PREVENTING REINFORCEMENT CORROSION IN CRACKED CONCRETE BY SELF-REPAIR

被引：0

作者：

Van Tittelboom, K. ^{[1
]}

Van Belleghem, B. ^{[1
]}

Dhaene, J. ^{[2
]}

Van Hoorebeke, L. ^{[2
]}

De Belie, N. ^{[1
]}

机构：

[1] Univ Ghent, Dept Struct Engn, Magnel Lab Concrete Res, Technol Pk Zwijnaarde 904, B-9052 Ghent, Belgium

[2] Univ Ghent, Ctr Xray Tomog, Dept Phys & Astron, Radiat Phys, Proeftuinstr 86, B-9000 Ghent, Belgium

来源：

II INTERNATIONAL CONFERENCE ON CONCRETE SUSTAINABILITY - ICCS16 | 2016年

基金：

比利时弗兰德研究基金会;

关键词：

Self-healing; Polyurethane; Capsules; Chloride-induced corrosion; X-ray radiography;

D O I：

暂无

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Corrosion of steel reinforcement is one of the most detrimental attack mechanisms for reinforced concrete structures. The presence of cracks, which are inextricably linked to reinforced concrete, accelerates this attack mechanism. Within this study it was aimed to heal cracks by an autonomous mechanism which is triggered upon crack appearance. During an accelerated corrosion test on mortar samples with embedded reinforcement bars, it was shown that the presence of cracks indeed accelerates the onset of corrosion and that crack healing in both, the traditional, manual way and the proposed autonomous way delay the onset of corrosion. This difference in corrosion behavior was proven by visual evaluation of the rebar surface, by means of X-ray radiography and by gravimetrical measurements which were performed after the accelerated corrosion test was finished.

引用

页码：789 / 798

页数：10

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