复合型水下混凝土裂缝高效修补材料试验研究  

Experimental research on compound mending materials for underwater concrete crack

作　　者：石妍[1] 王迎春[1] 李家正[1] 杨华全[1] 

机构地区：[1]长江科学院水利部水工程安全与病害防治工程技术研究中心,湖北武汉430010

出　　处：《人民长江》2011年第4期84-87,共4页Yangtze River

基　　金：中央级公益性科研院所基本科研业务费(YJJ0808);公益性行业科研专项资金项目(200901066)

摘　　要：迄今为止,鲜有一种修补材料能在完全充水条件下完成一定开度混凝土裂缝的修补工作,因此设计一种适用于水下施工的修补材料具有重要意义。该修补材料是以无机材料为主体的复合材料,利用了复合水泥和添加剂的叠加效应。主要满足3个性能要求:良好的水下抗分散性、水下快凝、与老混凝土粘结性强。对此,开展了一系列试验研究工作,并由试验结果初步确定了材料的核心组分及掺量范围,并就性能展开了微观机理分析,为下一步该材料耐久性、施工性能等的试验研究奠定了基础。Few mending materials applicable to underwater repairing work have been developed.Therefore,it is significant to synthesize a new mending material for underwater construction.The presented material is a composite one dominated by inorganic ingredients with the aid of superimposed effect of composite cement and additive.The demands for the new material include anti-dispersion,rapid solidification and strongly bonding with old concrete.We have carried out experimental studies to determine the core component of the material and dosage range,and provide a basis for further tests of its durability and workability and so on.

关 键 词：混凝土裂缝 水下修补材料 凝结时间 水下抗分散性 粘结强度 

分 类 号：TV43[水利工程—水工结构工程]