Investigation of the residual protection of steel following application of protective current

被引：5
作者：
Bhuiyan, Shamir [1 ]
Law, David W. [1 ]
Nicholls, Peter [1 ,2 ]
Christodoulou, Christian [3 ]
机构：
[1] RMIT Univ, Sch Engn, Melbourne, Vic 3001, Australia
[2] Fressyinet Australia, 217 Arden St, North Melbourne, Vic 3051, Australia
[3] AECOM Ltd, Colmore Bldg,20 Colmore Circus Queensway, Birmingham B4 6AT, W Midlands, England
来源：
CONSTRUCTION AND BUILDING MATERIALS | 2018年 / 162卷
关键词：
Reinforced concrete; Cathodic protection; Corrosion; Residual protection; Passivity; CATHODIC PROTECTION; REINFORCED-CONCRETE; CORROSION; PERFORMANCE; CHLORIDE; FIELD;
D O I：
10.1016/j.conbuildmat.2017.12.049
中图分类号：
TU [建筑科学];
学科分类号：
0813 ;
摘要：
Recent studies have shown that when the operation of steel reinforced concrete impressed current cathodic protection systems is halted the steel can remain passive for a period of time. This paper reports a systematic study using both laboratory specimens and a small scale site trial to investigate the factors influencing the occurrence and duration of residual protection using charge densities of 20, 60, 180 and 540 mA/m(2). Both the laboratory and site specimens demonstrated short term residual protection. The results indicated that the residual protection was dependant on both the duration and charge passed, with longer periods of protection observed on site following a second application of current. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：503 / 511
页数：9
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