Experimental investigation on the short-term impact of temperature and moisture on reinforcement corrosion

被引：24

作者：

Michel, A. ^{[1
,3
]}

Nygaard, P. V. ^{[2
]}

Geiker, M. R. ^{[1
,3
]}

机构：

[1] Tech Univ Denmark DTU, Dept Civil Engn, Lyngby, Denmark

[2] Swiss Fed Labs Mat Sci & Technol EMPA, Abt Beton Bauchem, Dubendorf, Switzerland

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

来源：

CORROSION SCIENCE | 2013年 / 72卷

关键词：

Steel reinforced concrete; Polarization; Atmospheric corrosion; CONCRETE STRUCTURES; SERVICE LIFE; STEEL; POLARIZATION; CARBONATION; EVOLUTION; HUMIDITY; REBARS; RATES;

D O I：

10.1016/j.corsci.2013.02.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, reinforced concrete specimens with and without mixed-in chlorides were conditioned at different relative humidities and subsequently subjected to varying temperatures. Results of the study confirmed that neither temperature nor moisture content have a major impact on the corrosion state and rate of passively corroding reinforcement. For actively corroding reinforcement, a temperature and moisture dependent corrosion rate was observed. The temperature dependency could be described by the Arrhenius equation with moisture dependent activation energies of approximately 10 kJ/mol at 75 RH and 35-40 kJ/mol above 85% RH. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：26 / 34

页数：9

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