Using non-destructive methods for measurement of reinforcement corrosion in practice

Brodňan, Miroslav; Koteš, Peter; Bahleda, František; Šebök, Milan; Kučera, Matej; Kubissa, Wojciech

doi:10.15199/40.2017.3.1

Cited by 6 publications

(7 citation statements)

References 7 publications

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“…The available methods of reinforcement corrosion diagnostics for structures in use include electrochemical tests [38][39][40][41][42]. One such method is the semi-nondestructive method of measuring polarization resistance with the use of a galvanostatic pulse [43].…”

Section: Diagnostic Methods For Assessing the Degree Of Reinforcementmentioning

confidence: 99%

Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion

Raczkiewicz

Kossakowski

2019

Applied Sciences

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Sprayed fiber-reinforced concrete is used in construction for the execution and repair of reinforced concrete elements. It is believed that the addition of steel fibers is most effective, due to their parameters and low costs. Some researchers, however, suggest that the addition of steel fibers can contribute to the initiation of corrosion of the main reinforcement. In consideration of the differences of opinion on the corrosion resistance of sprayed fiber-reinforced concrete, it has become necessary to analyze this issue. The article presents comparative studies of corrosion assessments of the main reinforcement in specimens made of ordinary concrete and concrete with steel fibers. The tests were performed using a semi non-destructive galvanostatic pulse method, which allows location of the areas of corrosion and estimation of the reinforcement corrosion activity. In order to initiate the corrosion processes the specimens were subjected to freezing cycles in NaCl solution. In addition, the shrinkage and compressive strength of specimens were measured, and the observation of specimen structure under a scanning microscope was performed. It was found that galvanostatic pulse method allowed estimation of the reinforcement corrosion progress. The corrosion of the main reinforcement in steel fiber reinforced concrete specimens was less advanced than in the specimens without fibers.

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Section: Diagnostic Methods For Assessing the Degree Of Reinforcementmentioning

confidence: 99%

Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion

Raczkiewicz

Kossakowski

2019

Applied Sciences

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“…They make it possible to determine areas exposed to corrosion on the surface of elements as well as the degree of reinforcement corrosion advancement and to forecast its progression over time [ 10 , 11 , 16 ]. These tests are performed using specialised devices that allow the measurement of appropriate electrical quantities, the values of which indicate the course of the corrosion process on the reinforcement [ 1 , 10 , 14 ]. Currently, the most commonly used methods are mainly the potentiometric method, half–cell potentials (measurement of stationary potential and its gradient) [ 59 ], the polarisation method—measurement of corrosion current density [ 60 , 61 , 62 , 63 ]—and the resistance method [ 14 ] (concrete resistance—measurement of concrete cover resistivity).…”

Section: Methodsmentioning

confidence: 99%

“…These tests are performed using specialised devices that allow the measurement of appropriate electrical quantities, the values of which indicate the course of the corrosion process on the reinforcement [ 1 , 10 , 14 ]. Currently, the most commonly used methods are mainly the potentiometric method, half–cell potentials (measurement of stationary potential and its gradient) [ 59 ], the polarisation method—measurement of corrosion current density [ 60 , 61 , 62 , 63 ]—and the resistance method [ 14 ] (concrete resistance—measurement of concrete cover resistivity). Currently, in the available literature, the most frequently described research is conducted using the half-cell potential method, although the experience of the authors and other researchers shows that this method is less reliable than the polarisation method (e.g., galvanostatic pulse method).…”

Section: Methodsmentioning

confidence: 99%

“…However, not only should a well-prepared program of diagnostic tests account for an assessment of the existing condition, it should also provide a forecast for the durability of the structure in the future. This applies in particular to load-bearing structures operated in unfavourable environmental conditions, in which the design assumptions for ensuring adequate durability were incorrect [ 1 , 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 ]. In the article [ 16 ], the authors pay special attention to the chemical tests of the material taken from the structure (usually small samples of the material obtained while performing semi-destructive tests), which allows assessment of the chemical condition of the elements in the context of protection against corrosion during its future operation.…”

Section: Introductionmentioning

confidence: 99%

“…In the case of reinforced concrete structures, diagnostic tests primarily concern the assessment of the state of reinforcement and the concrete cover, which directly determines the durability of the structure [1,10,[13][14][15][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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Diagnostics of Concrete and Steel in Elements of an Historic Reinforced Concrete Structure

et al. 2021

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Existing buildings, especially historical buildings, require periodic or situational diagnostic tests. If a building is in use, advanced non-destructive or semi-destructive methods should be used. In the diagnosis of reinforced concrete structures, tests allowing to assess the condition of the reinforcement and concrete cover are particularly important. The article presents non-destructive and semi-destructive research methods that are used for such tests, as well as the results of tests performed for selected elements of a historic water tower structure. The assessment of the corrosion risk of the reinforcement was carried out with the use of a semi-destructive galvanostatic pulse method. The protective properties of the concrete cover were checked by the carbonation test and the phase analysis of the concrete. X-ray diffractometry and thermal analysis methods were used for this. In order to determine the position of the reinforcement and to estimate the concrete cover thickness distribution, a ferromagnetic detection system was used. The comprehensive application of several test methods allowed mutual verification of the results and the drawing of reliable conclusions. The results indicated a very poor state of the reinforcement, loss in the depth of cover and sulphate corrosion.

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Influence of fiber length on load-bearing capacity of strengthened cross-section using fiber reinforced concrete

Vavruš

2021

Transportation Research Procedia

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Using non-destructive methods for measurement of reinforcement corrosion in practice

Cited by 6 publications

References 7 publications

Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion

Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion

Diagnostics of Concrete and Steel in Elements of an Historic Reinforced Concrete Structure

Influence of fiber length on load-bearing capacity of strengthened cross-section using fiber reinforced concrete

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