文献类型：期刊文献

英文题名：Effect of kerf location on drying quality of larch logs

作者：Wang, Sidong[1] Zhang, Fenghao[1] Wang, Qianqing[1] Jiang, Jinghui[1]

第一作者：Wang, Sidong

通信作者：Jiang, JH[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing, Peoples R China

年份：2024

卷号：42

期号：12

起止页码：1866-1874

外文期刊名：DRYING TECHNOLOGY

收录：;EI(收录号：20243617006472);Scopus(收录号：2-s2.0-85203074446);WOS:【SCI-EXPANDED(收录号:WOS:001304879700001)】；

基金：This work was supported by : Chinese Academy of Cultural Heritage Open project "Key Technologies for Restoration and Reinforcement of Damaged Wooden Towers in Yingxian County" (Project No. 2022002) Program.

语种：英文

外文关键词：Log; drying; eccentric; kerf treatment

摘要：The demand for structural logs in wooden construction is substantial. However, logs, due to their inherent structural characteristics, are prone to developing checks during drying process. Kerf treatment is a practical and effective pretreatment technology for drying that can significantly reduce checking. Nonetheless, the optimal location for the kerf treatment remains unexplored. This study was designed to position the kerf based on the location of the pith and assessed the effects of single kerf, double kerf, and kerf-center boring treatments on log drying quality. The check ratio of kerf logs decreased significantly (p < 0.05). As kerf depth increased, the check ratio slightly decreased, while the moisture content (MC) difference between the core layer and surface layer increased. Additionally, the inclusion of kerfs in counterpoint positions exhibited a profound effect on reducing the check ratio. Eccentricity influenced the later drying stages of the logs. The check ratio of non-eccentricity logs tended to stabilize during the later drying period, while that of eccentric logs continued to increase. For eccentric logs, this study employed the counterpoint double-kerf process, resulting in a surface check ratio of 0.42%. For non-eccentric logs, utilizing a single shallow kerf significantly improved the surface drying quality, with a surface check ratio of 1.00%.