Preparation and characterization of calcium aluminate by chemical synthesis

作     者：Feng Chen Yanruo Hong Jialin Sun Jinglong Bu 

作者机构：Materials Science and Engineering School University of Science and Technology Beijing Beijing 100083 China Hebei Physical and Engineering Institute Tangshan 063009 China 

出 版 物：《Journal of University of Science and Technology Beijing》 (北京科技大学学报（英文版）)

年 卷 期：2006年第13卷第1期

页      面：82-86页

核心收录：

学科分类：081704[工学-应用化学] 07[理学] 08[工学] 070301[理学-无机化学] 0806[工学-冶金工程] 0817[工学-化学工程与技术] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0802[工学-机械工程] 0813[工学-建筑学] 0814[工学-土木工程] 0702[理学-物理学] 0801[工学-力学（可授工学、理学学位）] 

基　　金：financially supported by the National Natural Science Foundation of China Key Program (No. 50332010) the National Natural Science Foundation of China (No. 50172007) 

主　　题：calcium aluminate preparation characterization chemical synthesis 

摘      要：Saturated Ca（OH）2 and AlCl3 solutions were used to synthesize calcium aluminate hydrate precipitates at room temperature; high purity calcium aluminate powders with stable phases were made by calcination of the precursors at a temperature as low as 1100℃. PSD and BET analysis revealed the particles with sizes ranging from submicrometer to several micrometers and with a specific area of 13 m^2/g. The measurement of hydraulic exotherm revealed that the exothennal rate is in peak for about 2 h. The exothermal quantities are 449.24 J/g at 12 h and 488.38 J/g at 24 h. Its strength development is quick and the 1 day curing strength is almost equal to 100% of the 3 days curing strength in the mortar test.