权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

PRACTICAL APPLICATION OF ELECTRODEPOSITION METHOD FOR THE CRACK REPAIR OF REINFORCED CONCRETE STRUCTURE ON LAND AND UNDERGROUND.

电沉积法在陆地和地下钢筋混凝土结构裂缝修复中的实际应用。

基本信息

批准号：
13555122
负责人：
OTSUKI Nobuaki
金额：
$ 8.83万
依托单位：
TOKYO INSTITUTE OF TECHNOLOGY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2001
资助国家：
日本
起止时间：
2001 至 2002
项目状态：
已结题

项目摘要

1. THE USE OF CHEMICAL AND ELECTROCHEMICAL PROCESS IN VERIFYING THE MECHANISM OF ELECTRODEPOSITION IN A CRACK-REPAIRED REINFORCED CONCRETE CONFIRMED THE SUITABILITY OF THIS METHOD FOR LAND-BASED REINFORCED CONCRETE MEMBER.2. BOTH OF CRACKS IN UNDER GROUND MEMBER AND LAND-BASED MEMBER COULD BE CLOSED BY ELECTRODEPOSITION METHOD.3. THE CLOSURE DEPTH OF ELECTRODEPOSITS OF UNDERGROUND MEMBER WAS SMALLER THAN THAT OF LAND-BASED MEMBER.4. THE CRACKS WITH WATER LEAKAGE IN AN EXISTING REINFORCED CONCRETE MEMBER ON LAND COULD BE CLOSED USING THE APPROPRIATE ELECTRODEPOSITION CONDITIONS THROUGH THE FIELD TEST.5. IN THIS RESEARCH THE DURABILITY OF REINFORCED CONCRETE REPAIRED BY ELECTRODEPOSITION METHOD WAS INVESTIGATED. AS A RESULT, IT WAS CONFIRMED THAT THE REPAIR EFFECT CAN BE KEPT EVEN AFTER 2-YEARS PERIOD EXPOSURE.6. THE APPARENT WATER PERMEABILITY OF ELECTRO-DEPOSITED CONCRETE AFTER 2-YEAR PERIOD EXPOSED WAS MUCH SMALLER THAN THAT OF NON-ELECTRODEPOSITED CONCRETE WITH CRACK.7. ELECTRODEPOSITED CONCRETE AFTER 2-YEAR PERIOD EXPOSED HAD A STABLE CLOSED CRACK CONDITION BECAUSE IT WAS PROPERLY SEALED AND COATED WITH ELECTRODEPOSITS.8. FROM THE VIEWPOINT OF DURABILITY, THE RESULTS OF THE EXPERIMENTAL INVESTIGATIONS INDICATED THAT ELECTRODEPOSITION METHOD WAS AN EFFECTIVE CRACK REPAIR METHOD BECAUSE IT HAD A CRACK CLOSING EFFECT, RE-ALKALIZATION EFFECT, AND CORROSION PROTECTION EFFECT THAT STABILIZED THE REPAIRED SECTION OF REINFORCED CONCRETE MEMBER.

1. 利用化学和电化学方法验证了电沉积在裂缝修补钢筋混凝土中的机理，证实了该方法对陆基钢筋混凝土构件的适用性。地下构件和陆上构件的裂缝均可采用电沉积法闭合。3 .地下段的矿床闭合深度小于陆基段。4 .通过现场试验，采用合适的电沉积条件，可以对陆地既有钢筋混凝土构件的漏水裂缝进行封堵。本文对电沉积法修复钢筋混凝土的耐久性进行了研究。结果表明，即使经过2年的暴露，其修复效果仍能保持。电沉积混凝土暴露2年后的表观透水性明显小于未电沉积混凝土。电沉积混凝土暴露2年后具有稳定的闭合裂缝状态，这是由于电沉积层的适当密封和涂覆。从耐久性的角度来看，试验研究结果表明，电沉积法是一种有效的裂缝修复方法，因为电沉积法具有裂缝闭合作用、再碱化作用和防腐作用，使钢筋混凝土构件的修复截面稳定。