煅烧红土替代红土制备红灰的可行性研究_陈寅炜 : . 建筑材料学报灰反应，且添加了煅烧红土的试样中骨料与基体结合更为紧密，这是其 性能提升的重要原因. 关键词：古建筑；红灰；煅烧红土；火山灰反应 中图分类号：TU526 文献标识码：A Feasibility Study on Preparation of Red Lime Using Calcined Red Clay Instead of Red Clay CHEN Yinwei1,2,3，WANG Julin1,2,3* (1. School of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China; 2. Beijing Key Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China; 3. Key Research Base of State Administration of Cultural Heritage for Evaluation of Science and Technology Research in Cultural Relics Protection Field, Beijing 100029, China) Abstract: At present, the red lime using in ancient buildings has low strength and poor freeze-thaw resistance. In order to improve the performance of red lime, red clay was calcined at 600℃ and 800℃, respectively. The calcined red clay instead of red clay was mixed with lime to produce red lime. The physical and mechanical properties and freeze-thaw resistance of red lime samples were studied. The results show that the properties of samples using calcined red clay as raw material are better than those using red clay as raw material, and the freeze-thaw resistance is significantly improved. The phase composition and microstructure of each sample was analyzed and it can be seen that pozzolanic reaction occurs between calcined red clay and calcium hydroxide, and the aggregates in the samples with calcined red
