Decay of Thermally Modified Engineered Wood Products

From the paper

Abstract

In this study, rated plywood, oriented strand board, laminated strand lumber, and laminated veneer lumber were thermally modified as a posttreatment at 140°C, 150°C, 160°C, 170°C, and 180°C using a closed, pressurized treatment method. Eastern larch oriented strand board manufactured from heartwood and sapwood was also thermally modified as a posttreatment at 160°C and 180°C. All specimens were subjected to laboratory soil block durability tests according to American Wood Protection Association E10‐12 utilizing Gloeophyllum trabeum (brown rot) and Trametes versicolor (white rot) fungi. Heat treatment caused a reduction in weight loss for most substrate and fungi combinations.