Treatment of Softwoods with CCA at High Moisture Levels |
| |
| Authors: | P F Coetzee A van Laar |
| |
| Institution: | 1. S.A. Forest Research Institute , Pretoria;2. Faculty of Forestry , University of Stellenbosch |
| |
| Abstract: | A literature study on the feasibility of treating wood with aqueous solutions at high moisture levels revealed a positive indication. The objective of the present study was to determine treatability of Pinus radiata and P. pinaster lumber at high moisture levels with commercial CCA in controlled experiments. The wood samples were treated at levels of moisture content ranging from 20 to 100%. A statistical analysis of the data showed that specific gravity and moisture content influence solution-absorption, the effect being different for different species. Chemical analyses showed a screening out of copper- and arsenic compounds. The effect of higher moisture contents on screening out was negligible. The results indicated that certain wood species can be treated satisfactorily with CCA at moisture levels higher than 25%. |
| |
| Keywords: | land reform rural development commercial woodlots |
|
|
