Prüfverfahren zur Messung des elektrischen Widerstands an carbonfaserhaltigem Mörtel

Abstract

Test methods for measuring the electrical resistivity of mortar containing carbon fibers

In the construction industry, billions in damages occur annually due to chloride-induced corrosion. Therefore, developing new concepts to extend the lifespan of endangered structures substantially is a significant future task. Developing conductive fiber mortars as a chloride barrier aims to present a new alternative. To achieve a comprehensive barrier function, determining the electrical conductivity of the carbon fiber-containing mortar is crucial. Various measurement methods for assessing electrical resistance are examined and compared in this context. Common methods include two-point and four-point electrode techniques. Each method has its specific advantages and disadvantages regarding accuracy and applicability. Determining key parameters is essential for implementing innovative protective measures such as electrically conductive carbon fiber mortar as a chloride barrier. The comparison of these methods is intended to provide valuable insights into the optimal selection of measurement techniques, thereby contributing to the improvement of maintenance strategies.