Al_(2)O_(3)基三元复合早强剂对水泥早强性能的影响研究  

Impact Studies of Al_(2)O_(3) Based Ternary Composite Early Strength Agent on Early Strength Properties of Cement

作　　者：杨涵 刘健[1,2] 吉小利[3] 徐超[1,2] 黄猛猛 YANG Han;LIU Jian;JI Xiaoli;XU Chao;HUANG Mengmeng(School of Safety Science and Engineering , Anhui University of Sciencce and Technology , Huainan 232001 , China;Key Laboratory of Ministry of Education Jointly Built by Provincial and Ministry of Coal Efficient Mining , Anhui University of Sciencce and Technology , Huainan 232001 , China;School of Chemical Engineering , Anhui University of Science and Technology , Huainan 232001 , China)

机构地区：[1]安徽理工大学安全科学与工程学院,安徽淮南232001 [2]安徽理工大学煤炭高效开采省部共建教育部重点实验室,安徽淮南232001 [3]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《河南化工》2022年第5期15-18,共4页Henan Chemical Industry

基　　金：国家级大学生创新训练项目(202110361011)。

摘　　要：将纳米氧化铝与AMPS和硫酸锂进行复配,通过抗压强度测试、XRD和SEM等的表征,研究了三元复合早强剂对水泥早强效果的影响。结果表明,纳米氧化铝、AMPS和硫酸锂复配能有效提高水泥的早强效果,且当复配早强剂的组成为PC0.15%、纳米氧化铝1.5%、AMPS 0.15%、硫酸锂1%、水灰比0.4时,使水泥早期强度提高最为显著。相较于基准组其1、3、7 d的抗压强度分别提升了46.47%、41.31%、19.51%。根据XRD和SEM的微观结构分析,纳米氧化铝、AMPS与硫酸锂复配能够加快水泥的水化反应速度,水化产物增多,使内部结构稳定致密,提高了水泥材料的早期性能和耐久性。Nano alumina is compounded with AMPS and lithium sulfate.Through compressive strength test,SRD and SEM characterization,the effect of ternary composite early strength agent on the early strength of cement is studied.The results show that the combination of nano alumina,AMPS and lithium sulfate can effectively improve the early strength effect of cement.When the composition of the composite early strength agent is PC 0.15%,nano alumina 1.5%,AMPS 0.15%,lithium sulfate 1%and the water cement ratio is 0.4,the early strength of cement is improved most significantly.Compared with the reference group,the compressive strength at 1,3,7 d increases by 46.47%,41.31%and 19.51%respectively.According to the microstructure analysis of XRD and SEM,the combination of nano alumina,AMPS and lithium sulfate can speed up the hydration reaction of cement,the increase of hydration products makes the internal structure stable and dense,and improves the early performance and durability of cement materials.

关 键 词：纳米氧化铝 硫酸锂 AMPS 复配 早期强度 

分 类 号：TQ172.12[化学工程—水泥工业]