Research Progress of Similarity of Resistance to Chloride Ingress into Concrete Exposed to Marine Environment

Chloride-induced corrosion is one of the major deterioration mechanisms of reinforced concrete that may seriously affect the durability of the structures in marine environment. The deterioration of concrete durability as a long-term process is usually investigated by lab-scale artificial acceleration simulation. However, there is no normative standard in the corresponding test methods, test systems and acceleration factors in the indoor simulation and coastal exposure research on concrete durability, thus restricting the engineering application of the research results. It is necessary for the durability of concrete structure research more practical engineering significance to establish the similarity relationship of chloride ion ingress into concrete between the coastal exposure environment and the indoor simulated environment. It could accurately evaluate the durability and predict service life of concrete structures in the marine environment. From the viewpoints of single factor and multi-factor effects, the available experimental, theoretical analysis and numerical simulation of the similarity of chloride ion ingress into concrete were introduced, respectively. The research findings on the similarity of chloride ion ingress into concrete exposed to marine environment were summarized. The relevant discussion and expectation of this subject were conducted, thus providing a basis for future theoretical research and practical engineering application. © 2020, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.