Laboratory Simulation of Corrosion Damage in Reinforced Concrete

Altoubat, Salah; Maalej, Mohamed; Shaikh, Faiz Uddin Ahmed

doi:10.1007/s40069-016-0138-7

Cited by 35 publications

(17 citation statements)

References 13 publications

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“…When comparing the required duration for a visible first surface crack for partially immersed columns and columns with wetting and drying cycles only, the former required less duration. Likewise, the impressed current density effect on the first crack of the corroded columns, the higher density the sorter in the duration of the appearing the first crack, for instance at wetting and drying cycles only, the duration of the first crack were ( no crack, 36, 76 days ) for columns (Col.1, Col.2,and Col.3) respectively , this trend was observed by researchers [22]and [23].…”

Section: Visible First Surface Cracksupporting

confidence: 58%

Experimental Comparability Among Different Accelerated Reinforced Steel Concrete Corrosion Methods

Radhi¹,

Hassan²,

Gorgis³

2018

IJET

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The objective of this paper is to inspect the effect of changing the density of the impressed current and wetting-drying condition on accelerated corrosion of reinforced concrete specimens by a galvanostatic method. Small-scale reinforced concrete columns were prepared and then artificially corroded by different setups of accelerated corrosion under an impressed current and also under different wetting-drying cycles for comparison. The density of the impressed current ranged between 50 and 500 µA/cm2 with different wetting-drying cycles periods. Corrosion current, and cracking were monitored throughout the accelerated corrosion period to determine the level of damage caused by the development of expansive reinforcement steel corrosion products, appearance of the first crack, and pattern of cracking.The results indicated that the galvanostatic method with wetting-drying sequences can be utilized effectively to simulate the normal corrosion of steel reinforcement in the concrete structure. The usage of different intensities of the current has no influence on the crack pattern. Though, increasing the current level leads to a substantial increase in the crack width due to corrosion of the steel reinforcement in a shorter time.

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Section: Visible First Surface Cracksupporting

confidence: 58%

Experimental Comparability Among Different Accelerated Reinforced Steel Concrete Corrosion Methods

Radhi¹,

Hassan²,

Gorgis³

2018

IJET

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“…But the deterioration and collapse of reinforced concrete structure are a major issue in construction field [1][2][3]. CO 2 from the air and chloride ions from the sea atmosphere enter into the concrete and make the concrete interstitial solution more aggressive than before [4][5][6][7][8]. Depassivation of the steel reinforcement occurs locally in the presence of chloride ions leading to pitting corrosion [9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Prevention of Reinforcement Corrosion in Concrete by Sodium Lauryl Sulphate: Electrochemical and Gravimetric Investigations

Paulson

Joby

Raphael

et al. 2018

International Journal of Corrosion

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Prolonged corrosion inhibition response of sodium lauryl sulphate (SLS) on steel reinforcement in contaminated concrete was investigated by gravimetric method and electrochemical techniques such as potentiodynamic polarization and electrochemical impedance spectroscopy. Using half cell potential measurements probability of steel reinforcement corrosion was monitored for a period of 480 days. FT-IR spectroscopic analysis of the corroded products deposited on the steel reinforcement revealed the mechanism of corrosion inhibition. Modification in the surface morphology of steel specimens in the concrete was examined by optical microscopy. During the period of investigation (480 days), SLS showed appreciable corrosion inhibition efficiency on the steel reinforcement in concrete.

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“…Both the ultimate strength and stiffness of the reinforced columns were decreased as the level of corrosion damage increase. Likewise, Altoubat et al [8] present a research to laboratory to simulate the effect of the corrosion on the reinforced concrete circular columns. Small scale reinforced concrete columns were fabricated, corroded and tested under uniaxial compression.…”

Section: Introductionmentioning

confidence: 99%

Compressive Performance of Corroded Reinforced Concrete Columns

Radhi¹,

Hassan²,

Gorgis³

2020

ETJ

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Corrosion of reinforcement has been identified as the deterioration mechanism of reinforced concrete structures, which seriously affects the safety and integrity of structures. The corrosion of the embedded reinforcing steel in concrete is a major problem facing civil engineers today, which initiates 80% of the reinforced concrete structures deterioration. This paper reveals the outcomes of an experimental investigation on the mechanical performance (residual strength) of circular steel reinforced columns which have been damaged by corrosion of the steel rebar. Small scale circular reinforced concrete columns with a diameter of 100 mm and 300 mm in height were adopted. Different rates of steel reinforcement mass loss (corrosion damage) ranged between 10%, 20% to 30 % were created in the columns by using a galvanostatic accelerated corrosion method combined with wetting-drying cycles. The uniaxial compression test was implemented for damaged columns up to failure. Based on the experimental outcomes, it was revealed that the corrosion damage had substantially reduced the performance of columns. The decrement of the load capacity of corroded columns ranged between 19% to 40% and for corrosion, level ranged from 10% to 30%, respectively. The decrement of the final deformation of corroded columns ranged between 15% to 30% and for corrosion, level ranged from 10% to 30%, respectively. Likewise, the failure mode and relationship between the stress and strain for corroded columns had been adversely affected by corrosion.

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Laboratory Simulation of Corrosion Damage in Reinforced Concrete

Cited by 35 publications

References 13 publications

Experimental Comparability Among Different Accelerated Reinforced Steel Concrete Corrosion Methods

Experimental Comparability Among Different Accelerated Reinforced Steel Concrete Corrosion Methods

Prevention of Reinforcement Corrosion in Concrete by Sodium Lauryl Sulphate: Electrochemical and Gravimetric Investigations

Compressive Performance of Corroded Reinforced Concrete Columns

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