scholarly journals Structural Materials. Corrosion Protection Behavior of Reinforcing Steel after Desalination on Concrete Structure.

1999 ◽  
Vol 48 (8) ◽  
pp. 907-912 ◽  
Author(s):  
Takao UEDA ◽  
Masanobu ASHIDA ◽  
Toyoaki MIYAGAWA
Keyword(s):  
Corrosion Protection ◽  
Concrete Structure ◽  
Structural Materials ◽  
Reinforcing Steel

Improvement of intelligent corrosivity-detection and corrosion-protection for reinforcing steel

2021 ◽  
pp. 109396
Author(s):  
Peng-Peng Wu ◽  
Guang-Ling Song ◽  
Yi-Xing Zhu ◽  
Lei Yan ◽  
Zhen-Liang Feng ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Reinforcing Steel

scholarly journals Corrosion protection of reinforcing steel reinforced concrete structures of transport structures

2020 ◽  
Vol 7 (1) ◽  
Author(s):  
Alexander Bulkov ◽  
Michail Baev ◽  
Igor Ovchinnikov
Keyword(s):  
Reinforced Concrete ◽  
Corrosion Protection ◽  
Concrete Structures ◽  
Steel Corrosion ◽  
High Strength ◽  
Curing Temperature ◽  
Reinforced Concrete Structures ◽  
Reinforcing Steel ◽  
Steel Reinforced Concrete ◽  
Advantages And Disadvantages

The influence of reinforcing steel corrosion on the durability of reinforced concrete structures of transport structures and the degree of knowledge of this problem is considered. It is specified that the protection of reinforcing steel from corrosion is not able to completely replace the correct design and use of high-strength concrete. But it is able to extend the life of reinforced concrete structures. It is noted that corrosion of the reinforcement leads to a decrease in the structural strength due to wear and tear and by a third of the period of operation of reinforced concrete structures, as a result of which transport structures collapse. As an example of the detrimental effect of corrosion of reinforcing steel on the durability of transport structures, examples of accidents of bridges and overpasses caused by this type of corrosion are given. As a result, a conclusion is drawn on the advisability of ensuring a sufficient level of corrosion protection of reinforcing steel to achieve the required durability of reinforced concrete structures of transport structures. The types and causes of corrosion processes in reinforcing steel reinforced concrete structures are described. The compositions and technologies of anticorrosive protection are examined and analyzed. Comparison of the compositions of anticorrosive protection of reinforced concrete structures is carried out according to the following criteria: consumption, density, viability, curing temperature and the number of components of the composition. A comparison of anti-corrosion protection technologies is carried out on the basis of the following indicators: line dimensions, productivity and consumption of energy resources. A comparison is also made of the cost of using various anti-corrosion protection technologies. Based on the data obtained, the advantages and disadvantages of the considered compositions and technologies of corrosion protection are determined. As a result, the most effective and technologically advanced method of corrosion protection of steel reinforcement of reinforced concrete structures of transport structures is selected.

An Experimental Research for Developing Prediction Program for Time to Corrosion Reinforcing Steel

2014 ◽  
Vol 1052 ◽  
pp. 335-345
Author(s):  
Do Gyeum Kim
Keyword(s):  
Prediction Model ◽  
Experimental Research ◽  
Concrete Structure ◽  
Field Investigation ◽  
Prediction System ◽  
Reinforcing Steel ◽  
Coastal Structure ◽  
Reinforcing Bar ◽  
Prediction Program ◽  
Diffusion Speed

This research has attempted to predict the level of corrosion of reinforcing bar depending on diffusion speed of chloride in concrete to develop prediction program for the time in which corrosion of reinforcing bar in concrete structure at coast occurs. Based on the results, diffusion algorithm of chloride has been formulated and corrosion prediction system has been developed by utilizing the prediction model for diffusion of chloride. The results from experiment and field investigation on coastal structure indicate that the developed program can predict diffusion speed of chloride relatively accurately, The majority of estimated values are coincide with experimental value apart from those of the surface regarding prediction on content of chloride according to different depth. Therefore, the newly developed program has been found to be useful for interpreting and predicting diffusion of chloride.

scholarly journals Comparative Study on Corrosion Protection of Reinforcing Steel by Using Amino Alcohol and Lithium Nitrite Inhibitors

Materials ◽  
2015 ◽  
Vol 8 (1) ◽  
pp. 251-269 ◽  
Author(s):  
Han-Seung Lee ◽  
Hwa-Sung Ryu ◽  
Won-Jun Park ◽  
Mohamed Ismail
Keyword(s):  
Comparative Study ◽  
Corrosion Protection ◽  
Amino Alcohol ◽  
Reinforcing Steel

Field Investigation of Corrosion-Protection Performance of Bridge Decks Constructed with Epoxy-Coated Reinforcing Steel in Virginia

1997 ◽  
Vol 1597 (1) ◽  
pp. 82-90 ◽  
Author(s):  
Richard E. Weyers ◽  
Wioleta Pyc ◽  
Jerzy Zemajtis ◽  
Youping Liu ◽  
David Mokarem ◽  
...  
Keyword(s):  
Corrosion Protection ◽  
Bridge Decks ◽  
Diffusion Constant ◽  
Field Investigation ◽  
Work Of Adhesion ◽  
Chloride Diffusion ◽  
Reinforcing Steel ◽  
Physical Damage ◽  
Concrete Core ◽  
Traffic Lane

The corrosion-protection performance of epoxy-coated reinforcing steel (ECR) in three 17-year-old bridge decks in Virginia was assessed. The decks had an upper mat of ECR and a lower mat of bare steel. Surface cracking in the right traffic lane was visually surveyed and 12 cores randomly located in the lowest 12th percentile cover depth in each deck were drilled. The concrete core and the extract ECR were visually inspected. In the concrete moisture content, absorption, percent saturation, carbonation depth, and the effective chloride diffusion constant were measured. In the ECR physical damage, coating thickness, adhesion loss and corrosion at damaged sites, and undercoating corrosion at adhesion test sites were measured. The chloride content of the concrete and carbonation of the ECR trace were determined. Significant coating adhesion loss occurred before the chloride arrived at the bar depth. The debonding of the epoxy is wet debonding, which is predicted by the negative thermodynamic work of adhesion. ECR will extend the service life of only 5 percent of the bridge decks in Virginia. Thus, its use is not cost-effective. Additional decks should be evaluated to confirm the results of this and other studies.

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