文献类型：期刊文献

英文题名：Deterioration of Microstructures and Properties in Ancient Architectural Wood from Yingxian Wooden Pagoda (1056 AD) during Natural Aging

作者：Long, Keying[1] Chen, Kaiqiang[1] Lin, Lanying[1] Fu, Feng[1] Zhong, Yong[1]

第一作者：Long, Keying

通信作者：Lin, LY[1]

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China

年份：2023

卷号：14

期号：2

外文期刊名：FORESTS

收录：;EI(收录号：20230913656416);Scopus(收录号：2-s2.0-85149033314);WOS:【SCI-EXPANDED(收录号:WOS:000939163300001)】；

基金：This research was funded by the Chinese Academy of Forestry Fundamental Research Fund, grant number CAFYBB2020ZA003.

语种：英文

外文关键词：Yingxian Wooden Pagoda; natural aging; ancient architectural wood; deterioration; wood cell wall

摘要：The Yingxian Wooden Pagoda (1056 AD), located in Shanxi province, China, is a unique architectural pure-wooden artifact standing for a millennium. Despite its longevity, the structures and properties of the ancient architectural woods used in its construction have been significantly degraded due to long-term natural aging, which has profoundly impacted the preservation of this valuable cultural heritage. To better understand this degradation, we studied the deterioration of a baluster (Larix principis-rupprechtii Mayr.) from Yingxian Wooden Pagoda. The study employed various analytical techniques, including optical microscopy, atomic force microscopy, Fourier-transform infrared spectroscopy, solid-state C-13 nuclear magnetic resonance spectroscopy, X-ray diffraction, and nanoindentation technology, to evaluate the microstructures and properties of the ancient architectural woods. Results indicated that the destruction of wood cell walls was primarily transverse transwall destruction and interfacial debonding and that the degradation of chemical components was primarily in the hemicellulose (xylan) and amorphous region of cellulose. The reduced elastic modulus and hardness of tracheid cell walls in the ancient architectural woods were higher than in recent larch woods. This study would help deepen understanding of wood deterioration during long-term natural aging for the subsequent preservation and protection of wooden cultural heritages and longer use of ancient timber constructions.