Description
For a highway operator, such as ASFiNAG, bridges are very important assets. Despite all regular maintenance measures, these structures are strongly subjected to ageing and degradation, because of their exposure. Chloride contamination poses a significant challenge, gradually reducing the durability and service life of these structures, necessitating repair measures. This paper focuses on the comprehensive analysis of data collected through on-site monitoring and nearby weather stations.
Bridge components that were and are exposed to high chloride levels were rehabilitated with different systems and monitored over more than a decade. In the paper the rehabilitation methods, the sensor principles and initial corrosion data are presented. Seasonal corrosion trends revealed interdependencies and offered insights into repair effectiveness and its durability.
This study provides insights into cost-effective and prospective maintenance strategies, based on key indicators such as humidity, electrical resistivity, and corrosion potential. It assesses the condition of structures rehabilitated by hydrophobic treatment and coating using long-term monitoring data from a Vienna overpass. This offers valuable insights into the effectiveness of repair measures.
The continuous monitoring allows for ongoing evaluation of degradation and maintenance efficiency, that guide decisions on future maintenance intervals. This research serves as an assessment of maintenance effectiveness, ultimately contributing to save costs, extend lifespan and reduce line closures of critical road infrastructure.
