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Filtering by: Advisor Morrell, Jeffery J. Remove constraint Advisor: Morrell, Jeffery J. Decade 2010-2019 Remove constraint Decade: 2010-2019

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  • Evaluation of various chemical treatments to prevent the abiotic deterioration of southern pine surfaces through outdoor screening trials

    Creator:
    Schauwecker, Christoph F.
    Abstract:
    Rapid discoloration and checking of wooden surfaces when exposed outdoors has caused wood to fall out of favor as an outdoor building material, especially in applications where appearance is important. The surface appearance of wood products exposed outdoors can be improved through the application of film forming coatings or by...
    Resource Type:
    Dissertation
    Full Text:
    through Outdoor Screening Trials Abstract approved: Jeffery J. Morrell Rapid

  • Moisture effects on properties of wood-composite assemblies

    Creator:
    King, David
    Abstract:
    Engineered wood composites are used in many structural applications and are intended for dry use. However, these materials may encounter significant amounts of wetting while in service, which can lead to structural failures. This study combined aspects of wood science, mechanics, structural engineering, and mycology to assess changes in material...
    Resource Type:
    Masters Thesis
    Full Text:
    .  Dr. Jeffery J. Morrell – Distinguished Professor, Oregon State University  Dr. Arijit Sinha

  • Essential oil treatment of VTC wood

    Creator:
    Scouse, Adam A.
    Abstract:
    Western juniper and cinnamon essential oils were combined with ethanol at 2.5, 5, and 10% concentrations by weight and applied to hybrid poplar (Populus trichocarpa x P. deltoids) veneers by vacuum soaking to produce a naturally durable wood veneer with increased mechanical properties for use in structural composites. Half of...
    Resource Type:
    Masters Thesis
    Full Text:
    : _____________________________________________________________________ Fred Kamke Jeffery J. Morrell Western juniper and cinnamon essential oils were

  • Utilization of ground peanut husk as an alternative fiber material for particleboard

    Creator:
    Newton, Jacob A.
    Abstract:
    This research examined the potential for using peanut husk as a fiber alternative to wood in the production of melamine-formaldehyde (MF) particleboard. MF resin was used to produce panels with one, three, six, nine or 12 percent resin contents. Modulus of Rupture (MOR), Modulus of Elasticity (MOE), Internal Bond (IB)...
    Resource Type:
    Honors College Thesis
    Full Text:
    :_____________________________________________________ Jeffrey J. Morrell This research examined the potential for using peanut husk as a fiber

  • The Effect of Sill Height on Decay in Air-Seasoning Crossties

    Creator:
    Rogers, Leon R.
    Abstract:
    The sustainable use of wood for rail ties requires chemical treatment to increase service life and maintain structural integrity. Treatment can only be applied after lengthy air-seasoning to reduce moisture content in wood, but seasoning leaves ties exposed to attack by decay fungi for up to a year. One factor...
    Resource Type:
    Masters Thesis
    Full Text:
    : ___________________________________ Jeffrey J. Morrell The sustainable use of wood for rail ties requires chemical

  • Potential for Using Boron Compounds with Differing Water Solubilities in Pastes for Remedial Treatment of Utility Poles

    Creator:
    Uysal, Selim
    Abstract:
    Boron and boron compounds have been long used for pressure treatment, dip-diffusion, and remedial treatments of wood because of their proven efficacy against fungi and insects. These materials are especially attractive because their high water solubility promotes deeper penetration into wood. Other useful properties of boron include its neutral pH,...
    Resource Type:
    Masters Thesis
    Full Text:
    . Abstract approved: ______________________________________________________ Jeffrey J. Morrell

  • Development of a test method for assessing water repellency and derived physical stability of preservative systems for railroad ties

    Creator:
    Beck, H. Greeley
    Abstract:
    Resistance to moisture uptake is an important attribute of some wood preservatives and can help reduce moisture cycling that leads to the development of deep checks. While the potential for preservative treatments to help improve wood/moisture interactions is acknowledged, there are no tests that specifically evaluate this performance parameter. Checking...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________________________ Jeffrey J. Morrell Resistance to moisture uptake is an important attribute of some wood

  • Effects of best management practices on copper migration from Douglas-fir lumber treated with ACZA, CA or ACQ

    Creator:
    Ye, Min
    Abstract:
    Copper is the most common ingredient in waterborne preservatives and provides excellent activity against most fungi and insects. However, issues associated with copper migration from treated wood have created increasing concerns about potential risks to non-target organisms in surrounding environments, especially those in sensitive aquatic environments. Various Best Management Practices...
    Resource Type:
    Masters Thesis
    Full Text:
    : ______________________________________________________ Jeffrey J. Morrell Copper is the most common ingredient in waterborne preservatives and

  • Modeling changes in flexural properties of softwood beams during fungal decomposition

    Creator:
    Mitsuhashi Gonzalez, June M.
    Abstract:
    Moisture intrusion in residential structures can lead to substantial fungal decay and this damage costs billions in repair/replacement costs. The extent of damage and the rate at which it occurs are primarily dependent on the wood moisture content and temperature in the structure. Determining the risk of decay for various...
    Resource Type:
    Dissertation
    Full Text:
    Jeffrey J. Morrell Moisture intrusion in residential structures can lead to substantial fungal

  • Characterization of Fungal Communities in Selected Wood Species by Field Exposure Tests

    Creator:
    Torres-Andrade, Paola A.
    Abstract:
    Fungi are the primary biological agents of wood deterioration and cause major economic losses of wood products globally. Wood in outdoor applications tends to remain wet for extended time periods, making it susceptible to fungal attack. Understanding the factors involved in fungal colonization of wood is important for developing improved...
    Resource Type:
    Dissertation
    Full Text:
    Abstract approved: ______________________________________________________ Jeffrey J. Morrell