The Analysis of Traditional Lime Mortars from Zhejiang Province, China
LIU Xiao-bin1, CUI Biao2, ZHANG Bing-jian1, 3*
1. School of Cultural Heritage and Museology, Zhejiang University, Hangzhou 310028, China 2. Zhejiang Provincial Research Institute of Cultural Relics and Archaeology, Hangzhou 310014, China 3. Faculty of Chemistry, Zhejiang University, Hangzhou 310027, China
Abstract：The components of ancient mortars have always been an important research field in historic building conservation. It has been well known that using traditional mortars in conservation projects have many advantages, such as compatibility and stability. So, developing new binding materials based on traditional mortar has become an international study hotspot. With China’s economic development, the protection of ancient buildings also began to put on the agenda, but the understanding on Chinese traditional mortar is limited, and rare literatures are reported. In the present work, the authors investigate seven ancient city wall sites in Zhejiang Province in situ, and subsequently laboratory analysis were carried out on collected mortar samples. The characterizations of mortar samples were made by multi-density gauge, XRD, FTIR, TG-DSC and wet chemical analysis. The experimental results showed that: the main component of masonry mortars is calcium carbonate, the content between 75%～90%, and they should be made from relatively pure lime mortar. The raw materials of mortar samples were mainly calcareous quick lime, and sample from Taizhou city also contained magnesium quick lime. There are four city walls were built by sticky-rice mortars. It suggests that the technology of adding the sticky rice soup into mortar was universal in the Ming Dynasties. These mortars have lower density between 1.2 and 1.9 g·cm-3; this outcome should be the result of long-term natural erosion. We have also analyzed other chemical and physical characteristics of these masonry mortars. The results can afford the basic data for the future repairmen programs, development of new protective materials, and comparative study of mortars.
刘效彬1，崔 彪2，张秉坚1，3*. 浙江古城墙传统灰浆材料的分析研究[J]. 光谱学与光谱分析, 2016, 36(01): 237-242.
LIU Xiao-bin1, CUI Biao2, ZHANG Bing-jian1, 3* . The Analysis of Traditional Lime Mortars from Zhejiang Province, China. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2016, 36(01): 237-242.
