粉煤灰综合利用 FLY ASH COMPREHENSIVE UTILIZATION 2011No.6 研亮 磷酸镁水泥耐水性的影响因素与改进措施 Influencing Factors on Water Resistance of Magnesium Phosphate Cement and Its Improving Measures 毛敏,王智,王庆珍2,胡倩文,尤超2 (1.重庆大学化学化工学院,重庆400044;2.重庆大学材料科学与工程学院,重庆400045) 摘要:镁水泥(MPC)是一种新型的早强快硬胶凝材料,可作为修补材料应用于工程修补。从磷酸镁水泥的水化机 理出发,讨论磷酸镁水泥主要水化产物鸟粪石(MgNH4PO4·6H2O)的性质、形成及影响因素,及其与磷酸镁水泥耐水性 的关系。从理论上提出了通过选择合适活性、粒度和低CaO含量的原材料、优化配合比、控制体系pH值和掺加粉煤灰 等措施改善磷酸镁水泥的耐水性。 关键词:酸镁水泥;鸟粪石耐水性;水化机理 中图分类号:TQ172.729--9文献标 献标识码:A文章编号:1005-8249(2011)06-0015-04 Mao Min' ,Wang ,Wang Qing-zhen ,Hu Qian-wen' ,You Chao ( 1.College of Chemistry and Chemical Engineering ,Chongqing University ,Chongqing 400044 ; 2 .College of Material Science and Engineering ,Chongqing University ,Chongqing 400045 ) Abstract :Magnesium phosphate cement ( MPC)is a new rapid hardening cementitious material with high early strength ,which can be used as patching material in concrete repair works .Based on the hydration mechanism of MPC ,we discnssem the properties ,formation and influencing factors of main which is the maih hydration product of MPC ,struvite MgNH4P04o6H20 ),and the relationship between the struvite and water resistance of MPC was analyzed as well .For i...
磷酸镁水泥耐水性的影响因素与改进措施.pdf
