Abstract This paper presents a stochastic procedure based on the Gamma process and copulas for prediction of corrosion-induced time to concrete cover cracking, considering the temporal and spatial variability in the corrosion process. A worked example is used to show the applicability of the proposed procedure. The results show that compared to uniform corrosion a slight non-uniformity in the corrosion process causes significant reduction, up to 40%, in the expected time to cover cracking. This signifies the importance of spatio-temporal variability in the corrosion and highlights the need for more research on quantification of temporal and spatial variabilities in the corrosion process.

中文翻译：

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考虑腐蚀时空变化的混凝土保护层开裂随机建模

摘要 本文提出了一种基于 Gamma 过程和 copula 的随机程序，用于预测混凝土保护层开裂的腐蚀诱导时间，同时考虑到腐蚀过程中的时间和空间变化。一个工作示例用于显示所提议程序的适用性。结果表明，与均匀腐蚀相比，腐蚀过程中的轻微不均匀会导致覆盖裂纹的预期时间显着减少，最多可达 40%。这表明腐蚀时空变异性的重要性，并强调需要对腐蚀过程中时空变异性的量化进行更多研究。