This study investigated the leaching of copper azole (CA-B) preservative, according to JIS K 1571 standard, from sundri (Heritiera fomes Buch.-Ham.) lumber treated by full-cell and passive-impregnation methods. Although the preservative retention was similar for both methods, penetration was higher with the passive-impregnation method (66%) than with the full-cell method (43%). Further, it was found that the leaching of preservative was significantly higher in wood treated by the full-cell method (1.18%) than by the passive-impregnation method (0.92%).
Contributor Notes
The authors are, respectively, Assistant Professor and JSPS Postdoctoral Fellow, Tokyo Univ. of Agric. and Technol., Fuchu-shi, Tokyo, Japan (andok@cc.tuat.ac.jp, nazrul@cc.tuat.ac.jp); Associate Professor, Inst. of Wood Technol., Akita Prefectural Univ., Noshiro, Akita, Japan (hide@iwt.akita-pu.ac.jp); and Professor, Tokyo Univ. of Agric. and Technol., Fuchu-shi, Tokyo, Japan (hattori@cc.tuat.ac.jp). This paper was received for publication in January 2011. Article no. 11-00013.