Study of corrosion protection offered to concrete reinforcement by organic coatings and inhibitors

Paraskevi Pantazopoulou, SOFIA KALOGEROPOULOU

Abstract


The application of organic coatings on concrete is the most widespread method for the protection of both the concrete and the steel reinforcement against weathering and corrosion, performing as well in decoration. Coatings prevent the access of harmful substances, mainly carbon dioxide and chlorides, from the environment into concrete. Exposure to sunlight, moisture and heat are the main factors influencing the durability of coatings and substrates. Corrosion inhibitors are also used in concrete to prevent corrosion, forming a protective film on the surface of the reinforcement and reducing chloride ion ingress into concrete. This study investigates reinforcement corrosion protection through organic coatings and corrosion inhibitors under accelerated conditions and assesses physicochemical properties of these coatings, such as liquid water permeability, water-vapor transmission rate and carbonation of concrete.


Keywords


concrete reinforcement corrosion; organic coatings; corrosion inhibitors; protective ability; physicochemical properties of coatings

Full Text:

PDF

References


Adler, K.K., 1994. Protection of concrete against carbonation. in: R.N. Swamy (Ed.), Proceedings of the International Conference on Corrosion and Corrosion Protection of Steel in Concrete, Sheffield, pp. 1081–1093.

Al-Tholaia, M.M.H., Azad, A.K., Ahmad, S., 2014. A comparative study of corrosion resistance of different coatings for mortar–embedded steel plates. Construction and Building Materials, 56, pp. 74–80, 2014.

Bertolini, L., Elsener, B., Pedeferri, P., Redaelli E., Polder R., 2004. Corrosion of Steel in Concrete: Prevention, Diagnosis, Repair, Wiley, Weinheim.

Broomfield, J., 1997. Corrosion of Steel in Concrete: Understanding, Investigation and Repair. E&FN SPOK, UK.

Broomfield, J.P. 1999. Corrosion inhibitors for steel in concrete. Concrete, 33(6), pp. 44-47.

Kalogeropoulou, S., Pantazopoulou, P., Zafeiropoulou, Th., Sideris, K., 2014. Investigation of Organic Coatings Durability on Concrete Reinforcement Corrosion Protection with the Synergistic Influence of Corrosion Inhibitors. In: 9th International Scientific Conference eRA-9, Piraeus, Greece, 22- 24/9/2014.

Pantazopoulou, P., Zafeiropoulou, Th., Kalogeropoulou, S., Fountoukidis, E., Batis, G., Papadopoulos, K., 2014. Examination of physicochemical properties of organic coatings applied on concrete. In: 9th International Scientific Conference eRA-9, Piraeus, Greece, 22- 24/9/2014.

Selvaraj, R. Selvaraj, M., Iyer, S.V.K., 2009. Studies on the evaluation of the performance of organic coatings used for the prevention of corrosion of steel rebars in concrete structures. Progress in Organic Coatings, 64, pp. 454–459.

Seneviratne, A.M.G., Sergi, G., Page, C.L. 2000. Performance characteristics of surface coatings applied to concrete for control of reinforcement corrosion. Construction and Building Materials, 14, pp. 55-59.

Soylev, T.A., Richardson, M.G, 2008. Corrosion inhibitors for steel in concrete: State-of-the-art report, Construction and Building Materials, 22, pp. 609–622.

Wombacher, F., Maeder, U., Marazzani, B., 2004. Aminoalcohol based mixed corrosion inhibitors. Cement & Concrete Composites, 26, pp. 209-216.


Refbacks

  • There are currently no refbacks.