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Identifying factors influencing corrosion rate in reinforced concrete under simulated natural climate


Affiliations
1 Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai 400 076, India, India
2 Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India, India
 

The influence of various parameters on corrosion rate in reinforced concrete was examined using analysis of variance for crack initiation and crack propagation phases. Water–cement (w/c) ratio was found to be the most significant factor before the onset of concrete surface crack, followed by the time of wetting. In the crack propagation phase, contribution of w/c ratio reduced while time of wetting and external chloride concentration became prominent. The concrete cover values of 30 mm and 60 mm affected the corrosion rate marginally. The diameter of reinforcing steel and spacing between bars were the least contributing factors to the corrosion rate under both phases

Keywords

Chloride ions, corrosion rate, crack initiation and propagation, natural climatic conditions, reinforced concrete.
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  • de Medeiros-Junior, R. A., de Lima, M. G. and de Medeiros, M. H. F., Service life of concrete structures considering the effects of tem-perature and relative humidity on chloride transport. Environ. Dev. Sustain., 2014, 17, 1103–1119.

  • Liang, M. T., Wang, K. L. and Liang, C. H., Service life prediction of reinforced concrete structures. Cem. Concr. Res., 1999, 29, 1411– 1418.

  • Bentz, E. C., Probabilistic modeling of service life for structures subjected to chlorides. ACI Mater. J., 2003, 100, 391–397.

  • Jiao, J. T., Ye, Y. H., Wang, C. F. and Ye, G. C., The reliability ana-lysis of the initiation time for RC members under chlorine salt ingress and local micro-climate. Mater. Sci. Forum, 2016, 866, 134–138.

  • Nossoni, G., Asce, A. M., Harichandran, R. S. and Asce, F., Electro-chemical–mechanistic model for concrete cover cracking due to corro-sion initiated by chloride diffusion. J. Mater. Civ. Eng., 2014, 26.

  • Cao, C., Cheung, M. M. S. and Chan, B. Y. B., Modelling of inter-action between corrosion-induced concrete cover crack and steel corrosion rate. Corros. Sci., 2013, 69, 97–109.

  • Chen, E. and Leung, C. K. Y., A coupled diffusion–mechanical model with boundary element method to predict concrete cover cracking due to steel corrosion. Corros. Sci., 2017, 126, 180–196.

  • Zhao, Y., Dong, J., Wu, Y. and Jin, W., Corrosion-induced concrete cracking model considering corrosion product-filled paste at the concrete/steel interface. Constr. Build. Mater., 2016, 116, 273–280.

  • Ožbolt, J., Oršani, F. and Balabani, G., Modeling damage in con-crete caused by corrosion of reinforcement: coupled 3D FE model. Int. J. Fract., 2012, 178, 233–244.

  • Michel, A., Geiker, M. R., Stang, H. and Lepech, M. D., Integrated modelling of corrosion-induced deterioration in reinforced concrete structures. In EUROCORR, Estoril, Spain, 2013, pp. 1–5.

  • Thybo, A. E. A., Michel, A. and Stang, H., Smeared crack modelling approach for corrosion-induced concrete damage. Mater. Struct., 2017, 50, 1–14.

  • Dagher, H. and Kulendran, S., Finite element modeling of corrosion damage in concrete structures. ACI Struct. J., 1992, 89, 699–708.

  • Guzman, S., Galvez, J. C. and Sancho, J. M., Modelling of corrosion-induced cover cracking in reinforced concrete by an embedded co-hesive crack finite element. Eng. Fract. Mech., 2012, 93, 92–107.

  • Zhang, J., Ling, X. and Guan, Z., Finite element modeling of con-crete cover crack propagation due to non-uniform corrosion of rein-forcement. Constr. Build. Mater., 2017, 132, 487–499.

  • Jamali, A., Angst, U., Adey, B. and Elsener, B., Modeling of corro-sion-induced concrete cover cracking: a critical analysis. Constr. Build. Mater., 2013, 42, 225–237.

  • Otieno, M., Beushausen, H. and Alexander, M., Prediction of corro-sion rate in RC structures – a critical review. In Modelling of Corro-ding Concrete Structures, RILEM Book Series 5, 2011, pp. 15–37.

  • Scott, A. and Alexander, M. G., The influence of binder type, crack-ing and cover on corrosion rates of steel in chloride-contaminated concrete. Mag. Concr. Res., 2007, 59, 495–505.

