摘要
含水率是评估饱水木质文物糟朽程度最常用的物理参数之一。目前含水率检测常用方法有烘干法、电阻法、近红外光谱法等,但这些方法或属于破坏性分析,或检测范围不适用。为寻找一种适用于饱水木质文物含水率的无损检测方法,基于饱水木材组成理论模型,建立了含水率与湿态密度、灰分含量三者之间关系,进而提出一种检测含水率的便捷方法——溶液密度法。采用上述方法对天长、淮北等地出土饱水木质样品含水率进行测试,并与烘干法测得标准值进行验证。结果发现两者数据较为接近,相对误差在10%以内,证明了该方法的可靠性。进一步研究发现,样品越糟朽,使用该方法获取的数据与标准值之间相对误差越小。说明该方法更适用于糟朽饱水木材含水率的检测。
Water content is one of the most commonly-used physical parameters to assess the deterioration of waterlogged archaeological wood.Currently,popular methods for the determination of water content include the drying method,the resistance method,near-infrared spectrometry,etc.However,these methods are either destructive or not applicable due to determination ranges.In order to find a non-destructive method suitable for the determination of water content of waterlogged archeological wood,relationships among water content,wet density and ash content of waterlogged wood were established in our study.Accordingly,we put forward a convenient method,called the“solution density method”to determine water content.Samples unearthed in Tianchang,Huaibei and other places were tested using this method.It was found that the data from this method,compared with standard values(obtained using dry method)were quite close(relative error within 10%),which demonstrates its reliability.A further study showed that the more the wood had deteriorated,the smaller the relative error was,indicating that this non-destructive method is more suitable for waterlogged wood with serious degradation.
作者
陈华锋
陶静姝
CHEN Huafeng;TAO Jingshu(Anhui Museum, Hefei 230061, China)
出处
《文物保护与考古科学》
北大核心
2020年第3期58-64,共7页
Sciences of Conservation and Archaeology
基金
安徽博物院院级课题资助(AB2018005)。
关键词
饱水古木
含水率
无损检测
溶液密度法
Waterlogged wood
Water content
Non-destructive test
Solution density method
