含水率对固态激发剂制备地质聚合物显微结构与性能的影响Effect of Water Ratio on the Microstructure and Properties of Geopolymer Prepared by Solid State Activator
丁二宝;胡海泉;曹春娥;陈云霞;徐炎;
摘要(Abstract)：
主要研究了固态激发剂制备地质聚合物样品中含水率对显微结构与抗折强度的影响，并对样品进行了XRD、SEM及EDS表征。结果表明：含水率为11%，混合料静置12 h时，抗折强度最大值为31.62 MPa。继续延长静置时间，样品抗折强度基本无变化；含水率过少或过多，均会引起样品结构中微裂纹的产生，使样品抗折强度下降。随静置时间的延长，养护后Na型针沸石相的特征衍射峰逐渐增强，形成一种硅铝摩尔比为1.13的单硅铝链状结构，其通过聚合生长方式朝不同方位穿插生长，最终形成针状聚集体形貌的沸石晶体，增大样品的抗折强度。
关键词(KeyWords)： 含水率;抗折强度;缩聚反应;显微结构;固态激发剂
基金项目(Foundation): 国家自然科学基金(51162016);; 江西省科技支撑计划项目(20133BBE50004);; 景德镇市科技计划项目(2017GYZD016-03);; 平顶山学院高层次人才启动基金(PXY-BSQD-202111)
作者(Authors): 丁二宝;胡海泉;曹春娥;陈云霞;徐炎;
DOI: 10.13958/j.cnki.ztcg.2022.02.006
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