Durability Evaluation of Concrete Structures in Chloride Environment Based on Multi-Level Fuzzy Comprehensive Evaluation Model

Taking the thickness of protective layer, carbonation depth, chloride ion mass fraction, steel bar cross-sectional area loss rate and steel bar corrosion potential as durability indexes, the durability of concrete structures in chloride environment was evaluated by fuzzy comprehensive evaluation method. A multi-level fuzzy comprehensive evaluation model was established, and a concrete structure maintenance management framework was proposed. Through the application case of a wharf in Lianyungang, the convenience and reliability of the model were verified.