Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Nadir Ayrilmis; S Nami Kartal; Theodore L. LaufenbergJerrold E. WinandyRobert H. White
    Date: 2005
    Source: Forest products journal. Vol. 55, no. 5 (May 2005): Pages 74-81.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (716 KB)

    Description

    This study evaluated the effects of a number of chemicals on the physical and mechanical properties and fire, decay, and termite resistance of oriented strandboard (OSB) panels. Disodium octaborate tetrahydrate (DOT), boric acid (BA), melamine phosphate (MP), and a BA/DOT mixture were sprayed onto the furnish at varying concentrations. The panels were tested for thickness swell, water absorption, modulus of rupture, modulus of elasticity, and internal bond strength according to the procedures defined by ASTMD 1037. All treated panels, except those treated with BA/DOT, were found to comply with CSA 0437 requirements for mechanical properties at a 2 percent concentration level. However, thickness swell and water absorption values were higher compared to CSA 0437 standard values. Laboratory decay tests showed that treated OSB specimens were well protected from both a brown-rot fungus (Fomitopsis palustris) and a white- rot fungus (Trametes versicolor). Weight losses in MP-treated OSB specimens were higher than those in boron-treated specimens. However, increased MP content caused a decrease in weight loss. In termite tests, BA and DOT were more effective than MP against Coptotermes formosanus. Contrary to decay test results, OSB specimens containing higher MP concentrations showed lower resistance against termite attack. In a limited series of cone calorimeter tests, treatments did not substantially improve the fire performance of OSB. Of the treatments studied, the highest retentions of BA and BA/DOT provided some improvement in fire performance. DOT also provided some improvement but it was not commensurate with the amount of chemical added.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Ayrilmis, Nadir; Kartal, S Nami; Laufenberg, Theodore L.; Winandy, Jerrold E.; White, Robert H. 2005. Physical and mechanical properties and fire, decay, and termite resistance of treated oriented strandboard. Forest products journal. Vol. 55, no. 5 (May 2005): Pages 74-81.

    Keywords

    OSB, oriented strandboard, physical properties, mechanical properties, fire resistance, decay resistance, termite resistance

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page