Aleyna DAL, BSc. Student

Metallurgy and Materials Engineering
Yıldız Technical University
Faculty of Chemistry - Metallurgy

Glass-Ceramic Coating for Steel Rebar for Construction Industry
Glass-ceramic materials are inorganic polycrystalline material that shows the ceramic properties as well as glass. They can be produced by several heat treatments that result in controlled nucleation and crystallization of the glass. The basis of controlled internal crystallization lies in effective nucleation, which allows the development of fine, randomly oriented grains generally without voids, microcracks, or other porosity. The most common nucleating agents are TiO 2 (titanium dioxide) and ZrO 2 (zirconium dioxide) and these oxides demonstrate minimal thermal expansion partial solubility in viscous melts [1][2] . The glass-ceramic coating is used for reinforcement steel in concrete structures owing to providing advantages such as high mechanical properties, flexibility, and applicability for various applications. However, the main advantage of this study of glass-ceramic coating for steel rebar creates the physical barrier between the steel bar and the corrosive environment [3] . The aim of the study is that enhancing the corrosion resistance of the steel rebar by coating with glass-ceramic. This study consist of production methods of process steps of glass- ceramic coating respectively are frit preparation, substrate preparation of steel rebar, application (spray, dipping, and electrophoresis methods), drying between 80°C-120 °C and, finally firing between 840°C-850 °C.

[1] Höland, W., & Beall, G. H. (2020). Glass-Ceramic Technology, 3rd Edition. New Jersey:
Wiley - American Ceramic Society.
[2] Andrews, A. I., Pagliuca, S., & Faust, W. D. (2011). Frit Making. Porcelain (Vitreous) Enamels
and Industrial Enamelling Processes The Preparation, Application and Properties of
Enamel. Mantova: Tipografia Commerciale.
[3] Yang, D., Zheng, F., Wang, H., Jiang, Z., & Xiao, H. (2014). Glass ceramic coated rebar for
high corrosion resistance and enhanced rebar-concrete bond. Magazine of Concrete
Research, 209-216.

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