This report provides the methods and summarizes the results of Forintek research to characterize the properties of British Columbia lumber containing beetle-transmitted bluestain.
In 2003 Forintek Canada Corp. collected approximately 30 pieces of bluestained lodgepole pine lumber cut from beetle-attacked trees, and an equivalent amount of non-bluestained lumber from each of 14 different sawmills in the B.C. Interior. The geographic range of beetle attack was represented in the sampling plan. The wood was delivered to the Forintek Vancouver laboratory for conditioning and processing into test specimens. The specimens were allocated, in equal proportion from each mill, between tests of mechanical, dimensional stability/permeability, gluing, and finishing properties.
This research represents the first comprehensive study and compilation of the properties of beetle-transmitted bluestained wood. Overall, the research indicates that this wood can be used, without compromising performance, for structural, furniture, and preservative-treated end uses.
A factsheet summarizing the findings produced for customers of bluestained wood is included in the appendix to this report.
Fibre-reinforced wood systems are light, strong, stiff composites that can efficiently replace larger wood members and can be relied on to provide consistent mechanical properties.
This report is an introduction to fibre-reinforced wood systems for members of the Canadian wood products industry. It provides the motivation for reinforcing wood with synthetic fibres, and surveys the choice of materials and their uses. Numerous examples of current applications are discussed to demonstrate the strong and weak points of various approaches and examine the durability and management of fibre-reinforced wood products, as well as to indicate opportunities that exist for the Canadian wood products industry.
This report is intended to be a useful reference for the Canadian wood products industry, and assist future developments in structural and non-structural applications of fibre-reinforced wood products.