This paper presents experimental and theoretical methods to study the damage layer evolution of a breakwater made with concrete hollow squares in marine environment. Wetting time was directly related to the performance degradation of the breakwater by observation. The thickness of damage layer was detected by means of ultrasonic testing. Meanwhile, some samples drilled from concrete hollow squares were analyzed by SEM and XRD in order to illustrate the damage mechanism. Subsequently, a theoretical model containing wetting time ratio was established to simulate the damage layer evolution based on Fick’s second law, which could be suggested to predict the service life of concrete structures in marine environment.

中文翻译：

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海水攻击下防波堤的破坏层演化：测试与建模

本文提出了实验和理论方法来研究海洋环境中混凝土空心方格制成的防波堤的破坏层演化。通过观察，润湿时间与防波堤的性能下降直接相关。通过超声测试来检测损伤层的厚度。同时，通过SEM和XRD分析了从混凝土空心方格钻出的一些样品，以阐明其损伤机理。随后，基于菲克第二定律建立了包含润湿时间比的理论模型，模拟了损伤层的演化，为预测混凝土结构在海洋环境下的使用寿命提供了依据。