방청제를 함유한 콘크리트의 염소 이온 확산 특성

Chloride Diffusion Properties of Concrete with Corrosion Inhibitor

Recently, the degradation of reinforced concrete structures due to physical and chemical attack has been a major issue in construction engineering. One of the main causes of degradation of concrete structures can be ascribed to chloride-induced corrosion, i.e., the rapid penetration of chloride ions into concrete. To estimate durability of reinforced concrete structures exposed to marine environment, many different kinds of accelerated tests to evaluate the concrete diffusivity were proposed. In this study, present test methods are reviewed and a proper test method for concrete is selected. The diffusion coefficients of concrete with corrosion inhibitor are measured using the proposed method, and then, measured values are compared to those of concrete without corrosion inhibitor. It is found from experimental results that diffusion coefficient re decreased with curing ages.