Evaluation of Corrosion in Steel Reinforced Concrete with Brick Waste

Authors: Julieta D. Chelaru, Maria Gorea

Abstract:

The massive demolition of old buildings in recent years has generated tons of waste, especially brick waste. Thus, a concern of recent research is the use of this waste for the production of environmentally friendly concrete. At the same time, corrosion of the reinforcement steel rebar in classical concrete is a current problem. In this context, in the present paper a study was carried out on the corrosion of metal reinforcement in cement mortars with added brick waste. The corrosion process was analyzed on four compositions of mortars without and with 15%, 25% and 35% brick waste replacing the sand. The brick waste has majority content in SiO2, Al2O3, FeO3 and CaO. The grain size distribution of brick waste was close to that of the sand (dmax = 2 mm). The preparation method of the samples was similar to ordinary mortars. The corrosion action on the rebar in concrete, at different brick waste concentrations, was investigated by electrochemical measurements (polarization curves and electrochemical impedance spectroscopy (EIS)) at 1 month and 26 months. The results obtained at 26 months revealed that the addition of the brick waste in mortar improved the anticorrosion properties in the case of all samples compared with the etalon mortar. The best results were obtained in the case of the sample with 15% brick waste (the efficiency was ≈ 90%). The corrosion intermediary layer formed on the rebar surface was evidenced by SEM-EDX.

Keywords: EIS, steel corrosion, steel reinforced concrete, waste materials.

References:

[1] R. Rodrigues, S. Gaboreau, J. Gance, I. Ignatiadis and S. Betelu, “Reinforced concrete structures: A review of corrosion mechanisms and advances in electrical methods for corrosion monitoring”, Construction and Building Materials, Vol. 269, pp. 121240, 2021.
[2] M. Batayneh, I. Marie, I. Asi, “Use of selected waste materials in concrete mixes”, Waste Management Vol. 27, pp. 1870–1876, 2007.
[3] T. S. Serniabat, M. N. N. Khan, M. F. M. Zain, “Use of Waste Glass as Coarse Aggregate in Concrete: A Possibility towards Sustainable Building Construction”, World Academy of Science, Engineering and Technology International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering vol. 8, No:10, pp.1075 – 1078, October 2014.
[4] C. Zhou and Z. Chen, “Mechanical properties of recycled concrete made with different types of coarse aggregate”, Construction and Building Materials, 134, pp. 497–506, 2017.
[5] J. D. Chelaru, F. Goga and M. Gorea, “Corrosion and mechanical properties and microstructure of cement mortar containing calcium sulphate waste”, Studia UBB Chemia, Vol. 2, pp. 271-285, 2017.
[6] V. Shubina, L. Gaillet, T. Chaussadent, T. Meylheuc, J. Creus, “Biomolecules as a sustainable protection against corrosion of reinforced carbon steel in concrete”, Journal of Cleaner Production Vol. 112, pp. 666-671, 2016.
[7] D. Erdenechimeg, T. Bujinlkham and N. Erdenepurev, “Corrosion Protection of Structural Steel by Surfactant Containing Reagents”, World Academy of Science, Engineering and Technology International Journal of Materials and Metallurgical Engineering Vol. 14, No. 1, pp. 16-19, 2020.
[8] E. J. Ruíz, J. R. Cortes and W. A. Aperador, “Evaluation of Corrosion by Impedance Spectroscopy of Embedded Steel in an Alternative Concrete Exposed to the Chloride Ion”, International Journal of Chemical, Molecular, Nuclear, Materials and Metallurgical Engineering Vol. 9, No. 3, pp. 509 – 512, October 2015.
[9] A.T. Horne, I.G. Richardson, R.M.D. Brydson, “Quantitative analysis of the microstructure of interfaces in steel reinforced concrete” Cement and Concrete Research Vol. 37, pp. 1613–1623, 2007.
[10] Y. Zhao, X. Zhang, W. Jin, “Influence of environment on the development of corrosion product-filled paste and a corrosion layer at the steel/concrete interface”, Corrosion Science Vol. 124, pp. 1–9, 2017.