Robles Kevin Paolo V, Yee Jurng-Jae, Kee Seong-Hoon
Department of ICT Integrated Ocean Smart Cities Engineering, Dong-A University, Busan 49304, Korea.
National Core Research Center for Disaster-Free and Safe Ocean Cities Construction, Dong-A University, Busan 49304, Korea.
Materials (Basel). 2022 Apr 7;15(8):2725. doi: 10.3390/ma15082725.
The objective of this study is to review, evaluate, and compare the existing research and practices on electrical resistivity as a nondestructive technique in evaluating chloride-induced deterioration of reinforced concrete elements in buildings and civil infrastructure systems. First, this paper summarizes the different measurement techniques for gathering electrical resistivity (ER) values on concrete. Second, comparison analyses are performed to review the correlation of ER to different parameters representing corrosive environment and activity of steel corrosion in concrete, such as degree of water saturation, chloride penetration and diffusivity, and corrosion rate. In addition, this research enumerates and individually discusses the different environmental and interference factors that are not related to the electrochemical process of steel corrosion in concrete but directly affect the ER measurements, including temperature, the presence of steel reinforcement, cracks and delamination defects, specimen geometry, and concrete composition. Lastly and most importantly, discussions are made to determine the current gap of knowledge, to improve the utilization of this method in field and laboratory measurements, and future research.
本研究的目的是回顾、评估和比较现有的关于电阻率作为一种无损技术在评估建筑物和民用基础设施系统中钢筋混凝土构件氯化物诱导劣化方面的研究与实践。首先，本文总结了用于获取混凝土电阻率（ER）值的不同测量技术。其次，进行比较分析以审视ER与代表混凝土中腐蚀环境和钢筋腐蚀活性的不同参数之间的相关性，如饱水程度、氯化物渗透和扩散率以及腐蚀速率。此外，本研究列举并分别讨论了与混凝土中钢筋腐蚀的电化学过程无关但直接影响ER测量的不同环境和干扰因素，包括温度、钢筋的存在、裂缝和分层缺陷、试件几何形状以及混凝土组成。最后也是最重要的，进行了讨论以确定当前的知识差距，改进该方法在现场和实验室测量中的应用以及未来的研究。
