The influence of cement and calcium compounds on the performance of CCA preservatives

IRG/WP 3221

R J Murphy

The influence of cement and calcium compounds on the durability of untreated and CCA treated wood is considered. Calcium compounds were found to reduce the toxicity of a CCA preservative to a soft rot fungus at copper to calcium ratios of 1:1 and 1:10 using a cellulose filter paper technique. Further studies are outlined and some possible mechanisms by which cement and calcium compounds may affect the performance of CCA preservatives are discussed.


Keywords: CCA; CEMENT; CALCIUM CARBONATE; DECAY; HUMICOLA; pH; SOFT ROT; TOXICITY REDUCTION; CALCIUM HYDROXIDE; CALCIUM CHLORIDE; COPPER

Conference: 83-05-09/13 Surfers Paradise, Queensland, Australia


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