The aim of this study was to develop a numerical model for the process of non-uniform corrosion under realistic temperature-relative humidity variations. Non-uniform distribution of corrosion products and their expansion around the steel bar were modeled in 2D. Cohesive elements embedded in the finite element mesh were used to model concrete cracking under corrosion. The proposed model was used to predict crack patterns and crack propagation under tropical marine type and temperate marine type climatic conditions. The climates were characterized by significant variations in temperature and relative humidity that resulted in different crack patterns and crack widths.

中文翻译：

---

真实气候下暴露于非均匀腐蚀的钢筋混凝土中的裂纹扩展

这项研究的目的是建立一个在实际温度相对湿度变化下非均匀腐蚀过程的数值模型。腐蚀产物的不均匀分布及其在钢筋周围的膨胀以2D建模。嵌入有限元网格中的粘结单元被用来模拟混凝土在腐蚀下的开裂。该模型被用于预测热带海洋型和温带海洋型气候条件下的裂纹模式和裂纹扩展。气候的特征是温度和相对湿度的显着变化，从而导致不同的裂缝类型和裂缝宽度。