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首页 > 过刊浏览>2022年第25卷第12期 >1277-1283. DOI:10.3969/j.issn.1007-9629.2022.12.009
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电压对锈裂钢筋混凝土电泳沉积修复效果的影响
作者:
作者单位:

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

作者简介:

王月明（1993—），男，黑龙江佳木斯人，同济大学博士生．E-mail：2395771145@qq.com

通讯作者:

王长丹（1982—），男，山西太原人，同济大学副教授，博士生导师，博士.E-mail：2008wangchangdan@tongji.edu.cn

中图分类号:

TG174.41

基金项目:

国家自然科学基金资助项目（51778485，51608384）


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

1.Key Laboratory of Road and Traffic Engineering of Ministry of Education， Tongji University， Shanghai 201804， China;2.Shanghai Key Laboratory of Rail Infrastructure Durability and System Safety， Tongji University， Shanghai 201804， China;3.Anhui Province Engineering Laboratory of Advanced Building Materials， Anhui Jianzhu University， Hefei 230601， China

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    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.

    Abstract:

    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.

    表 2 水泥的化学组成Table 2 Chemical composition of cement
    表 3 修复后环氧树脂在裂缝中的平均填充深度Table 3 Average filled depth of epoxy resin in cracks after repair
    图1 锈胀开裂砂浆试件Fig.1 Rust-cracked mortar specimen
    图2 修复系统示意图Fig.2 Schematic diagram of repair system
    图3 试件裂缝面形貌的变化Fig.3 Changes of crack surface morphology of specimens
    图4 沉积膜的平均厚度Fig.4 Average thickness of deposition film
    图5 试件质量的增加量Fig.5 Mass increment of specimens
    图6 试件的电阻值Fig.6 Resistance values of specimens
    图7 修复后环氧树脂在裂缝中的填充分布情况Fig.7 Filled distribution of epoxy resin in cracks after repair
    图8 不同试件的吸水量Fig.8 Water absorption of different specimens
    图9 40 V电压修复后试件的剖面形貌Fig.9 Specimen profile morphology after 40 V voltage repaired
    表 1 高性能环氧树脂胶体溶液的基本性能Table 1 Basic properties of high performance epoxy resin colloid solution
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王月明,王长丹,周顺华,刘开伟.电压对锈裂钢筋混凝土电泳沉积修复效果的影响[J].建筑材料学报,2022,25(12):1277-1283

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  • 收稿日期:2021-09-28
  • 最后修改日期:2021-12-17
  • 在线发布日期: 2023-01-30
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