Chloride-Induced Corrosion of Steel Bars in Concrete with Presence of Gap at Steel-Concrete Interface

2002 ◽  
Vol 99 (2) ◽  
Keyword(s):  
Chloride Induced Corrosion ◽  
Steel Bars ◽  
Corrosion Of Steel ◽  
Concrete Interface

Characteristics of the steel-concrete interface and their effect on the corrosion of steel bars in concrete

2020 ◽  
Vol 253 ◽  
pp. 119162 ◽  
Author(s):  
Yuxin Cai ◽  
Wulong Zhang ◽  
Linwen Yu ◽  
Mengzhu Chen ◽  
Changhui Yang ◽  
...  
Keyword(s):  
Steel Bars ◽  
Corrosion Of Steel ◽  
Concrete Interface

scholarly journals Protection of Steel Corrosion in Concrete Members by the Combination of Galvanic Anode and Nitrite Penetration

2014 ◽  
Vol 2014 ◽  
pp. 1-11 ◽  
Author(s):  
Minobu Aoyama ◽  
Shinichi Miyazato ◽  
Mitsunori Kawamura
Keyword(s):  
Basic Concept ◽  
Steel Corrosion ◽  
Reinforced Concrete Structures ◽  
Near Surface ◽  
Concrete Members ◽  
Chloride Induced Corrosion ◽  
Protection Method ◽  
Steel Bars ◽  
Corrosion Of Steel ◽  
Galvanic Anode

Chloride induced-corrosion of steel bars in concrete can make cracks and exfoliation in near-surface regions in reinforced concrete structures. In this paper, we described the basic concept and practice of steel bars corrosion protection method by the combination of galvanic anode (zinc wire) and the penetration of nitrite ions from mortar layers containing a large amount of lithium nitrite.

scholarly journals Corrosion of Steel Bars in Concrete with the Variation of Microstructure of Steel-Concrete Interface

2015 ◽  
Vol 13 (4) ◽  
pp. 230-240 ◽  
Author(s):  
Tarek Uddin Mohammed ◽  
Hidenori Hamada ◽  
Ariful Hasnat ◽  
Mohammed Abdullah Al Mamun
Keyword(s):  
Steel Bars ◽  
Corrosion Of Steel ◽  
Concrete Interface

scholarly journals Relationship model between surface strain of concrete and expansion force of reinforcement rust

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Fanxiu Chen ◽  
Zuquan Jin ◽  
Endong Wang ◽  
Lanqin Wang ◽  
Yudan Jiang ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Real Time ◽  
Steel Corrosion ◽  
Surface Strain ◽  
Concrete Cracking ◽  
Whole Process ◽  
Steel Bars ◽  
Relationship Model ◽  
Expansion Force ◽  
Corrosion Of Steel

AbstractConcrete cracking caused by corrosion of reinforcement could significantly shorten the durability of reinforced concrete structure. It remains critical to investigate the process and mechanism of the corrosion occurring to concrete reinforcement and establish the theoretical prediction model of concrete expansion force for the whole process of corrosion cracking of reinforcement. Under the premise of uniform corrosion of reinforcing steel bars, the elastic mechanics analysis method is adopted to analyze the entire process starting from the corrosion of steel bars to the cracking of concrete due to corrosion. A relationship model between the expansion force of corrosion of steel bars and the surface strain of concrete is established. On the cuboid reinforced concrete specimens with square cross-sections, accelerated corrosion tests are carried out to calibrate and verify the established model. The model can be able to estimate the real-time expansion force of reinforced concrete at any time of the whole process from the initiation of steel corrosion to the end of concrete cracking by measuring the surface strain of concrete. It could be useful for quantitative real-time monitoring of steel corrosion in concrete structures.

Characterisation of the steel concrete interface submitted to chloride-induced-corrosion

2012 ◽  
Vol 64 (3) ◽  
pp. 185-194 ◽  
Author(s):  
V. L'Hostis ◽  
E. Amblard ◽  
W. Guillot ◽  
C. Paris ◽  
L. Bellot-Gurlet
Keyword(s):  
Chloride Induced Corrosion ◽  
Concrete Interface

Test and Study on Impact of Corrosion on Bond Force between Steel and Concrete

2010 ◽  
Vol 36 ◽  
pp. 176-181
Author(s):  
Xian Feng He ◽  
Shou Gang Zhao ◽  
Yuan Bao Leng
Keyword(s):  
Reinforced Concrete ◽  
Corrosion Rate ◽  
Concrete Structure ◽  
Steel Corrosion ◽  
Reinforced Concrete Structure ◽  
Bond Force ◽  
Steel Bars ◽  
Protection Layer ◽  
Corrosion Of Steel ◽  
The Impact

The corrosion of steel will have a bad impact on the safety of reinforced concrete structure. In severe cases, it may even be disastrous. In order to understand the impact of steel corrosion on the structure, tests are carried out to study corrosion and expansion rules of steel bars as well as the impact rules of corrosion on bond force between steel and concrete. The results show that wet and salty environment will result in steel corrosion; relatively minor corrosion will not cause expansion cracks of protection layers; when steel rust to a certain extent, it will cause cracks along the protection layer; when there exists minor corrosion in steel and the protection layer does not have expansion cracks, the bond force is still large and rapidly decreases as the corrosion rate increases.

Experiment Study on Degradation Laws of Sulfuric Acid Corrosion Reinforcements

2018 ◽  
Vol 878 ◽  
pp. 23-27 ◽  
Author(s):  
Ming Qiang Lin ◽  
Feng Juan Dai ◽  
Jia Tao Li
Keyword(s):  
Sulfuric Acid ◽  
Acid Corrosion ◽  
Constitutive Models ◽  
Corrosion Damage ◽  
Uniform Corrosion ◽  
Steel Bars ◽  
Relationship Model ◽  
Strain Relationship ◽  
Sulfuric Acid Corrosion ◽  
Corrosion Of Steel

The corrosion of concrete structures is serious in sulfuric acid environments. Corrosion damage of reinforcements caused sulfuric acid corrosion is very serious. The rapid experiments of sulfuric acid corrosion steel bars were carried out, and the apparent morphology and mechanical properties of sulfuric acid corrosion steel bars were studied. The results show that the corrosion of steel bars is uniform corrosion. With the increase of corrosion rate, the yield platforms and the yield strengths and ultimate strengths are reduced. Based on the experimental datas, the relationship models between yield strengths and ultimate strengths and corrosion rates were obtained. The constitutive models of corrosion steel bars were established. The stress - strain relationship model is in good agreement with the experimental data.

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