Sadowski Lukasz
Institute of Building Engineering, Wroclaw University of Technology, Plac Grunwaldzki 11, 50-377 Wroclaw, Poland.
ScientificWorldJournal. 2013 May 16;2013:714501. doi: 10.1155/2013/714501. Print 2013.
In recent years, the corrosion of steel reinforcement has become a major problem in the construction industry. Therefore, much attention has been given to developing methods of predicting the service life of reinforced concrete structures. The progress of corrosion cannot be visually assessed until a crack or a delamination appears. The corrosion process can be tracked using several electrochemical techniques. Most commonly the half-cell potential measurement technique is used for this purpose. However, it is generally accepted that it should be supplemented with other techniques. Hence, a methodology for assessing the probability of corrosion in concrete slabs by means of a combination of two methods, that is, the half-cell potential method and the concrete resistivity method, is proposed. An assessment of the probability of corrosion in reinforced concrete structures carried out using the proposed methodology is presented. 200 mm thick 750 mm × 750 mm reinforced concrete slab specimens were investigated. Potential E corr and concrete resistivity ρ in each point of the applied grid were measured. The experimental results indicate that the proposed methodology can be successfully used to assess the probability of corrosion in concrete structures.
近年来，钢筋腐蚀已成为建筑行业的一个主要问题。因此，人们对开发预测钢筋混凝土结构使用寿命的方法给予了高度关注。在出现裂缝或分层之前，无法直观评估腐蚀的进展情况。可以使用几种电化学技术来跟踪腐蚀过程。最常用的是半电池电位测量技术来实现这一目的。然而，人们普遍认为还应辅以其他技术。因此，提出了一种通过结合半电池电位法和混凝土电阻率法这两种方法来评估混凝土板腐蚀概率的方法。给出了使用该方法对钢筋混凝土结构腐蚀概率进行的评估。对200毫米厚、750毫米×750毫米的钢筋混凝土板试件进行了研究。测量了应用网格各点的腐蚀电位E corr和混凝土电阻率ρ。实验结果表明，所提出的方法可成功用于评估混凝土结构的腐蚀概率。
