文献类型：会议论文

英文题名：NMR evaluation of a consolidation process by the dispersion of Ca(OH)(2) in porous sandstone

作者：Zhou, Hua[1];Netto, Antonio Marchi[2];Bluemich, Bernhard;Gao, Feng[3];Xiao, Ya[4]

第一作者：周华

通讯作者：Zhou, H[1]

机构：[1]Beijing Union Univ, Coll Appl Arts & Sci, Beijing, Peoples R China;[2]Rhein Westfal TH Aachen, Inst Tech & Makromol Chem, Aachen, Germany;[3]Chinese Acad Cultural Heritage, Beijing, Peoples R China;[4]Inst Archaeol & Cultural Relics Hunan Prov, Changsha, Hunan, Peoples R China

第一机构：北京联合大学应用文理学院

通讯机构：[1]corresponding author), Beijing Union Univ, Coll Appl Arts & Sci, Beijing, Peoples R China.|[114172]北京联合大学应用文理学院;[11417]北京联合大学;

会议论文集：International Symposium on Scientific Problems and Long-Term Preservation of Large-scale Ancient Underground Engineering

会议日期：OCT 23-26, 2015

会议地点：Longyou, PEOPLES R CHINA

语种：英文

外文关键词：Caves - Dispersions - Hydrated lime - Lime - Pore size - Sandstone - Water absorption

摘要：The Yungang Grottoes are located in Datong of China, dating from the 4th century. They represent the early cave art and world famous cultural heritage artifact. In 2003, they were listed as one of the UNESCO World Heritage Sites. After more than one thousand years of exposure to natural weathering and anthropogenic influence factors, the sandstone suffered severe degradation and destruction. In order to better understand the degradation and to protect the Yungang Grottoes from further damage, the consolidation of sandstone is being studied. A successful procedure is the consolidation by the dispersion of nano-calcium hydroxide diluted in different alcohols. In this work, a newly developed consolidation process was analyzed with NMR-MOUSE in order to select the best consolidation condition, by measuring the pore-size distribution and water absorption of sandstone samples before and after consolidation. The optimum consolidation procedure employed used pure isopropanol as the solvent.