Corrosion of Steel Reinforcement in Carbon Fiber-Reinforced Polymer Wrapped Concrete Cylinders

Wootton, Isaac A; Spainhour, Lisa K.; Yazdani, Nur

doi:10.1061/(asce)1090-0268(2003)7:4(339)

Cited by 60 publications

(29 citation statements)

References 7 publications

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“…The quality of the concrete cover with respect to mix design, placement, compaction, depth, sealants, and curing practices will tremendously offset the ingress of deleterious substances. Carbon fiber-reinforced polymer wraps 8 and electrochemical chloride removal systems 9 have been used to protect reinforced concrete in corrosive environments. Protection of the reinforcement by polymer/metallic coatings 10 and/or cathodic protection 11 are also effectively used.…”

Section: Introductionmentioning

confidence: 99%

Estimation of corrosion damage to steel reinforced mortar using frequency sweeps of guided mechanical waves

et al. 2006

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A frequency sweep from 50 to 200 kHz of guided mechanical waves have been conducted to detect and assess corrosion damage in steel reinforced mortar specimens with seeded defects and in specimens undergoing accelerated corrosion using impressed current. The sweep was conducted by invoking primarily the fundamental longitudinal mode of propagation, i.e., the L(0,1) mode. The decay of waveform energy (indicative of attenuation) at different frequencies is presented and discussed in terms of corrosion damage. Experimental results indicate that the percentage of corrosion damage can be detected and evaluated invoking the fundamental longitudinal mode of propagation.

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Section: Introductionmentioning

confidence: 99%

Estimation of corrosion damage to steel reinforced mortar using frequency sweeps of guided mechanical waves

et al. 2006

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“…10,25,[28][29][30][31] These have led to some common knowledge. For example, it has been generally accepted that, apart from the wellknown galvanic corrosion of steels caused by CFRPs, aluminum alloys with good general corrosion resistance, can also suffer from galvanic corrosion if they are coupled with CFRPs.…”

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confidence: 99%

Effect of the Microstructure of Carbon Fiber Reinforced Polymer on Electrochemical Behavior

Zhang

Zheng

Song

et al. 2018

J. Electrochem. Soc.

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Carbon fiber reinforced epoxy and nylon were measured by means of potentiodynamic polarization, potentiostatic polarization and AC electrochemical impedance spectroscopy (EIS) in a solution containing 0.9wt% NaCl, 0.1wt% CaCl 2 and 0.075wt% NaHCO 3 . Their microstructures were examined by SEM. The results showed that these two types of carbon fiber reinforced polymers (CFRPs) were electrically conductive and electrochemically noble, and exhibited different EIS characteristics. Strong anodic and cathodic polarization could damage their surface polymer layers. Based on their different microstructures and electrochemical behaviors, a surface polymer layer model was proposed for these CFRPs. and aerospace 16 industries due to its light weight, high stiffness, high strength, good anti-fatigue performance and excellent corrosion resistance. Many investigators have been attracted to pursue better mechanical properties for different types of CFRPs. [17][18][19][20][21] CFRPs are often used together with other engineering metals, such as steels, Al alloys, Mg alloys and Ti alloys in industry. 14,15,22,23 As carbon has an open-circuit-potential (OCP) more positive than most engineering metals, strong galvanic cells can be formed between CFRPs and these metals in aggressive service environments, 24-27 thus galvanic corrosion of the coupled metals has been always a big concern.In the past decades, many studies have been focused on the galvanic effect of CFRPs on the coupled metals, including the influence of metallurgical and environmental factors on the galvanic corrosion. 10,25,[28][29][30][31] These have led to some common knowledge. For example, it has been generally accepted that, apart from the wellknown galvanic corrosion of steels caused by CFRPs, aluminum alloys with good general corrosion resistance, can also suffer from galvanic corrosion if they are coupled with CFRPs. 24,32 The galvanic corrosion of magnesium alloys coupled with CFRPs is more severe than any other engineering metals.26 Titanium alloys are stable in most aggressive environments and not attacked by galvanic corrosion if they are in contact with CFRPs. 27,33 However, most of these studies simply measured or estimated the corrosion damage of metals. They ignored the detailed electrochemical behavior of the coupled CFRPs. 26,32,34 In fact, the metal in contact with a CFRP may deteriorate more severely due to crevices formed in the joint than that simply caused by galvanic effect. On the other hand, the CFRP in a galvanic couple may also degrade and its electrochemical properties may vary with time while the coupled metal is being corroded, as the corrosion products from the coupled metal may in return affect the electrochemical performance or even accelerate the degradation of the CFRP. This kind of possible degradation of a CFRP in a galvanic couple, as well as the detrimental effect of the CFRP degradation on the galvanic corrosion of a coupled metal, has not been systematically investigated.In fact, CFRP can degrade in a corrosive medium chemical...

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“…The quality of concrete cover, placement, compaction, depth, sealants, and curing practices have tremendously delayed the ingress of deleterious substances. Carbon fibre-reinforcement polymer wraps (Wootton et al 2003) and electrochemical chloride removal systems (Bennett et al 1993) have been used to protect and restore reinforced concrete in marine and corrosive environments. Protection of the reinforcement by polymer/metallic coatings (Sanjurjo et al 1993) and cathodic protection (Broomfield and Tinnear 1992) have also been effectively used.…”

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confidence: 99%

Nondestructive Inspection of Corrosion and Delamination at the Concrete-Steel Reinforcement Interface

Miller

Hauser

Kundu

2002

Nondestructive Evaluation

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This paper explores the feasibility of detecting and quantifying corrosion and delamination at the interface between reinforcing steel bar and concrete using ultrasonic guided waves. The problem of corrosion and delamination of the reinforcing steel in the aging infrastructure has increased significantly in the last three decades and is likely to keep on increasing. Ultrasonic cylindrical guided waves that can propagate a long distance along the reinforcing steel bar are found to be sensitive to the interface conditions between steel bar and concrete. Ultrasonic transducers are used to launch and detect cylindrical guided waves along the steel bar. The traditional ultrasonic testing methods, for instance the pulse-echo method, where reflection, transmission, and scattering of longitudinal waves are used for detecting large voids in concrete, are not very efficient for detecting corrosion and delamination at the interface between concrete and steel bar. For this study four sets of specimens were prepared. They are rebars and plain steel bars with corrosion and physical separation. Transducers used during the experiment are the Electromagnetic Acoustic Transducer (EMAT) and the Piezoelectric Transducer (PZT). The experiment suggests that the guided wave inspection technique is feasible for the health monitoring of reinforced concrete structures. It also reveals that the ultrasonic guided waves are sensitive to the type of steel used and to the rib patterns on the reformed steel bars.

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Corrosion of Steel Reinforcement in Carbon Fiber-Reinforced Polymer Wrapped Concrete Cylinders

Cited by 60 publications

References 7 publications

Estimation of corrosion damage to steel reinforced mortar using frequency sweeps of guided mechanical waves

Estimation of corrosion damage to steel reinforced mortar using frequency sweeps of guided mechanical waves

Effect of the Microstructure of Carbon Fiber Reinforced Polymer on Electrochemical Behavior

Nondestructive Inspection of Corrosion and Delamination at the Concrete-Steel Reinforcement Interface

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