Effect of sulfate ions and associated cation type on the pore solution chemistry in chloride-contaminated plain and blended cements

2003 ◽  
Vol 25 (4-5) ◽  
pp. 513-525 ◽  
Author(s):  
H.A.F Dehwah ◽  
M Maslehuddin ◽  
S.A Austin
Keyword(s):  
Pore Solution ◽  
Solution Chemistry ◽  
Sulfate Ions ◽  
Blended Cements ◽  
Cation Type ◽  
Chloride Contaminated

Experimental Study on the Interaction Effect of Sulfate Ions and Chloride Ions on Reinforcement Corrosion in Marine Environment

2017 ◽  
Author(s):  
Yi Huang ◽  
Yunze Xu ◽  
Xiaona Wang ◽  
Shide Song ◽  
Lujia Yang
Keyword(s):  
Passive Film ◽  
Pore Solution ◽  
Construction Materials ◽  
Chloride Ions ◽  
Localized Corrosion ◽  
Test Results ◽  
Reinforcement Corrosion ◽  
Marine Structures ◽  
Sulfate Ions ◽  
Corrosion Risk

Reinforced concrete is one of the most widely used construction materials for marine structures. Due to the abundance of the aggressive ions such as chloride ions and sulfate ions in the seawater, the reinforcement exposed to the marine and costal environment are exposed to a high corrosion risk. Localized corrosion will occur once the passive film on the rebar is damaged. In this work, the corrosion behavior of the steel in the simulated pore solution containing with both sulfate ions and chloride ions are studied by using cyclic potentialdynamic polarization methods and the corrosion morphologies observed using scanning electron microscope (SEM). The test results show that the initial rebar corrosion is caused by the absorption of the chloride ions in the passive film. The sulfate ions nearly had no effect on the corrosion of the rebar in pore solution and it can further mitigate the pitting corrosion in chloride containing pore solution.

Effect of Simulated Concrete Pore Solution Chemistry, Chloride Ions, and Temperature on Passive Layer Formed on Steel Reinforcement

2014 ◽  
Vol 111 (4) ◽  
Author(s):  
Abdulrahman Alhozaimy ◽  
Raja Rizwan Hussain ◽  
Abdulaziz Al-Negheimish ◽  
Rajeh Al-Zaid ◽  
D. D. N. Singh
Keyword(s):  
Pore Solution ◽  
Passive Layer ◽  
Chloride Ions ◽  
Steel Reinforcement ◽  
Solution Chemistry
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