Empirical assessment and refinement of corrosion distribution models in the perimeter of corroded steel rebar subjected to chloride ions attack

Soltani, Arash; Nasserasadi, Kiarash; Ahmadi, Jamal; Tafakori, Ehsan

doi:10.1016/j.cscm.2022.e01398

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…The model can incorporate the nonlinear behavior of the steel and concrete and account for the intricate geometries within the composite. The model can measure interfacial strains and stresses by installing fiber-optic cables at the steel-concrete interface, which facilitates direct measurement of the bond-slip behavior [164]. The results from the meso-scale model can shed light on the behavior of the steel-concrete composite under different loading conditions and improve the design and performance of steel-concrete structures.…”

Section: Analytical Model Of Embedded Corroded Steel Barmentioning

confidence: 99%

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Shilar,

Ganachari,

Patil

et al. 2024

Materials

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Structural health monitoring (SHM) is crucial for maintaining concrete infrastructure. The data collected by these sensors are processed and analyzed using various analysis tools under different loadings and exposure to external conditions. Sensor-based investigation on concrete has been carried out for technologies used for designing structural health monitoring sensors. A Sensor-Infused Structural Analysis such as interfacial bond-slip model, corroded steel bar, fiber-optic sensors, carbon black and polypropylene fiber, concrete cracks, concrete carbonation, strain transfer model, and vibrational-based monitor. The compressive strength (CS) and split tensile strength (STS) values of the analyzed material fall within a range from 26 to 36 MPa and from 2 to 3 MPa, respectively. The material being studied has a range of flexural strength (FS) and density values that fall between 4.5 and 7 MPa and between 2250 and 2550 kg/m3. The average squared difference between the predicted and actual compressive strength values was found to be 4.405. With cement ratios of 0.3, 0.4, and 0.5, the shear strength value ranged from 4.4 to 5.6 MPa. The maximum shear strength was observed for a water–cement ratio of 0.4, with 5.5 MPa, followed by a water–cement ratio of 0.3, with 5 MPa. Optimizing the water–cement ratio achieves robust concrete (at 0.50), while a lower ratio may hinder strength (at 0.30). PZT sensors and stress-wave measurements aid in the precise structural monitoring, enhanced by steel fibers and carbon black, for improved sensitivity and mechanical properties. These findings incorporate a wide range of applications, including crack detection; strain and deformation analysis; and monitoring of temperature, moisture, and corrosion. This review pioneers sensor technology for concrete monitoring (Goal 9), urban safety (Goal 11), climate resilience (Goal 13), coastal preservation (Goal 14), and habitat protection (Goal 15) of the United Nations’ Sustainable Development Goals.

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Section: Analytical Model Of Embedded Corroded Steel Barmentioning

confidence: 99%

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Shilar,

Ganachari,

Patil

et al. 2024

Materials

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“…Unlike carbonation, chloride ion attack does not neutralize the passive layer. Chloride ions act as catalysts, remaining present and attacking the reinforcement surface [32]. Chloride ions disturb the passive layer surrounding embedded steel reinforcement, reacting with ferrous ions at the anode to form a soluble compound that oxidizes into insoluble iron hydroxide at the cathode, producing chloride ions.…”

Section: Chloride Ions Attackmentioning

confidence: 99%

Behavior and Performance of Reinforced Concrete Columns Subjected to Accelerated Corrosion

Hameed

Afzal

Javed

et al. 2023

Metals

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Steel reinforcement corrosion in concrete structures such as bridges, industrial plants, marine structures, and coastal buildings is a growing concern due to its impact on cost, safety, and serviceability. Corrosion leads to spalling, cracking, and reduced reinforcement diameter, which can compromise structural integrity. This study examines the behavior of concrete columns with corroded reinforcement in two phases. In the first phase, 72 columns of 150 × 150 mm cross-sectional dimensions and 300 mm length were cast and subjected to an accelerated corrosion technique. The study examined variables such as concrete cover, concrete strength, and corrosion exposure. The second phase involved studying the axial behavior of corroded columns concerning the effect of column length. Column specimens of 150 × 150 mm cross-sectional dimensions and lengths of 500 mm, 700 mm, and 900 mm were cast, corroded, and tested under axial compressive load. The study revealed that a 30 mm concrete cover offers 10% more protection against corrosion than a 20 mm cover. Continuous exposure to a corrosive environment reduces the load-carrying capacity by 50%, while columns with 28 MPa concrete strength can carry 4% more load. Longer columns are more susceptible to corrosion, leading to a significant reduction in load-carrying capacity and concrete cover damage. Therefore, maintaining adequate concrete cover, strength, and regular inspections are essential to address steel reinforcement corrosion and preserve structural integrity.

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Empirical assessment and refinement of corrosion distribution models in the perimeter of corroded steel rebar subjected to chloride ions attack

Cited by 2 publications

References 31 publications

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Exploring the Potential of Promising Sensor Technologies for Concrete Structural Health Monitoring

Behavior and Performance of Reinforced Concrete Columns Subjected to Accelerated Corrosion

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