The experimental and innovative research on usability of sulphur polymer composite for corrosion protection of reinforcing steel and concrete

This paper presents the results of the experimental research and analyses indicating the usefulness of polymer sulphur composites to the protection against corrosion of reinforcement and concrete. In paper presents materials also the domain of the personal investigations and the methodology are definite. After the analyse of the initial results the optimum compositions have been chosen to the experimental research.This paper presents investigation results of corrosion rate for steel reinforcement bars and concrete that have been covered with polymer coating and have been exposed to tensile stresses in a solution simulating pore-liquid of concrete. Experimental investigation of tendencies that occur during corrosion process of reinforcing steel and concrete covered with polymer and exposed to tensile stress has been attempted. To determine an effect of tensile stress on corrosion rate for St3S-b steel and concrete that has been covered with sulphuric coating and exposed to aqueous environment that was to simulate pore-liquid of concrete contaminated with chloride ions was an aim of the investigation. The samples underwent loading in a one-axial state of the stress including varied values of tensile stress, at the same time corrosion rate was determined potentiostatically. Potentiostatic investigation has been carried out in order to determine parameters describing corrosion rate of samples tested.Corrosion rate for the steel and concrete has decreased by orders of magnitude when covered with protective coating even though this latest became unseal at load exceeding. A small decrease of corrosion rate has been found for the steel and concrete that has not been covered with polymer coating when placed in model pore-liquid of concrete and exposed to tensile stress increasing.