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Multiple-Phase Pressure (MPP) Process: One-stage CCA treatment and accelerated fixation process. 3. Effect of process variables on sapwood treatment and CCA fixation.
1998 - IRG/WP 98-40114
The Multiple-Phase Pressure (MPP) Process achieves treatment and fixation as combined process using hot CCA, within a 2-3 hour time-frame. Timber is treated to saturation with hot CCA using an empty cell process. During the pneumatic pressure phase, hot solution is held in the wood in an otherwise liquid-free treatment vessel until fixation is >95% complete.
This report details a factorial des...
H Pearson, K Nasheri, J A Drysdale, G Durbin, M E Hedley
A Method for Studying Boron Redistribution and Leaching in Timber Framing
2011 - IRG/WP 11-20476
In typical New Zealand timber framed house construction, the timber framing has a vapour permeable building wrap applied to the exterior and a cladding applied over 20 mm battens. An interior lining usually of gypsum plasterboard is then fixed once the timber framing has a moisture content of < 20%. Timber framing within the building envelope is not expected to be wet in-service or exposed to a le...
J A Drysdale, N Marston, M E Hedley