摘要
目的研究不同腐蚀介质对磷酸盐快补材料的影响,为防腐蚀设计提供理论基础.方法根据现有磷酸盐快补材料耐腐蚀的定义和评价指标,研究5种腐蚀介质对磷酸盐快补材料力学性能、体积稳定性和强度保留率的影响,进而得出其耐腐蚀能力的强弱.结果磷酸盐快补材料的抗压和抗折强度随龄期的增长其变化趋势大致相同.各种溶液中的磷酸盐快补材料的干缩率随龄期的增加而增加,28d龄期以前的增长幅度较大,后期增长幅度明显降低.磷酸盐快补材料在5种腐蚀介质中的强度保留率最高为53.91%,最低22.43%.结论磷酸盐快补材料在盐腐蚀介质中,耐腐蚀较强;在酸碱腐蚀介质中,耐腐蚀较差.
The influence of different corrosion medium on phosphate fast mending material is studied,which provides a theoretical basis for corrosion protection design. Based on the existing definition and evaluation index of corrosion resistance of phosphate fast filling material, the effects of five corrosion mediums on mechanical properties,v olume stability and strength retention of phosphate fast mending material were studied,and their corrosion resistance was obtained. The compressive strength and flexural strength of phosphate fast mending material are approximately the same with the increase of age. All kinds of solution of phosphate fast mending material shrinkage increases with age,before 28 d age, the growth rate was larger,and the late growth rate decreased obviously. The highest strength retention rate of phosphate fast mending material in 5 corrosion media was 3. 91%, the lowest 2. 43%. Phosphate fast mending material has stronger corrosion resistance in salt corrosion medium,and it has poor corrosion resistance in acid base corrosion medium.
作者
俞家欢
闫林伟
卢俊萍
顾章义
YU Jiahuan YAN Linwei LU Junping GU Zhangyi(School of Civil Engineering, Shenyang Jianzhu University, Shenyang, China, 110168 School of Transporta- tion Engineering, Shenyang Jianzhu University, Shenyang, China, 110168 School of Science, Shenyang Jianzhu University, Shenyang, China, 110168)
出处
《沈阳建筑大学学报（自然科学版）》
CAS
CSCD
北大核心
2017年第5期890-897,共8页
Journal of Shenyang Jianzhu University：Natural Science
基金
国家自然科学基金项目(51478276)
关键词
磷酸镁水泥基复合材料
力学性能
体积稳定性
强度保留率
耐腐蚀
magnesium phosphate cement matrix composite
mechanical properties
volume stability
strength retention rate
corrosion resistance
