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Open AccessArticle

Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion

Faculty of Civil Engineering and Architecture, Kielce University of Technology, Al. Tysiąclecia Państwa Polskiego 7, 25-314 Kielce, Poland
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Appl. Sci. 2019, 9(18), 3763; https://doi.org/10.3390/app9183763
Received: 14 July 2019 / Revised: 27 July 2019 / Accepted: 31 July 2019 / Published: 9 September 2019
(This article belongs to the Special Issue Fiber-Reinforced Concrete)
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. View Full-Text
Keywords: steel fiber reinforced concrete; shotcrete; reinforcement corrosion; simultaneous action of chlorides and frost; semi non-destructive galvanostatic pulse method; shrinkage measurement; compressive strength test; scanning microscopy; EDS analysis steel fiber reinforced concrete; shotcrete; reinforcement corrosion; simultaneous action of chlorides and frost; semi non-destructive galvanostatic pulse method; shrinkage measurement; compressive strength test; scanning microscopy; EDS analysis
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MDPI and ACS Style

Raczkiewicz, W.; Kossakowski, P.G. Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion. Appl. Sci. 2019, 9, 3763. https://doi.org/10.3390/app9183763

AMA Style

Raczkiewicz W, Kossakowski PG. Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion. Applied Sciences. 2019; 9(18):3763. https://doi.org/10.3390/app9183763

Chicago/Turabian Style

Raczkiewicz, Wioletta; Kossakowski, Paweł G. 2019. "Electrochemical Diagnostics of Sprayed Fiber-Reinforced Concrete Corrosion" Appl. Sci. 9, no. 18: 3763. https://doi.org/10.3390/app9183763

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