磷酸铵镁水泥浆体抗冻融性能试验研究  

Experimental study on freeze-thaw resistance of magnesium ammonium phosphate cement slurry

作　　者：肖益春 XIAO Yichun(Xiamen Meiyi Group Co.,Ltd.,Xiamen 361000,China)

机构地区：[1]厦门美益集团有限公司,福建厦门361000

出　　处：《四川建材》2024年第12期27-29,共3页Sichuan Building Materials

基　　金：江苏省产学研合作项目:基于磷酸镁水泥的墙体裂缝快速修补材料的开发研究(BY20230919)。

摘　　要：为研究磷酸铵镁水泥(MAPC)浆体的抗冻融性能,测试快速融环境下MAPC的强度和吸水率,并加入硅灰对其进行改性研究。研究结果表明:经过300次融后,参考样MAPC试件(M0)和10%硅灰的MAPC试件(M1)的抗压强度分别降低18.6%、15.1%;经过300次融后,M0和M1的吸水率分别上升0.43%和0.36%。适量硅灰改性MAPC后,可与MgO形成较好的颗粒级配,提高MAPC浆体试件的密实度,减小在融环境下MAPC浆体的强度损失和吸水率增长。In order to study the freeze-thaw resistance of magnesium ammonium phosphate cement(MAPC)slurry,the strength and water absorption of MAPC were tested under rapid thawing conditions,and modified with silica fume.The research results showed that after 300 cycles of melting,the compressive strength of the reference MAPC specimen(M0)and the MAPC specimen with 10%silica fume(M1)decreased by 18.6%and 15.1%,respectively;After 300 cycles of melting,the water absorption rates of M0 and M1 increased by 0.43%and 0.36%,respectively.After appropriate modification of MAPC with silica fume,it can form a better particle size distribution with MgO,improve the compactness of MAPC slurry specimens,and reduce the strength loss and water absorption growth of MAPC slurry in the melting environment.

关 键 词：磷酸铵镁水泥 硅灰 冻融 

分 类 号：TQ172.1[化学工程—水泥工业]