摘要
通过在水泥基材料中加入矿物掺合料粉煤灰,利用差示热膨胀测试方法对其热膨胀率进行了研究,结果表明:掺入粉煤灰的水泥石热膨胀率变化规律与纯水泥石者相似,均表现为随着温度的升高先增加后显著降低的趋势,而粉煤灰的加入使水泥石在高温时产生比纯水泥石更大的收缩。借助于TG-DTA和XRD测试手段,对掺加粉煤灰后水泥石的热膨胀性能变化规律进行了机理分析。
The influence of fly ash on the thermal expansions was first researched by adding fly ash through equipments NETZSCH D/ L 402EP. The result shows that thermal expansion curve increases at first, then decreases as temperature continued to rise, and at high temperature range the shrinkage rate of cement-based material amended by fly ash is greater than that of the reference cement. The mechanism has been researched through TG-DTA,XRD.
出处
《武汉理工大学学报》
CAS
CSCD
北大核心
2009年第8期17-20,共4页
Journal of Wuhan University of Technology
基金
国家自然科学基金重点项目(50438010)
关键词
水泥基材料
粉煤灰
热膨胀率
cement-based materials
fly ash
thermal expansion
