电压对锈裂钢筋混凝土电泳沉积修复效果的影响  

Influence of Voltage on the Repair Effect of Electrophoretic Deposition of Rust-Cracked Reinforced Concrete

作　　者：王月明 王长丹[1,2] 周顺华[1,2] 刘开伟[3] WANG Yueming;WANG Changdan;ZHOU Shunhua;LIU Kaiwei(Key Laboratory of Road and Traffic Engineering of Ministry of Education,Tongji University,Shanghai 201804,China;Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety,Tongji University,Shanghai 201804,China;Anhui Province Engineering Laboratory of Advanced Building Materials,Anhui Jianzhu University,Hefei 230601,China)

机构地区：[1]同济大学道路交通工程教育部重点实验室,上海201804 [2]同济大学上海市轨道交通结构耐久与系统安全重点实验室,上海201804 [3]安徽建筑大学安徽省先进建筑材料工程实验室,安徽合肥230601

出　　处：《建筑材料学报》2022年第12期1277-1283,共7页Journal of Building Materials

基　　金：国家自然科学基金资助项目(51778485,51608384)。

摘　　要：提出了以高性能环氧树脂溶液为修复溶液的电泳沉积修复法,研究了修复过程中各电压下锈胀开裂钢筋混凝土试件裂缝面形貌、电阻、沉积膜厚度的变化规律,以及电压对修复后试件防水和抗碳化性能的影响.结果表明:电泳沉积修复24 h后各试件的裂缝皆可完全愈合,电压越高,锈胀裂缝愈合越快,裂缝面环氧树脂沉积膜越厚,电阻越大;修复后试件的防水和抗碳化性能显著提升,相较于高电压,低电压修复后试件的防水性能更好;电压对修复后试件的抗碳化性能影响不大.The electrophoretic deposition repair method with high-performance epoxy resin solution as the repair solution was proposed. The crack surface morphology,resistance and deposition film thickness of the specimen under various voltages during the repair process,as well as the influence of voltage on the waterproof and carbonation resistance of the repaired specimen were studied. The results show that all the cracks heal completely after 24 hours of electrophoretic deposition. The higher the voltage is,the faster the cracks heal,the thicker the epoxy resin deposition film on the crack surface is,and the higher the resistance is. The waterproofing and carbonation resistance of the repaired specimens were significantly improved. Compared with high voltage,the waterproofing performance of the repaired specimens was better after low voltage,while the voltage level had little effect on the carbonation resistance of the repaired specimens.

关 键 词：锈胀开裂钢筋混凝土 电泳沉积修复 电压 环氧树脂 防水性能 抗碳化性能 

分 类 号：TG174.41[金属学及工艺—金属表面处理]