两种不同环境控制下砂岩类文物岩石材料剥落特征及形成机制差异性的研究

为了研究不同环境对砂岩类文物岩石材料劣化的影响和控制,本工作以北京西黄寺和柬埔寨吴哥遗址周萨神庙两种砂岩类文物岩石材料为研究对象,从砂岩表层剥落形态、物理性质、化学矿物成分及微观结构变异四个方面对剥落特征进行了系统论述,并从岩石特性和环境因素两方面对剥落形成机制进行了分析.研究结论认为周萨神庙砂岩表层剥落比西黄寺砂岩更严重,这是由于其材料本身特性略差、大气降雨作用和生物活动更频繁造成的.本工作的测试方法及剥落形成的机制可为类似研究提供参考.

Study of the characteristics and mechanism of exfoliation of historical sandstone in two different environments

In order to study the influence of environment on the deterioration of historical sandstone, the sandstone of Xi Huang Temple in Beijing, China, and of Chau Say Tevoda in AnKorin, Cambodia, were selected as research subjects. This research focused on four sandstone exfoliation characteristics: shape, physical properties, chemical components, and microstructure change. The research also analyzed the exfoliation mechanism based on stone characteristics and its environment. It is concluded that exfoliation of the sandstone of Chau Say Tevoda is more serious than that of XiHuang Temple for three reasons: the first is that the sandstone of Chau Say Tevoda is of a type that deteriorates more easily than the sandstone of Xi Huang Temple; the second is that the annual average precipitation of Siem Reap is much higher than that of Beijing; the third is that the biological activity at Siem Reap is more active than that at Beijing. The testing methods used here and sandstone exfoliation mechanism described will serve as a reference for similar studies.