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New approaches to practical evaluation method of bio-degradation of wooden construction - Non-destructive detection of defects using radar technique
2000 - IRG/WP 00-20214
There have been a number of researches and developments on the techniques and apparatus for the nondestructive evaluation of the biological deterioration in wood and wooden constructions, such as decay or insect attack in house, public buildings or in historically important architectures. As for the detection of the decay in wood, techniques using sound in audible or in ultrasonic frequency ranges...
Y Fujii, Y Komatsu, Y Yanase, S Okumura, Y Imamura, M Tarumi, H Takiuchi, A Inai


Leaching amount of wood preservatives from treated wood in different size during outdoor exposure for 6 months
2000 - IRG/WP 00-50160
Eighteen impregnated specimens with CCA, ACQ, and BAAC preservatives were subjected to a outdoor leaching test. Test specimens, 10 x 10 x 25 cm3, 5 x 10 x 25 cm3, 2 x 10 x 25 cm3 in size, were cut from Japanese cedar (Cryptomeria japonica). Both of end surfaces were sealed with a silicone sealer in the half number of specimens. Total leaching amounts of copper from the open-end ACQ specimens of 10...
K Yamamoto, S Motegi, A Inai


Comparative study on the leaching of wood preservatives between natural exposure and accelerating laboratory conditions
1999 - IRG/WP 99-50134
Impregnated specimens with CCA, ACQ, and BAAC were subjected to leaching tests. Specimens of 2x2x1 cm3 in size were used for the laboratory leaching test for 10 days according to JIS K 1571. Specimens of 25x1 x1 cm3 were used for outdoor leaching test for 6 months. Total leaching amounts of boron per cm3 of specimens treated with BAAC were 325 µg in the laboratory test and 206 µg in the outdoor ...
K Yamamoto, S Motegi, A Inai