Tidal Water Effect on the Hybrid Cathodic Protection Systems for Marine Concrete Structures

Jeong, Jin-A; Jin, Chungkuk; Chung, Wonsub

doi:10.3151/jact.10.389

Cited by 22 publications

(9 citation statements)

References 8 publications

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“…The potential difference between the instant-off potential and the potential measured at the 4 h after switching off the CP current is called the 4-h potential decay which is another important parameter used to evaluate the effectiveness of CP operation [40, 41]. Generally, 100 mV depolarization in a 4 h period of time is the most accepted criterion.…”

Section: Resultsmentioning

confidence: 99%

An experimental study of cathodic protection for chloride contaminated reinforced concrete

et al. 2018

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Cathodic protection (CP) is being increasingly used on reinforced concrete structures to protect steel reinforcing bars from corrosion in aggressive conditions. Due to the complexity of environmental conditions, the design specifications in national and international standards are still open to discussion to achieve both sufficient and efficient protection for reinforced concrete structures in engineering practices. This paper reports an experimental research to investigate the influence of chloride content on concrete resistivity, rebar corrosion rate and the performance of CP operation using different current densities. It aims to understand the correlation between the chloride content and concrete resistivity together with the CP current requirement, and to investigate the precision of the CP design criteria in standards.

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Section: Resultsmentioning

confidence: 99%

An experimental study of cathodic protection for chloride contaminated reinforced concrete

et al. 2018

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“…A possible function of the mortar containing the dried waste was to be the specie for brick and another non-structural. The use of another cementitious material is also proposed in order to get the better performance to be the patch repair material, especially for patch repair material that combined with the cathodic corrosion protection in deteriorated concrete [55,56,57,58].…”

Section: The Most Suitable MIX Proportion For Patch Repairmentioning

confidence: 99%

Engineering properties of seawater-mixed mortar with batching plant residual waste as aggregate replacement

Astuti,

Pramana,

Rafdinal

et al. 2024

Sinergi

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This research showcased the use of leftover trash as a substitute for aggregate in mortar combined with saltwater. The raw waste materials underwent analysis using X-ray fluorescence (XRF) in order to determine the component materials and crystalline phases present. The choice of Portland composite cement (PCC) was made because of its durability in a hostile environment. Seawater is used to combat the water crisis and prevent corrosion, thanks to its exceptional resistance to corrosion. The attributes of mortar were assessed in terms of its fresh characteristics (slump and flow table) as well as its mechanical properties (compressive strength, split tensile strength, flexural strength, density, and shrinkage). The findings indicate that the dried mortar waste is suitable as a patch repair material for a substrate with a strength of 20 MPa, but only when utilized in a maximum quantity of 20% and with a water-to-cement ratio of 0.3. The repaired concrete with a strength of 25 MPa did not need any waste containment and had a maximum water-to-cement ratio (W/C) of 0.3, whether combined with saltwater or tap water. The possible role of the mortar containing the dried waste was to be the species for brick and other non-structural. Additionally, the use of an alternative cementitious substance is suggested to enhance the effectiveness of the patch repair material, particularly when paired with cathodic corrosion protection in damaged concrete

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“…Because the throwing power is only a few centimeters, depending on the surrounding conditions, the workability of the SACP system in marine tidal and splash zones is limited [19][20][21]. To address the inherent limitations of SACP, a hybrid CP system that integrates ICCP and SACP was developed [22,23]; however, this approach introduces challenges to practicality, as it increases the system complexity and may lead to interference between the two CP systems.…”

Section: Introductionmentioning

confidence: 99%

Development of Conductive Mortar for Efficient Sacrificial Anode Cathodic Protection of Reinforced Concrete Structures—Part 2: Four-Year Performance Evaluation in Bridges

Ha,

Jeong,

Jin

2024

Applied Sciences

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This study explores the efficacy of a sacrificial anode cathodic protection (SACP) system with an activated carbon-based conductive mortar in bridge structures. In the previous Part 1 study, various admixtures were compared to identify a conductive mortar for enhancing the performance of the SACP system, assessed through electrical conductivity, resistivity, cathodic protection (CP) potential and current, and 4 h depolarization potential. Part 2 extends the investigation by applying the developed conductive mortar containing activated carbon to an SACP system on an actual bridge structure in which corrosion has already been initiated. Before CP installation, the physical properties of the conductive mortar were evaluated to satisfy the standard requirements for concrete structure maintenance. Subsequently, zinc mesh and bulk anodes were installed on the bridge pier, followed by the application of a conductive mortar with an admixture ratio of 5%. Over a four-year period, performance was measured through regular 4 h depolarization potential checks and visual inspections. The SACP system with the conductive mortar demonstrated superior CP performance compared to the general mortar, confirming the effectiveness of the developed conductive mortar. Visual inspection after four years confirmed the workability of the SACP system with conductive mortar.

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Tidal Water Effect on the Hybrid Cathodic Protection Systems for Marine Concrete Structures

Cited by 22 publications

References 8 publications

An experimental study of cathodic protection for chloride contaminated reinforced concrete

An experimental study of cathodic protection for chloride contaminated reinforced concrete

Engineering properties of seawater-mixed mortar with batching plant residual waste as aggregate replacement

Development of Conductive Mortar for Efficient Sacrificial Anode Cathodic Protection of Reinforced Concrete Structures—Part 2: Four-Year Performance Evaluation in Bridges

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