scholarly journals LATERAL LOADED PILE DURABILITY IN CASE OF CHLORIDE CORROSION

2016 ◽  
Author(s):  
Janusz Kozubal
Keyword(s):  
Chloride Corrosion

scholarly journals Numerical Simulation of Non-Uniformly Distributed Corrosion in Reinforced Concrete Cross-Section

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3975
Author(s):  
Magdalena German ◽  
Jerzy Pamin
Keyword(s):  
Reinforced Concrete ◽  
Cross Section ◽  
Chloride Transport ◽  
Chloride Concentration ◽  
Corrosion Current ◽  
Chloride Diffusion ◽  
Chloride Diffusion Coefficient ◽  
Initiation Phase ◽  
Chloride Corrosion ◽  
Cover Thickness

Reinforced concrete structures can be strongly damaged by chloride corrosion of reinforcement. Rust accumulated around rebars involves a volumetric expansion, causing cracking of the surrounding concrete. To simulate the corrosion progress, the initiation phase of the corrosion process is first examined, taking into account the phenomena of oxygen and chloride transport as well as the corrosion current flow. This makes it possible to estimate the mass of produced rust, whereby a corrosion level is defined. A combination of three numerical methods is used to solve the coupled problem. The example object of the research is a beam cross-section with four reinforcement bars. The proposed methodology allows one to predict evolving chloride concentration and time to reinforcement depassivation, depending on the reinforcement position and on the location of a point on the bar surface. Moreover, the dependence of the corrosion initiation time on the chloride diffusion coefficient, chloride threshold, and reinforcement cover thickness is examined.

Influence of chloride corrosion on tension capacity of rebars

2021 ◽  
Vol 28 (10) ◽  
pp. 3018-3028
Author(s):  
Mohammad Ghanooni-Bagha
Keyword(s):  
Chloride Corrosion ◽  
Tension Capacity

Screening Tests of Inhibitors to Prevent Chloride Stress Corrosion★

CORROSION ◽  
1959 ◽  
Vol 15 (9) ◽  
pp. 18-22 ◽  
Author(s):  
J. H. PHILLIPS ◽  
W. J. SINGLEY
Keyword(s):  
Stress Corrosion ◽  
Sodium Sulfite ◽  
Screening Tests ◽  
Test Results ◽  
Corrosion Attack ◽  
Concentration Effects ◽  
Boiler Water ◽  
Chloride Corrosion ◽  
Alkaline Phosphate ◽  
Potential Inhibitors

Abstract Series of screening tests were run in tilting autoclaves to evaluate performance of selected, potential inhibitors in preventing chloride stress corrosion attack of Type 347 austenitic stainless steel in alkaline-phosphate boiler water containing 50 or 500 ppm chloride. From the test results, several inhibitors were tested further to evaluate concentration effects. Nitrate appeared to be a satisfactory inhibitor for oiler applications. Sodium sulfite also effectively prevented chloride corrosion cracking oy scavenging oxygen. 5.8.4

In vitro chloride corrosion behaviour of Dispersalloy

1975 ◽  
Vol 2 (2) ◽  
pp. 139-144 ◽  
Author(s):  
N. K. SARKAR ◽  
E. H. GREENER
Keyword(s):  
Corrosion Behaviour ◽  
Chloride Corrosion

scholarly journals Hysteretic Behavior of Eccentrically Loaded Reinforced Air-Entrained Concrete Columns under Combined Effects of Freeze-Thaw Cycles and Seawater Corrosion

2018 ◽  
Vol 2018 ◽  
pp. 1-10
Author(s):  
Jieqiong Wu ◽  
Jian Zhang ◽  
Bo Diao ◽  
Shaohong Cheng ◽  
Yinghua Ye
Keyword(s):  
Cyclic Load ◽  
Concrete Columns ◽  
Hysteretic Behavior ◽  
Eccentric Load ◽  
Freeze Thaw ◽  
Chloride Corrosion ◽  
Seawater Corrosion ◽  
Asymmetric Pattern ◽  
Considerable Impact ◽  
Air Entrained Concrete

Besides service loads, reinforced concrete structures in cold coastal seismic regions are subjected to multiple attacks of freeze-thaw cycles and seawater corrosion as well as the earthquake struck. An experimental study was conducted to investigate the seismic response of eccentrically loaded reinforced air-entrained concrete columns under alternative actions of freeze-thaw cycles and chloride corrosion. Results show that, after 300 times of freeze-thaw cycles alternated with 100 times of seawater immersion, the hysteretic behavior of the eccentrically loaded columns manifested an apparent asymmetric pattern. Under forward cyclic load, the existence of larger eccentric load rendered the reduction of the ultimate load and the ductility of a column by up to 20.3% and 46.05%, respectively, but it had a positive effect if reverse cyclic load was applied. The presence of eccentric load could have a considerable impact on the seismic behavior of reinforced air-entrained concrete columns served in an aggressive environment.

An in-situ X-ray absorption spectroelectrochemistry study of the response of artificial chloride corrosion layers on copper to remedial treatment

2009 ◽  
Vol 24 (1) ◽  
pp. 62-68 ◽  
Author(s):  
Annemie Adriaens ◽  
Mark Dowsett ◽  
Gareth Jones ◽  
Karen Leyssens ◽  
Sergey Nikitenko
Keyword(s):  
X Ray ◽  
Chloride Corrosion ◽  
X Ray Absorption
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