Application of Sacrificial Point Anode for Prevention of Steel Corrosion in Cracked Concrete

Caronge, Muhammad Akbar; Hamada, Hiroyuki; Irmawaty, Rita; Sagawa, Yasutaka; Yamamoto, Daisuke

doi:10.3151/jact.13.479

Cited by 6 publications

(1 citation statement)

References 5 publications

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“…Even the sacrificial anodes cathodic protection is considered as the most effective and widely used in controlling chlorideinduced reinforcement corrosion [28,38,39]; however, the sacrificial anodes cathodic protection can lose its effectiveness with time due to the anode consumption during repair period [1]. The anode life is dependent on the average current output that affected by temperature, oxygen content, humidity and chloride content [40]. For the patch repaired concrete, it was reported that the sacrificial zinc anode had a profound effect on polarizing the potential of reinforcement in the substrate concrete and no significant protection in patch repair section [11].…”

Section: Introductionmentioning

confidence: 99%

Effective Use of Sacrificial Zinc Anode as a Suitable Repair Method for Severely Damaged RC Members Due to Chloride Attack

Astuti

Rafdinal²,

Yamamoto

et al. 2022

Civ Eng J

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In many cases, the repair strategy by using sacrificial anodes for cathodic protection in real RC structures requires additional zinc anodes after several years due to the decreasing protective area. This experimental study evaluates the effectiveness of time lag application of sacrificial anode cathodic protection applied to RC beam specimens that deteriorated severely due to chloride attack. In the experiment, sacrificial anodes and cathodic protection (SACP) were applied to 41-year-old RC beam specimens exposed to natural marine environments in which the embedded steel bars were significantly corroded. The repair work was performed in three stages. Instant-off and rest potential tests of steel bars were conducted periodically to demonstrate the time-dependent depolarization value. In the first stage, a polymer-modified mortar as a patch repair material was cast to replace the concrete in the middle tensile part with small sacrificial anodes embedded in the mortar. After the protective current reaches an equilibrium state, the sacrificial anodes are disconnected from the steel bars for a year, defined as the second stage. During the one year in the second stage, the steel bar in the patch repair area remained passive, without any sign of corrosion. As for the third stage, additional sacrificial anodes were installed in the existing concrete part to protect the steel in it. From one year of observation after applying sacrificial anodes to old concrete parts, the time lag SACP application of both in patch and non-patch repair parts was clarified to be effective in stopping the corrosion of steel bar in both parts until 20–30 years based on the service life prediction. Doi: 10.28991/CEJ-2022-08-07-015 Full Text: PDF

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Section: Introductionmentioning

confidence: 99%

Effective Use of Sacrificial Zinc Anode as a Suitable Repair Method for Severely Damaged RC Members Due to Chloride Attack

Astuti

Rafdinal²,

Yamamoto

et al. 2022

Civ Eng J

Self Cite

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Compressive strength and corrosion behavior of steel bars embedded in concrete produced with ferronickel slag aggregate and fly ash: an experimental study

Irmawaty

Caronge

Tjaronge

et al. 2023

Innov. Infrastruct. Solut.

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Effects of vibration time on compressive strength and corrosion resistance of steel bars in concrete

Caronge

Tjaronge

Irmawaty

et al. 2020

IOP Conf. Ser.: Earth Environ. Sci.

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In this paper, In this paper, effects of vibration time (0, 10 and 20 seconds) on compressive strength and corrosion resistance of steel bar in concrete are experimentally investigated. Compressive strength of concrete was performed on cylindrical specimens of Ø100x200 mm with water cement ratio (w/c) 0.52 after 28 days curing in tap water. Cylindrical specimens of Ø100x200 mm having 16 mm diameter of steel bar are considered for corrosion study. The specimens were subjected to cyclic wetting and drying regime up to 15 cycles. In wet cycle the specimens are immersed in sea water for 3 days, while in dry cycle the specimens were placed in open air for 4 days. The corrosion activity is monitored by measuring the copper/copper sulphate (CSE) half-cell potential according to ASTM C-876. The chloride penetration depths of concretes are also measured after 28 days immersed in 10% NaCl solution. Results show that compressive strength, chloride penetration depths and corrosion of steel bars is significantly affected by vibration time.

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Application of Sacrificial Point Anode for Prevention of Steel Corrosion in Cracked Concrete

Cited by 6 publications

References 5 publications

Effective Use of Sacrificial Zinc Anode as a Suitable Repair Method for Severely Damaged RC Members Due to Chloride Attack

Effective Use of Sacrificial Zinc Anode as a Suitable Repair Method for Severely Damaged RC Members Due to Chloride Attack

Compressive strength and corrosion behavior of steel bars embedded in concrete produced with ferronickel slag aggregate and fly ash: an experimental study

Effects of vibration time on compressive strength and corrosion resistance of steel bars in concrete

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