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http://dx.doi.org/10.5658/WOOD.2017.45.5.544

Evaluation of Preservative Efficiacy for Refractory Wood Species in Field Tests and Its Implication for Korean Wood Preservation Industry  

Ra, Jong Bum (Department of Interior Materials Engineering, Gyeongnam National University of Science and Technology)
Ingram, Janet (FPInnovations)
Wang, Jieying (FPInnovations)
Morris, Paul I. (FPInnovations)
Publication Information
Journal of the Korean Wood Science and Technology / v.45, no.5, 2017 , pp. 544-558 More about this Journal
Abstract
The objective of this research is to investigate preservative efficacy for refractory species in field tests. The field tests were set up to evaluate the preservative performance of western hemlock and white spruce preservative-treated to the residential products group C and D of Canadian standard (CSA O80 Series-08) that have been developed for residential use in above-ground and ground-contact conditions, respectively. They were incised and pressure-treated with alkaline copper quaternary (ACQ) or copper azole (CA). Treated samples for the ground contact stake test and ground proximity test were installed in Jinju, Korea on November 2010 according to AWPA E7-09 and AWPA E18-06, respectively. Each sample has been annually assigned ratings for decay and termite attack, based on AWPA E7 grading system. After six years and five months of exposure, the untreated samples showed decay and particularly severe damage by termite attack but all the preservative-treated samples showed no decay. The results showed that the 5-mm penetration depths may be applicable for the treatment of refractory species. This paper discusses what to consider for the use of refractory species in Korean wood preservation industry from the penetration and retention points of view.
Keywords
alkaline copper quarternary; copper azole; field test; wood decay; termite;
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Times Cited By KSCI : 1  (Citation Analysis)
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