非晶态生成物含量对粉煤灰基地质聚合物强度的影响  

INFLUENCE OF CONTENTS OF PRODUCTED AMORPHOUS SUBSTRACTS ON STRENGTH OF FLYASH GEOPOLYMER

作　　者：杨昆 杜守继[1,2] 韩宇栋 侯东伟[1,2] YANG Kun;DU Shouji;HAN Yudong;HOU Dongwei(Department of Civil Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Shanghai Key Laboratory for Digital Maintenance of Buildings and Infrastructure,Shanghai 200240,China;Central Research Institute of Building and Construction Co.,Ltd.,MCC Group,Beijing 100088,China)

机构地区：[1]上海交通大学土木工程系,上海200240 [2]上海市公共建筑和基础设施数字化运维重点实验室,上海200240 [3]中冶建筑研究总院有限公司,北京100088

出　　处：《工业建筑》2021年第3期165-169,179,共6页Industrial Construction

基　　金：国家重点研究发展计划(2016YFC0701003);国家自然科学基金项目(51479113);国防科技创新特区“珊瑚骨料混凝土”项目。

摘　　要：从生成物晶态或非晶态含量的角度出发,讨论粉煤灰基地质聚合物强度的影响因素。首先通过对碱性激发剂配比优化制备出高强粉煤灰基地质聚物,并在不同养护温度和养护龄期下获得不同的强度水平;然后利用扫描电子显微镜对地质聚合物的微观形貌进行分析,基于X射线衍射全谱拟合法对地质聚合物的矿相成分做定量分析,确定晶态或无定型态成分含量;最后分析地质聚合物无定型态成分含量与强度的相关性。结果表明:非晶态生成物含量与粉煤灰基地质聚合物强度正向相关。The relation between contents of crystalline or amorphous phase and compressive strength were discussed to further understand the mechanisms of flyash matrix geopolymer.Firstly,a kind of high strength flyash matrix geopolymer was prepared based on parameter optimization for alkaline activators,and specimens of different strength cured in different temperatures and for ages were prepared.Then,the microstructure of the specimens was scanned with SEM;meanwhile,the mineral quantitative ingredients of the geopolymers were analyzed by XRD-Rietveld,and the contents of crystalline or amorphous phase in geopolymers were determined.Based on the XRD results,the correlations between contents of amorphous phase substracts and strength were analyzed.The results showed that the contents of amorphous phase substracts were in a positive correlation with the strength of geoploymers.

关 键 词：地质聚合物 抗压强度 非晶体相 

分 类 号：TQ177[化学工程—硅酸盐工业]