Internal Pressure Measurement Techniques and Pressure Response in Wood During Treating Processes
Keywords:Douglas-fir, ponderosa pine, permeability, pressure treatment, pressure development
AbstractThe development of pressure inside wood during preservative impregnation was studied using Douglas-fir heartwood and ponderosa pine sapwood. Pressure sensors mounted on sample holders provided the most reliable measurements. As expected, pressure equilibrated most rapidly with air as the treatment medium and ponderosa pine as the test species. Pressure changes were relatively slow in Douglas-fir heartwood, suggesting that process conditions involving relatively rapid changes in pressure conditions will have little effect on fluid penetration away from the wood surface.
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