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]; Blümich, Bernhard[2]; Gao, Feng[3]; Xiao, Ya[4]

第一作者：周华

机构：[1] College of Applied Arts and Science, Beijing Union University, Beijing, China; [2] Institut für Technische und Makromolekulate Chemie, RWTH Aachen University, Germany; [3] Chinese Academy of Cultural Heritage, Beijing, China; [4] Institute of Archaeology and Cultural Relics of Hunan Province, Changsha,Hunan Province, China

第一机构：北京联合大学应用文理学院

会议论文集：Ancient Underground Opening and Preservation - Proceedings of the International Symposium on Scientific Problems and Long-Term Preservation of Large-Scale Ancient Underground Engineering, 2015

会议日期：October 23, 2015 - October 26, 2015

会议地点：Longyou, Zhejiang, China

语种：英文

外文关键词：Lime - Weathering - Dispersions - Hydrated lime - Water absorption - Pore size - Mortar

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. ? 2016 Taylor & Francis Group, London.