scholarly journals ASSESSMENT OF THE CURRENT STATE OF THE CONCRETE STRUCTURE OF THE TRIBUNE

2020 ◽  
Vol 12 (2) ◽  
pp. 72-76
Author(s):  
MIROSLAV BRODŇAN ◽  
PETER KOTEŠ
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Reinforced Concrete Structure ◽  
Complex State ◽  
Load Bearing ◽  
Current State ◽  
Concrete Elements ◽  
Non Destructive ◽  
Destructive Methods

The paper is focused on diagnostics of reinforced concrete structure of the tribune of Závodisko Bratislava. The structure was realized by a combination of monolithic and prefabricated concrete elements as well as steel load-bearing elements. The complex state of the rough construction was evaluated, including the verification survey of the foundation of the construction. Non-destructive and destructive methods were used. Based on the results of the diagnostics and recalculation, it was decided to further progress the finish of the tribune.

Using Non-Destructive Methods for the Characterization of Concrete in Aggressive Environments

2015 ◽  
Vol 15 ◽  
pp. 62-70
Author(s):  
Khial Nassima ◽  
Rachid Mehaddene
Keyword(s):  
Reinforced Concrete ◽  
Financial Impact ◽  
Cement Matrix ◽  
Ion Concentrations ◽  
Time Required ◽  
Concrete Elements ◽  
Non Destructive ◽  
Destructive Methods

The durability of reinforced concrete structures is reduced by the chloride penetration and susceptibility of the reinforcement to chloride induced corrosion which is considered a critical physic-chemical case. As the financial impact of the phenomena is very important, it seems essential to determine it influence on strength of reinforced concrete elements subjected to aggressive environnement such us the presence of chlorides when exposed to marine environnement. As such, the determination of the ion concentrations of chlorides profile within the cement matrix is of major importance, it tool to estimate the time required by the chlorides to reach the reinforcements in sufficient quantity to depassivate the steel.

scholarly journals A Review On Non-Destructive Test And Retrofitting

2020 ◽  
pp. 551-557
Author(s):  
Akshay K. Doble ◽  
Prashant Y. Pawade ◽  
Rashmi Bharatey
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Early Stage ◽  
Concrete Structures ◽  
Present Situation ◽  
Reinforced Concrete Structure ◽  
Crushing Strength ◽  
Destructive Test ◽  
Non Destructive

Deterioration of Reinforced Concrete Structure made an alarming situation for researchers and students for specializing in the sturdiness affecting parameters along side crushing strength, various uncontrollable parameters like environmental or exposure situations are equally important for the service existence of structures. Rusting of reinforcement in strengthened concrete diminishes the provider existence and exacerbates concrete structures causing early stage failure of structures. Therefore, assessing present situation of reinforced concrete structure is essential for planning, repairing and replacing of structure.

Non-Destructive Inspection Method and Application Research of Steel Corrosion in Concrete Structures

2013 ◽  
Vol 438-439 ◽  
pp. 497-500 ◽  
Author(s):  
Xiao Na Zhang ◽  
Ming Xiao Jia
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structure ◽  
Concrete Structures ◽  
Steel Corrosion ◽  
Reinforced Concrete Structure ◽  
Application Research ◽  
Inspection Method ◽  
Existing Structures ◽  
Non Destructive ◽  
Physical Quantities

In the reinforced concrete structure, steel corrosion is a major factor affecting the durability of existing structures, it is necessary to explore the extent of steel corrosion in order to take the necessary measures. Based on non-damaged concrete components or structures, by measuring the performance of concrete-related physical quantities, non-destructive inspection could presume strength, compactness, uniformity and defects of concrete components or structure. Combined with engineering example, non-destructive inspection technique and its application in the degree of steel corrosions inspection have great prospects through further validation.

The Study for Non-Destructive Quantification Method of Reinforcement Corrosion Degree Based on Electrochemical Detection and Finite Analysis Technology

2014 ◽  
Vol 527 ◽  
pp. 31-36 ◽  
Author(s):  
Ding Zeng ◽  
Bao Hong Hao ◽  
Qi Hui Zeng
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Electrochemical Detection ◽  
Concrete Structure ◽  
Reinforcement Corrosion ◽  
Reinforced Concrete Structure ◽  
Element Analysis ◽  
Quantitative Calculation ◽  
Non Destructive

Corrosion of reinforcement is one of the most important factors in causing the damage to reinforced concrete structure and the inestimable economic loss and major security risk to a large number buildings with reinforced concrete structure. In order to overcome the disadvantage of previous service reinforcement which can only be carried out by sizing detection not quantification, this paper puts forward to a new method to evaluate non-destructive quantification of corrosion degree of reinforcement based on the combination of electrochemical detection and finite element analysis, thus the effective corresponding can be produced among reinforcement corrosion rate, potential signal and reinforced concrete structural distortion. The relation among corrosion current density and potential characteristic parameters as well as corrosion ratio has been established. Through the finite element analysis technique and the combination with the case analysis, the relation model between the strain rate of concrete beams and detection signal has been built; the forecasted empirical formula for change of strain value of tested reinforcement has been given And by means of verifying the reliability of model with data of previous experiments, the quantitative calculation of reinforcement corrosion degree has been realized, which lays the technical foundation for the research and development of non-destructive detection equipment of corrosion of reinforcement.

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.

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