硅酸盐通报2025，Vol.44Issue(7)：2514-2527,14.DOI:10.16552/j.cnki.issn1001-1625.2024.1557
偏高岭土活性测定方法的比较与优化
Comparison and Optimization of Metakaolin Activity Determination Methods
摘要
Abstract
Activity is a key index to evaluate the performance of metakaolin.The current activity determination methods are diverse,but there are problems such as time-consuming,inaccurate or unstable results.It is urgent to optimize them to achieve efficient and accurate determination method and promote the on-demand utilization of different active metakaolin.In this study,the activity index method,cement supernatant immersion method,pH value reduction rate method of saturated Ca(OH)2 solution,pH value reduction rate method of heated saturated Ca(OH)2 solution and diphenylguanidine adsorption rate method were used to determine the activity of different metakaolin.The methods were compared in terms of time-consuming,difficulty in operation,test repeatability and results accuracy.The results show that the pH value reduction rate method of heated saturated Ca(OH)2 solution has a test repeatability of 0.988 87 and an accuracy of 0.926 26,making it a fast,simple and accurate method for determining activity of metakaolin.关键词
偏高岭土/火山灰活性/活性测定/活性指数法/pH值降低率法Key words
metakaolin/pozzolanic activity/activity determination/activity index method/pH value reduction rate method分类
建筑与水利引用本文复制引用
杨凯璐,杨鼎宜,陆世敏,陈龙祥,毛翔,赵健..偏高岭土活性测定方法的比较与优化[J].硅酸盐通报,2025,44(7):2514-2527,14.基金项目
国家自然科学基金(52478280) （52478280）
江苏省重点研发计划(社会发展)(BE2022776) （社会发展）
