Abstract:

Reinforced concrete systems have been created with the reinforcement of steel bars in order to increase the low tensile strength of concrete, which is preferred in the first place as a building material in many construction areas, as opposed to its high compressive strength, and to prevent brittle collapse under the bending stresses. The high alkaline condition provided by the concrete is one of the most important criteria sought in reinforced concrete elements in order to ensure the adherence between the reinforcement and the concrete and to protect the reinforcement from corrosion. Concrete, which has a permeable structure, corrodes over time if exposed to aggressive chemicals and cannot provide the expected durability. Corrosion is the loss of metallic properties by entering into a chemical or electrochemical reaction with the environment in which the reinforcement is exposed. Besides causing cross-section loss in reinforcement, corrosion; it also causes the adherence between reinforcement and concrete to decrease or disappear. Today, reinforced concrete structures are designed according to their self-weight, service and seismic loads. However, since corrosion is not taken into account in the analyses, due to the loss of adherence and cross-section of the reinforcement over time, it causes the structures to be damaged or collapsed in an earthquake. In this study, the test specimens prepared to determine the adherence loss of reinforcements due to corrosion were designed to represent the existing reinforced concrete structures in Turkiye. As parameters, 5 different concrete groups, 2 different types of reinforcement and 2 different curing conditions were kept variable, the samples were subjected to accelerated corrosion test, and the change in adhesional strength was evaluated in graphs and tables.

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