  • Balabanić, G., Bićanić, N. and Dureković, A., Mathematical model-ing of electrochemical steel corrosion in concrete. J. Eng. Mech., 1996, 122, 1113–1122.

  • Balabanić, G., Bićanić, N. and Dureković, A., The influence of w/c ratio, concrete cover thickness and degree of water saturation on the corrosion rate of reinforcing steel in concrete. Cem. Concr. Res., 1996, 26, 761–769.

  • Otieno, M. B., Alexander, M. G. and Beushausen, H.-D., Corrosion in cracked and uncracked concrete – influence of crack width, concretequality and crack reopening. Mag. Concr. Res., 2010, 62, 393–404.

  • Isgor, O. B. and Ghods, P., The effect of temperature on the corro-sion of steel in concrete. Part 1: simulated polarization resistance tests and model development. Corros. Sci., 2009, 51, 415–425.

  • Hervert, H. L. Z. and Mendez, R. C., Identifying factors influencing the corrosion rate of steel using nonparametric statistics. Int. J. Electrochem. Sci., 2012, 7, 6343–6352.

  • Villagrán Zaccardi, Y. A., Bértora, A. and Di Maio, Á. A., Tempe-rature and humidity influences on the on-site active marine corro-sion of reinforced concrete elements. Mater. Struct., 2013, 46, 1527–1535.

  • Otieno, M., Beushausen, H. and Alexander, M., Chloride-induced corrosion of steel in cracked concrete – Part I: experimental studies under accelerated and natural marine environments. Cem. Concr. Res., 2016, 79, 373–385.

  • Liu, Y. and Weyers, R. E., Modeling the time-to-corrosion cracking in chloride contaminated reinforced concrete structures. ACI Mater. J., 1998, 95, 675–681.

  • Raupach, M., Models for the propagation phase of reinforcement corrosion – an overview. Mater. Corros., 2006, 57, 605–613.

  • Mart, B., Service life modelling of reinforced concrete structures exposed to chlorides, Ph.D. thesis, University of Toronto, 1999.

  • Jung, W. Y., Yoon, Y. S. and Sohn, Y. M., Predicting the remaining service life of land concrete by steel corrosion. Cem. Concr. Res., 2003, 33, 663–677.

  • Vu, K. A. T. and Stewart, M. G., Structural reliability of concrete bridges including improved chloride-induced corrosion models. Struct. Saf., 2000, 22, 313–333.

  • Otieno, M., Beushausen, H. and Alexander, M., Chloride-induced corrosion of steel in cracked concrete – Part II: corrosion rate pre-diction models. Cem. Concr. Res., 2016, 79, 386–394.

  • Xia, J., Jin, W.-L. and Li, L.-Y., Effect of chloride-induced reinfor-cing steel corrosion on the flexural strength of reinforced concrete beams. Mag. Concr. Res., 2012, 64, 471–485.

  • John, H., Bungey, S. G. M. and M. G. G., Testing of Concrete in Struc-tures, Taylor and Francis, Milton Park, Abingdon, England, 2006.

  • Golden, G., The effect of cyclic wetting and drying on the corro-sion rate of steel in reinforced concrete. MS thesis, University of Cape Town, 2015.


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  • Identifying factors influencing corrosion rate in reinforced concrete under simulated natural climate

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Authors

Aditi Chauhan
Department of Civil Engineering, Indian Institute of Technology Bombay, Mumbai 400 076, India, India
Umesh Kumar Sharma
Department of Civil Engineering, Indian Institute of Technology Roorkee, Roorkee 247 667, India, India

Abstract


The influence of various parameters on corrosion rate in reinforced concrete was examined using analysis of variance for crack initiation and crack propagation phases. Water–cement (w/c) ratio was found to be the most significant factor before the onset of concrete surface crack, followed by the time of wetting. In the crack propagation phase, contribution of w/c ratio reduced while time of wetting and external chloride concentration became prominent. The concrete cover values of 30 mm and 60 mm affected the corrosion rate marginally. The diameter of reinforcing steel and spacing between bars were the least contributing factors to the corrosion rate under both phases

Keywords


Chloride ions, corrosion rate, crack initiation and propagation, natural climatic conditions, reinforced concrete.

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DOI: https://doi.org/10.18520/cs%2Fv123%2Fi11%2F1327-1333