Abstract
This experiment was accomplished to study the effect affecting to the absorption of creosote solutions by treating temperatures 20, 50 and $80^{\circ}C$ when the small test pieces were treated as short timed immersion process. The test speciemens used in this experiment were cut into 180 pieces of $2.5{\times}2.5{\times}5cm$ size from the air dried sapwood of Righda Pine (Pinus rigida M.). They were controlled to about 8 to 9% moisture contents and measured specific gravities. Four creosote solutions of $S_1$(straight creosote), $S_2$(creosote 70% : heavy oil 30%), $S_3$(creosote 50% : heavy oil 50%) and $S_4$(creosote 30% : heavy oil 70%), and three treating temperatures of $T_1$($20^{\circ}C$), $T_2$($50^{\circ}C$) and $T_3$($80^{\circ}C$) were applied by factorial split plot design in the each treatment of 3, 7, 15, 30 and 60 minutes immersion. According to the results this study may be concluded briefly as follows : 1. In this immersion process the absorption effects of creosote mixtures by the increase of temperatures are recognized considerably in the each treating times. However in the straight creosote of treated solutions the effective differences were not shown but most effective differences were shown in the $S_2$ solution. 2. Although the solutional absorptions were raised considerably by temperature increase in every treating times the absorption effects of creosote mixtures were not reached to that of straight creosote because the effects are considerably lowered if the treating solutions were mixed with heavy oil even a small quantities. 3. The relations between the creosote contents of treating solutions and the absorptions in wood are shown as Fig. 1, 2, 3, 4 and 5. In these figures the absorption curves made by higher temperature treatment $T_3$ are on the lower treatments $T_1$ and $T_2$ if the solutions were mixed with heavy oil. 4. This report is a part of the consolidated results announced at the annual meetings of Korean Forestry Association in 1964 and 1965.