Monitoring reinforcement corrosion and corrosion-induced cracking using non-destructive x-ray attenuation measurements

被引：131

作者：

Michel, Alexander ^{[1
]}

Pease, Brad J. ^{[1
]}

Geiker, Mette R. ^{[1
,2
]}

Stang, Henrik ^{[1
]}

Olesen, John Forbes ^{[1
]}

机构：

[1] Tech Univ Denmark, Dept Civil Engn, DK-2800 Lyngby, Denmark

[2] Norwegian Univ Sci & Technol NTNU, Dept Struct Engn, Trondheim, Norway

来源：

CEMENT AND CONCRETE RESEARCH | 2011年 / 41卷 / 11期

关键词：

Crack detection; EDX; Corrosion; Reinforcement; Non-destructive testing (NDT); COVER CRACKING; CONCRETE; PREDICTION; ABSORPTION; MODEL; TIME;

D O I：

10.1016/j.cemconres.2011.06.006

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

To test the applicability of the x-ray attenuation method to monitor corrosion products as well as the formation and propagation of cracks in cementitious materials, reinforced mortar samples were tested under accelerated corrosion conditions. Experimental results demonstrate x-ray attenuation measurements can track time-dependent development of corrosion products and the subsequent initiation and propagation of corrosion-induced cracks. Also, x-ray attenuation measurements allowed determination of the actual concentration of the corrosion products averaged through the specimen thickness. The total mass loss of steel, obtained by the x-ray attenuation method, was found to be in very good agreement with the mass loss obtained by gravimetric method as well as Faraday's law. Results of the presented experimental approach provide pertinent information for the further development and verification of numerical tools simulating corrosion-induced damage in reinforced concrete. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：1085 / 1094

页数：10

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