碱激发剂对粉煤灰加气混凝土性能的影响.pdf
文档页数：3文档大小：1.47MB文档格式：pdf粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION2014o.1 专题研究 碱激发剂对粉煤灰加气混凝土性能的影响 Effect of Alkali-activator on Performance of Fly Ash Aerated Concrete周卫兵,孙正,朱教群,朱惠英2 (1.武汉理工大学材料科学与工程学院,湖北武汉430070;2.广西建筑科学研究设计院,广西南宁530011) 商要:采用Na2SiO3作碱激发剂提高加气混凝土中粉煤灰的活性,比较激发前后加气混凝土物理性能的变化。通 过XRD和SEM方法研究水化产物的物相组成和显微形貌。结果表明:Na2SiO3能够显著提高加气混凝土的抗压强度;激 发后,粉煤灰加气混凝土物相中可见较多托贝莫来石,水化产物均匀分布相互胶结,形成更为致密结构。 关键词:na2SiO粉煤灰加气混凝土 中图分类号:TU528.2 文献标识码:A 文章编号:1005-8249(2014)01-0003-03 Zhou Weibing ,Sun Zheng ,Zhu Jiaoqun' ,Zhu Huiying( 1.School of Materials Science and Engineering ,Wuhan University of Technology ,Wuhan 430070 ,China ; 2 .Guangxi Institute of Building Research Design .Nanning 530011 ,China ) Abstract :The SiO ;as alkali-activator was added to improve the activity fly ash in aerated concrete paste ,and to with thephysical property change of aerated concrete before and after activation .Phase position and microstructure morphology of hydration products werealso studied by XRD and SEM methods .The results show that the ,can significantly improve the pressive strength of aerated conerete . After alkali activated effect ,more tobermorite can be observed in fly ash aerated concrete hydration products ...
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