Corrosion behavior of steel rebar embedded in hybrid CNTs-OH/polyvinyl alcohol modified concrete under accelerated chloride attack

2019 ◽  
Vol 100 ◽  
pp. 120-129 ◽  
Author(s):  
Zhongkun Wang ◽  
Jing Yu ◽  
Gengying Li ◽  
Min Zhang ◽  
Christopher K.Y. Leung
Keyword(s):  
Polyvinyl Alcohol ◽  
Corrosion Behavior ◽  
Steel Rebar ◽  
Chloride Attack

Corrosion behavior of steel rebar in coal gangue-based mortars

2010 ◽  
Vol 11 (5) ◽  
pp. 382-388 ◽  
Author(s):  
Ji-xiu Zhang ◽  
Heng-hu Sun ◽  
Yin-ming Sun ◽  
Na Zhang
Keyword(s):  
Corrosion Behavior ◽  
Coal Gangue ◽  
Steel Rebar

Effect of chromium micro-alloying on the corrosion behavior of a low-carbon steel rebar in simulated concrete pore solutions

2017 ◽  
Vol 32 (6) ◽  
pp. 1453-1463 ◽  
Author(s):  
Dan Song ◽  
Jinyang Jiang ◽  
Wei Sun ◽  
Han Ma ◽  
Jianchun Zhang ◽  
...  
Keyword(s):  
Carbon Steel ◽  
Corrosion Behavior ◽  
Low Carbon Steel ◽  
Low Carbon ◽  
Steel Rebar

Study of EMISE Ionic Liquids Inhibitor on the Corrosion Behavior of Steel Rebar by Statistical Methods in Alkaline Chloride Solution

2014 ◽  
Vol 941-944 ◽  
pp. 1362-1366
Author(s):  
Xin Zhou ◽  
Guoxi Wu ◽  
Ren Chen
Keyword(s):  
Distribution Function ◽  
Ionic Liquids ◽  
Corrosion Behavior ◽  
Chloride Solution ◽  
Electrochemical Noise ◽  
Stochastic Theory ◽  
Gumbel Distribution ◽  
Inhibition Effect ◽  
Steel Rebar ◽  
Corrosion Pitting

The pit corrosion behavior of steel rebar in alkaline chloride solutions without and with EMISE ionic liquids inhibitor were investigated by means of electrochemical noise (EN). The experimental results of electrochemical noise measurement revealed that the pit corrosion was inhibited and corrosion pitting process was retarded significantly. The mechanism of the inhibition effect of the inhibitor was analyzed based upon the combined stochastic theory and shot noise theory using the Weibull distribution and Gumbel distribution function.

scholarly journals Corrosion Behavior of Reinforcing Steel Undergoing Stray Current and Anodic Polarization

Materials ◽  
2021 ◽  
Vol 14 (2) ◽  
pp. 261
Author(s):  
Zhipei Chen ◽  
Dessi Koleva
Keyword(s):  
Corrosion Behavior ◽  
Anodic Polarization ◽  
Cathodic Polarization ◽  
Product Layer ◽  
Reinforcing Steel ◽  
Stray Current ◽  
Polarization Effects ◽  
Steel Rebar ◽  
Corrosion Product Layer ◽  
Curing Regimes

Different concrete structures (viaducts, bridges, or tunnels) in the neighborhoods of railways may be subject to the stray current leaking from the rails. In these cases, the reinforcing rebars embedded in concrete act as conductors, “pick up” the stray current, and can corrode. For simulating the stray current-induced corrosion of metals, most researchers just supplied anodic polarization on samples. However, stray current induces both cathodic polarization and anodic polarization. This work experimentally justifies the different effects of stray current and anodic polarization on reinforcing steel embedded in mortar. A comparison between stray current and anodic polarization effects on the corrosion behavior of embedded steel is performed for both fresh (24 hour-cured) and hardened matrix (28 day-cured) in chloride-free (Cl-free) and chloride-containing (Cl-containing) environments. It is found that in all studied conditions, anodic polarization leads to a significantly different electrochemical performance of the steel rebar compared to the stray current. Hence, anodic polarization cannot reflect all the effects of stray current, and therefore, it has limited significance for simulating stray current. It is also clarified that the curing regimes and starting time of the stray current play significant roles in the formation of a corrosion product layer on the steel surface.

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