高流动性磷酸铵镁水泥硬化浆体耐盐腐蚀性能试验研究  

Salt Corrosion Resistance of Hardened Slurry of Magnesium Ammonium Phosphate Cement with High Fluidity

作　　者：李涛 张继文[2] 姜海楼 杨建明[3] LI Tao;ZHANG Jiwen;JIANG Hailou;YANG Jianming(School of Civil Engineering,San Jiang University,Nanjing 210012,China;School of Civil Engineering,Southeast University,Nanjing 210096,China;School of Civil Engineering,Yancheng Institute of Technology,Yancheng 224051,China)

机构地区：[1]三江学院土木工程学院,南京210012 [2]东南大学土木工程学院,南京210096 [3]盐城工学院土木工程学院,盐城224051

出　　处：《硅酸盐通报》2021年第3期750-757,共8页Bulletin of the Chinese Ceramic Society

基　　金：中国铁路总公司科研项目(P2018G005);国家自然科学基金面上项目(51578475)。

摘　　要：为研究高流动性磷酸铵镁水泥(MAPC)硬化浆体耐盐腐蚀性能,通过测试高流动性MAPC的抗压强度、抗折强度、变形、吸水率、流动性、水化温度曲线以及微观形貌,对比研究了空白组M0和单掺水玻璃M1的MAPC硬化浆体长期浸泡在清水、氯化钠和硫酸钠溶液中的相关性能。试验结果表明:单掺水玻璃提高了MAPC硬化浆体的早期水化反应速率以及流动性;单掺水玻璃提高了MAPC硬化浆体的强度,改善了变形,降低了吸水率。此外,单掺水玻璃的M1浆体试块无论在何种溶液下进行浸泡,其性能均优于空白组M0,其中在硫酸盐溶液下性能最佳。In order to study the salt corrosion resistance of hardened slurry of magnesium ammonium phosphate cement with high fluidity.The compressive strength,flexural strength,deformation,water absorption,fluidity,hydration temperature curve and microstructure of MAPC cement with high fluidity were tested.The properties of MAPC hardened slurry of the blank group M0 and single mixing water glass M1 immersed in water,sodium chloride and sodium sulfate solutions for a long time were studied.The experimental results show that the early hydration reaction rate and fluidity of MAPC hardened slurry are improved by single mixing water glass.The strength,deformation and water absorption of MAPC hardened slurry are improved by single mixing water glass.In addition,no matter under any solution,the performance of M1 slurry sample of single mixing water glass is better than that of the blank group M0,and the performance is the best under sulfate solution.

关 键 词：磷酸铵镁水泥(MAPC) 高流动性 硬化浆体 腐蚀 水玻璃 强度 

分 类 号：TQ172[化学工程—水泥工业]