Use of infrared thermal imaging to detect corrosion of epoxy coated and uncoated rebar in concrete

被引：48

作者：

Goffin, Brigitte ^{[1
,2
]}

Banthia, Nemkumar ^{[1
]}

Yonemitsu, Noboru ^{[1
]}

机构：

[1] Univ British Columbia, Dept Civil Engn, 1012J-6250 Appl Sci Lane, Vancouver, BC V6T 1Z4, Canada

[2] 25 King St, Brisbane, Qld 4006, Australia

来源：

CONSTRUCTION AND BUILDING MATERIALS | 2020年 / 263卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Epoxy coated rebar; Corrosion; Thermography; SILICON; STEEL;

D O I：

10.1016/j.conbuildmat.2020.120162

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Infrared thermal imaging is a novel corrosion detection technique that is influenced by the thermal properties of the object under investigation. This study investigated the effect of corrosion of epoxy coated and uncoated rebar on the thermal behaviour of reinforced concrete without electromagnetic influences. A heating element was inserted into the rebar embedded in concrete. The heating element heated the rebar from the inside and the thermal response on the concrete surface was monitored with an infrared camera. The thermal measurements showed that corrosion thermally insulated uncoated rebar. However, corrosion of epoxy coated rebar led to cracking of the coating and thereby reduced the thermal insulation of the rebar. (C) 2020 Elsevier Ltd. All rights reserved.

引用

页数：12

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