Evaluating the effect of corrosion on service life prediction of RC structures – A parametric study

Ranjith, A.; Rao, K. Balaji; Manjunath, K.

doi:10.1016/j.ijsbe.2016.07.001

Cited by 35 publications

(21 citation statements)

References 17 publications

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“…It should be noted that the calculated service life period in Table 9 is based on the model proposed by El Maaddawy and Soudki [26]. From Table 9, it can be seen that the predicted service life of existing barrier wall when exposed to moderate rate of corrosion is equal to 150 years, which is close to the average value (160 years) which was computed previously by the mathematical models of Bazant [22] and Wang [24] as presented in the research work of Ranjith et al [39].…”

Section: Case Studysupporting

confidence: 65%

Behaviour of green ultra-high-performance concrete beams with corrosion resistant alloy steel (MMFX) bars

Metwally

Ghannam

2020

SN Appl. Sci.

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The aim of this study is to investigate the efficiency of using green ultra-high-performance concrete (GUHPC) with corrosion resistant alloy steel (MMFX) Bars in overcoming concrete cracking and steel corrosion, which will help in reducing inspection, maintenance, and repair works. To do so, a nonlinear finite element (FE) analysis was carried-out to model full-scale concrete beams which are often subjected to cracks during its service life time. The obtained results were compared with experimental data and the comparison was most satisfactory. In addition, a comparison was made between the proposed materials and traditional reinforced concrete in terms of crack widths, the intensity of cracks and service life period. The obtained results showed that using GUHPC and MMFX as a construction material in concrete structures provides high stiffness, high strength, enhanced service life and crack control beside its cost efficiency.

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Section: Case Studysupporting

confidence: 65%

Behaviour of green ultra-high-performance concrete beams with corrosion resistant alloy steel (MMFX) bars

Metwally

Ghannam

2020

SN Appl. Sci.

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“…Corrosion, attacking mainly reinforcements via the pores in the material bulk, is primarily due to carbonation and chloride attack [12,[19][20][21][22]. Dry environments favor corrosion because of carbonation and carbon oxide excess [23]. On the other hand, localized corrosion in different types of cement-based structures exposed to marine environments may lead to premature structure failure due to chloride ingress through the net of the material pores or via ion incorporation in the mixture [12,24,25].…”

Section: Introductionmentioning

confidence: 99%

“…For concrete structures in marine environments, the service life is the sum of the durations of the two stages, while durability and serviceability of the structures depend greatly on the duration of the initiation stage [12]. A variety of methods are currently available in the literature for prevention of deterioration due to chloride penetration, as are models for prediction of the time of corrosion initiation and total service life [19][20][21][22][23][24]26]. In order to better assess the phenomenon, knowledge of the different driving forces responsible for the penetration of chloride ions in concrete is indispensable.…”

Section: Introductionmentioning

confidence: 99%

Effect of Carbon Nanotubes on Chloride Penetration in Cement Mortars

et al. 2019

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The study investigates the effect of carbon nanotubes on chloride penetration in nano-modified mortars and reports on the physical, electrical, and mechanical performance of the material. Mortars were artificially corroded and their surface electrical surface conductivity as well as flexural and compressive strength were measured. The influence of variable nanotube concentration in accelerated corrosion damage was evaluated. Nanotube concentration was found to significantly affect the permeability of the mortars; improvements in flexural and compressive response of mortars exposed to salt spray fog, compared to virgin specimens, were rationalized upon decreases in the apparent porosity of the materials due to filling of the pores with sodium chloride. Electrical resistivity was found to increase up to two orders of magnitude with respect to the surface value; above the percolation threshold, the property impressively increased up to five orders of magnitude.

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“…due to reinforcement corrosion, must be accounted for. In literature, models can be found to describe this timedependent deterioration (Coronelli & Gambarova 2004;Marsh & Frangopol 2008;Ranjith et al 2016;Val & Melchers 1997). However, the real corrosion state and/or progress of an (existing) structure can differ from the estimations made by these models.…”

Section: Introductionmentioning

confidence: 99%

Detecting and localizing corrosion induced damage in reinforced concrete structures based on modal data

Vereecken¹,

Botte²,

Caspeele³

et al. 2021

Life-Cycle Civil Engineering: Innovation, Theory and Practice

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Reinforced concrete structures degrade over time, among others due to corrosion. This degradation process is not uniform along the structure. Monitoring and inspections can be used to detect damage and update a deterioration model of the structure. In this work, a model-based method is used to identify damage through the calibration of a FEM model based on modal characteristics. The model calibration is performed by means of a Bayesian method, using MCMC to sample the posterior distributions of model parameters for the time-dependent degradation of material properties. The calibrated model can then be used for a more accurate prediction of the remaining service life. Furthermore, it enables to be implemented in a pre-posterior analysis framework to determine the VoI of the monitoring and inspection program for comparison of different monitoring and inspection strategies.

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Evaluating the effect of corrosion on service life prediction of RC structures – A parametric study

Cited by 35 publications

References 17 publications

Behaviour of green ultra-high-performance concrete beams with corrosion resistant alloy steel (MMFX) bars

Behaviour of green ultra-high-performance concrete beams with corrosion resistant alloy steel (MMFX) bars

Effect of Carbon Nanotubes on Chloride Penetration in Cement Mortars

Detecting and localizing corrosion induced damage in reinforced concrete structures based on modal data

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