Steel detection in reinforced concrete wall by microwave infrared thermography

被引:39
作者
Keo, Sam Ang [1 ,2 ]
Brachelet, Franck [1 ,2 ]
Breaban, Florin [1 ,3 ]
Defer, Didier [1 ,2 ]
机构
[1] PRES Lille Nord France, Lab Genie Civil & Geoenvironm, F-62400 Bethune, France
[2] Fac Sci Appl, F-62400 Bethune, France
[3] Inst Univ Technol, F-62400 Bethune, France
关键词
Steel; Reinforced concrete; Microwave; Infrared thermography; NONDESTRUCTIVE EVALUATION; DEPTH;
D O I
10.1016/j.ndteint.2013.12.002
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
This paper presents a NDT by infrared thermography with a microwave excitation system. The advantages of such stimulation lie in the volumetric absorption of incoming waves which lead to a greater sounded depth. The device generating the microwaves was made of a commercial magnetron 800 W at 2.45 GHz associated with a pyramidal horn antenna. This method was applied to detect the steel reinforcements (deformed bar 12 mm of diameter placing at every 10 cm) in a concrete specimen (1 m x 1m x 6.5 cm) with a concrete cover of 3.8 cm. The specimen was heated with an average power of 600 W for 5 min. An infrared camera was placed on the same side as the stimulated surface and thermograms were recorded at regular intervals. The whole assembly was placed in a protective enclosure against high frequency electromagnetic fields. The method based on a contrast algorithm was used to analyze the thermogram series. The result shows a higher temperature rise in front of the steel reinforcement areas. The effect of microwave caused an increase in moderate temperature does not lead to alteration of inspected concrete. Crown Copyright 2013 Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码:172 / 177
页数:6
相关论文
共 24 条
[1]   Infrared thermography for building diagnostics [J].
Balaras, CA ;
Argiriou, AA .
ENERGY AND BUILDINGS, 2002, 34 (02) :171-183
[2]  
Bangay M, 2004, AUSTR RAD PROT NUCL
[3]  
Barnes Reuben, 2008, E J NONDESTRUCTIVE T
[4]  
Brown Jeff R, 2010, CONSTRUCTION BUILDIN
[5]   Experimental analysis of microwave heating of dielectric materials using a rectangular wave guide (MODE: TE10) (Case study: Water layer and saturated porous medium) [J].
Cha-um, Waraporn ;
Rattanadecho, Phadungsak ;
Pakdee, Watit .
EXPERIMENTAL THERMAL AND FLUID SCIENCE, 2009, 33 (03) :472-481
[6]   Defect detection of concrete structures using both infrared thermography and elastic waves [J].
Cheng, Chia-Chi ;
Cheng, Tao-Ming ;
Chiang, Chih-Hung .
AUTOMATION IN CONSTRUCTION, 2008, 18 (01) :87-92
[7]   Application of infrared thermography to the non-destructive testing of concrete and masonry bridges [J].
Clark, MR ;
McCann, DM ;
Forde, MC .
NDT & E INTERNATIONAL, 2003, 36 (04) :265-275
[8]   A procedure to measure electromagnetic skin depth in microwave heating [J].
Cuccurullo, G ;
Pierro, V .
INFRARED PHYSICS & TECHNOLOGY, 2004, 46 (1-2) :49-55
[9]   IR temperature measurements in microwave heating [J].
Cuccurullo, G ;
Berardi, PG ;
Carfagna, R ;
Pierro, V .
INFRARED PHYSICS & TECHNOLOGY, 2002, 43 (3-5) :145-150
[10]  
Galietti U, 2012, 11 INT C QUANT INFRA