The effect of aqueous leaching on moisture uptake by CCA-treated blocks during soil burial
C A Green, G M Smith, B King
Mass loss, moisture content and nitrogen data from two soil burial experiments with untreated and CCA-treated Scots pine (Pinus sylvestris L.), Sitka spruce (Picea sitchensis Carr) and lime (Tilia vulgaris Hayne) are presented. These show that aqueous leaching of CCA-treated wood prior to burial significantly reduces its subsequent moisture uptake from soil. In the case of lime, a reduction in the rate of microbial invasion and decay of leached, treated blocks, when compared with their unleached counterparts, was demonstrated. The implications of these observations with regard to accelerated testing methods are discussed.