氟铝络合物对硫酸铝型速凝剂性能的影响  

Effect of Fluoro-aluminum Complexes on the Properties of Aluminum SulfateType Accelerator

作　　者：陈镇杉 吴玉生 彭鹏飞 黄舟 陈梅红 蔡博群 CHEN Zhenshan;WU Yusheng;PENG Pengfei;HUANG Zhou;CHEN Meihong;CAI Boqun(China Building Material&Certification Group Xiamen Co.,Ltd,Xiamen 361000,China;College of Architecture and Civil Engineering,Beijing University of Technology,Beijing 100022,China)

机构地区：[1]中国建材检验认证集团厦门宏业有限公司,厦门361000 [2]北京工业大学建筑工程学院,北京100022

出　　处：《材料导报》2020年第S01期178-180,共3页Materials Reports

基　　金：厦门市建设局科技计划项目(XJK2019-1-3)。

摘　　要：本工作研究了硫酸铝型速凝剂中氟铝络合物含量对速凝剂凝结时间和胶砂强度性能的影响。结果表明,在硫酸铝型速凝剂中,氟铝络合物增加,速凝剂促凝效果增加,但胶砂1 d抗压强度则总体降低。热分析和XRD测试结果表明,氟铝络合物能促进水泥钙矾石形成,缩短凝结时间,同时可能生成某种含氟的水化产物,抑制水泥1 d水化程度,且该产物不一定是CaF2。In this paper,the influence of the content of fluoro-aluminum complexes in aluminum sulfate type accelerator on the setting time and compressive strength was studied.The results showed that when the content of the fluoro-aluminum complexes in the aluminum sulfate type accelerator increased,the accelerating effect of the accelerator increased,but the 1 d compressive strength decreased.Thermal analysis and XRD test results show that the fluoro-aluminum complexes can promote the formation of AFt in cement,shorten the setting time,and may generate some fluorine-containing hydration products to inhibit the 1 d hydration.The fluorine-containing hydration products may not be CaF2.

关 键 词：氟铝络合物 速凝剂 抗压强度 水化产物 

分 类 号：TU528.42[建筑科学—建筑技术科学]