a material, structure or device; Wood preservatives; Wood ties; X ray fluorescence
• Uncontrolled Terms: Penetration (Materials); Pressure treatment tests; Retention (Materials)
• Subject Areas: Materials; Railroads;

Filing Info

• Accession Number: 00780074
• Record Type: Publication
• Files: TRIS
• Created Date: Dec 17 1999 12:00AM