Koteš Peter, Strieška Miroslav, Bahleda František, Bujňáková Petra
Department of Structures and Bridges, Faculty of Civil Engineering, University of Žilina, 010 26 Žilina, Slovakia.
Laboratory of Civil Engineering, University of Žilina, 010 26 Žilina, Slovakia.
Materials (Basel). 2020 Mar 3;13(5):1125. doi: 10.3390/ma13051125.
Reliability is one of the most significant requirements for structures given in Eurocodes. Thus, the specific level of safety, serviceability, and durability have to be satisfied to fulfill the reliability of structures. In the case of reinforced concrete (RC) members, the corrosion of reinforcement is not assumed in the stage of structure design, which is in contrast with the structures in service, where the corrosion of reinforcement can significantly decrease their diameter ø in time. In these cases, the moment resistance in time M(t) decreases during the designed lifetime T of a structure. The corrosion speed is as a basis for the calculation of moment resistance in time M(t), i.e., a first-year corrosion rate r and a corrosion model as well. The corrosion itself is a very complicated issue, so the first-year corrosion rate r and also the corrosion model can be different under various conditions in Slovakia. The paper is focused not only to determine the corrosion speed (first-year corrosion rate r and the corrosion model) and parametric study of the moment resistance in time M(t) under various conditions in Slovakia but also shows an overview on some parameters that may influence the corrosion process.
可靠性是欧洲规范中对结构提出的最重要要求之一。因此，必须满足特定的安全、适用性和耐久性水平，以实现结构的可靠性。对于钢筋混凝土（RC）构件，在结构设计阶段不考虑钢筋的腐蚀，这与服役中的结构形成对比，在服役结构中，钢筋的腐蚀会随着时间显著减小其直径ø。在这些情况下，结构在设计使用年限T内的抗弯承载力M(t)会随时间降低。腐蚀速度是计算抗弯承载力随时间变化M(t)的基础，即第一年腐蚀速率r和腐蚀模型。腐蚀本身是一个非常复杂的问题，所以在斯洛伐克的不同条件下，第一年腐蚀速率r以及腐蚀模型可能会有所不同。本文不仅着重确定斯洛伐克不同条件下的腐蚀速度（第一年腐蚀速率r和腐蚀模型）以及抗弯承载力随时间变化M(t)的参数研究，还展示了一些可能影响腐蚀过程的参数概述。
