The Performance of Carbon Fibre Composites as ICCP Anodes for Reinforced Concrete Structures

Chau, N.; Lambert, Paul; Mangat, P. S.; O'Flaherty, Fin; Jones, G. B.

doi:10.5402/2012/814923

Cited by 25 publications

(19 citation statements)

References 8 publications

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“…In the Pourbaix diagrams, the pH value at the contact surface between solution and carbon is considered as influencing factor of the carbon's stability. However, it does not take the process of acidification at the anode's surface into account, which is a general and commonly reported issue leading to locally strongly acidic conditions.…”

Section: Introductionmentioning

confidence: 99%

Durability behavior of polymer impregnated carbon textiles in alkaline solution as CP anode

Asgharzadeh

Raupach

2018

Materials & Corrosion

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Cathodic corrosion protection (CP) is a cost‐effective option for maintenance of concrete structures. CP is an electrochemical method that can be used to reduce the corrosion rate to an acceptable level. Thus, service life of reinforced concrete can be increased considerably. In this work, carbon textiles with varying polymer impregnations, cross sections, and mesh widths have been used as CP anodes and have been tested for their durability. The main goal of this research is to determine the behavior of carbon textile under permanent anodic polarization while stored in saturated calcium hydroxide solution. The outcome will serve as a basis for further investigations in which textiles will be permanently polarized and tested after embedding in mortar.

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Section: Introductionmentioning

confidence: 99%

Durability behavior of polymer impregnated carbon textiles in alkaline solution as CP anode

Asgharzadeh

Raupach

2018

Materials & Corrosion

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“…Gadve et al [22,23] reported the test results of reinforced concrete lollipop specimens and beams with CFRP serving as an impressed current anode. Van Nguyen et al [24] studied the performance of CFRP fabric and rod as impressed current anodes in calcium solution and concrete. In addition, CFRP was employed to pre-corroded reinforced concrete beams for both structural strengthening and ICCP, and the results showed that the ultimate strength of specimens with CFRP for dual functions (structural strengthening and ICCP) decreased slightly in comparison to control specimens only for structural strengthening [25,26].…”

Section: Introductionmentioning

confidence: 99%

Electrical and Mechanical Performance of Carbon Fiber-Reinforced Polymer Used as the Impressed Current Anode Material

Zhu

Han

et al. 2014

Materials

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An investigation was performed by using carbon fiber-reinforced polymer (CFRP) as the anode material in the impressed current cathodic protection (ICCP) system of steel reinforced concrete structures. The service life and performance of CFRP were investigated in simulated ICCP systems with various configurations. Constant current densities were maintained during the tests. No significant degradation in electrical and mechanical properties was found for CFRP subjected to anodic polarization with the selected applied current densities. The service life of the CFRP-based ICCP system was discussed based on the practical reinforced concrete structure layout.

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“…Attempts have been made to combine these two functions together, which have demonstrated the successful application of CFRP as anode material for ICCP . The CFRP anode can operate at 128 mA/m 2 with a relatively low consumption rate, and the ultimate strength of concrete increases approximately 13.5% using surface‐mounted CFRP fabric . The degradation mechanism of a CFRP anode has been investigated in simulated solutions and a concrete environment …”

Section: Introductionmentioning

confidence: 99%

Effect of the paste–anode interface under impressed current cathodic protection in concrete structures

Zhang

Tang

Bernin³

et al. 2018

Materials & Corrosion

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Impressed current cathodic protection (ICCP) is a powerful method to prevent and stop corrosion of steel in concrete structures. To evaluate the long‐term effect of ICCP, accelerated tests have been adopted using high current densities. A carbon fiber reinforced polymer mesh was introduced as anode. The presented research focused on the changes at the paste–anode interface as a consequence of applying current. The treated samples were characterized by various techniques. Calcium dissolution was found with an average thickness of 0.34 mm around the anode after charges of 6 × 106 C/m2 were applied, equivalent to applying 4 mA/m2 of anode surface for 30 years. Calcium dissolution resulted in a white zone around the anode, where the calcium silica ratio was lowered and almost no crystal phase was observed. NMR results show clear Q3 and Q4 peaks in the white zone, which contained extended branched and networked structures of hardened cement paste. An increased resistance caused by the formation of the white zone may eventually make the system fail because of insufficient current densities. CFRP has been proven suitable for ICCP application even at a current density of 4 A/m2 of anode surface.

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The Performance of Carbon Fibre Composites as ICCP Anodes for Reinforced Concrete Structures

Cited by 25 publications

References 8 publications

Durability behavior of polymer impregnated carbon textiles in alkaline solution as CP anode

Durability behavior of polymer impregnated carbon textiles in alkaline solution as CP anode

Electrical and Mechanical Performance of Carbon Fiber-Reinforced Polymer Used as the Impressed Current Anode Material

Effect of the paste–anode interface under impressed current cathodic protection in concrete structures

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