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Effect of corrosion layer of steel bar in concrete on time-variant corrosion rate

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Abstract

Corrosion current density of steel bar in concrete was measured in active corrosion process under a designed artificially controlled climate environment. The active corrosion process shows the characteristics of the time-variant corrosion rate, and the three phases of the corrosion process are presented. The corrosion rate decreases at first; this is followed by a steady state phase; finally after concrete cover cracking caused by corrosion, an ascending phase of the corrosion rate is observed. The mechanism of the time-variation characteristics is discussed based on the microstructure of the interfacial transition zone (ITZ) between steel bars and concrete at different corrosion levels. The microstructure shows that the porous interfacial transition zone gradually transforms into a dense corrosion layer composed of concrete and corrosion products due to expansion of the corrosion products. The layer is called as corrosion layer for short in this paper. The main reason for the descent of the corrosion rate is that transportation of oxygen and moisture is retarded due to the dense corrosion layer. When the equilibrium between rates of consumption and transportation of oxygen is reached, the corrosion rate tends to be steady. The concrete cover cracking offers new access for transporting oxygen and the corrosion rate speeds up.

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References

  1. Mohammed TU, Otsuki N, Hisada M (1999) Corrosion of steel bar with respect to orientation in concrete. ACI Mater J 96(2):154–159

    Google Scholar 

  2. Bazant ZP (1979) Physical model for steel corrosion in concrete sea structures—theory. ASCE J Struct Eng 105(ST6):1137–1154

    Google Scholar 

  3. Liu X, Miao S (1990) Steel corrosion and the durability calculation of reinforced concrete structures. China Civ Eng J 23(4):69–78

    Google Scholar 

  4. Balbanic G, Bicanic N, Durekovic A (1996) The influence of W/C ratio, concrete cover thickness and degree of saturation on the corrosion rate of steel in concrete. Cement Concr Res 26:761–769. doi:10.1016/S0008-8846(96)85013-7

    Article  Google Scholar 

  5. Liu T, Weyers RW (1998) Modeling the dynamic corrosion process in chloride contaminated concrete structures. Cement Concr Res 28(3):356–379. doi:10.1016/S0008-8846(98)00259-2

    Article  Google Scholar 

  6. Yuan Y, Li G, Jiang D (2003) Corrosion rate of rebar in concrete. Proceeding of the international conference ICACS 2003, advance in concrete and structure, pp 366–373

  7. Morinaga S (1990) Prediction of service life reinforced concrete buildings based on the corrosion rate of reinforcing steel, durability of building materials and components. Proceedings of the 5th international conference helded in Brighton, UK

  8. Gonzalez JA, Lopez W, Odriguez PR (1993) Effects of moisture availability on corrosion kinetics of steel embedded in concrete. Corrosion 9:1004–1010

    Article  Google Scholar 

  9. Song X, Liu X (2000) Experiment research on corrosion of reinforcement in concrete through cathode-to-anode area ratio. ACI Mater J 97(2):148–155

    Google Scholar 

  10. Baweja D, Roper H, Sirivivatnanon V (1998) Chloride-induced steel corrosion in concrete: Part 1—corrosion rates, corrosion activity, and attack areas. ACI Mater J 95(3):207–217

    Google Scholar 

  11. Vu K, Stewart MG, Mullard J (2005) Corrosion-induced cracking: experimental data and predictive models. ACI Struct J 102(5):719–726

    Google Scholar 

  12. Mechers RE, Li CQ (2006) Phenomenological modeling of reinforcement corrosion in marine environment. ACI Mater J 103(1):25–32

    Google Scholar 

  13. Mohammed TU, Otsuki N, Hisada M, Shibata T (2001) Effect of crack width and bar types on corrosion of steel in concrete. ASCE J Mater Civ Eng 13(3):194–201

    Article  Google Scholar 

Download references

Acknowledgements

The authors would like to express their appreciation to the National Science Foundation of China. The research works belong to one part of the projects (50478100 and 50538070), which are financially supported by NSFC.

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  1. School of Civil Engineering, China University of Mining and Technology, Xuzhou, Jiangsu, 221008, China

    Yingshu Yuan, Yongsheng Ji & Jianhua Jiang

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  1. Yingshu Yuan
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  2. Yongsheng Ji
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  3. Jianhua Jiang
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Correspondence to Yingshu Yuan.

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Yuan, Y., Ji, Y. & Jiang, J. Effect of corrosion layer of steel bar in concrete on time-variant corrosion rate. Mater Struct 42, 1443–1450 (2009). https://doi.org/10.1617/s11527-008-9464-9

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