摘要
对西安明城墙实地风化现状进行考察,发现城墙表面存在大面积白色盐析现象,这不仅影响城墙整体美感,更会造成古砖表面风化。通过对墙体表面析出盐分进行X射线衍射(XRD)、扫描电镜(SEM)及离子色谱分析(IC),研究了其风化产生的原因。结果表明,其墙体表面析出盐的主要成分为硫酸钠,硫酸钠对于砖质文物具有严重的侵蚀作用。在实验室进行模拟实验基础上,结合硫酸钠对砖体的侵蚀机理,对造成的风化现象进行了分析。
In surveying the weathered surface appearance on Xilan Ming Dynasty City Wail, the white salt powders were largely found on the surface of the bricks, which greatly affect overall appearance and cause bricks into pulverization. To reveal the reasons, we analyzed the soluble salts from the surface of bricks by using X-ray diffraction（XRD）, scanning electron microscopy （SEM） and ion chromatography（IC）. The results showed that the main component of the soluble salt is sodium sulfate. According to the corrosion mechanism related to sodium sulfate, some sim- ulated experiments were carried out in the laboratory, and the weathering phenomenon caused by soluble salt was investigated.
出处
《陕西师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2015年第4期54-58,共5页
Journal of Shaanxi Normal University：Natural Science Edition
基金
国家社会科学基金(10XZS013)
关键词
明城墙
风化
可溶盐
文化遗产保护
The Ming Dynasty City Wail
the weathering
soluble salt
cultural heritage conservation
