Recent research has shed light on a pressing issue affecting marine prestressed concrete bridges: reinforcement corrosion. This deterioration mechanism, exacerbated by the harsh marine environment, poses significant risks to the longevity and safety of these critical infrastructures. The study, led by MSc PhD student Suraksha Sharma from the Department of Structural Engineering at the Norwegian University of Science and Technology (NTNU), explores the potential application of cathodic protection (CP) systems as a solution.
“Corrosion is not just a problem for ordinary reinforcement; our findings indicate that prestressed tendons are also at risk,” Sharma noted in her analysis. This revelation is crucial for the construction sector, particularly as marine structures are often subjected to aggressive conditions that can accelerate wear and tear. The implications of this research extend beyond academic interest, as the construction industry grapples with the need for durable and resilient infrastructure.
Sharma’s paper reviews several case studies that highlight the challenges associated with implementing CP systems in marine prestressed concrete bridges. While cathodic protection has shown promise in mitigating corrosion, the application is not without its hurdles. “We need to address the potential problems that can arise when applying CP, ensuring that it is effective and sustainable,” Sharma emphasized.
The commercial impact of this research is significant. As infrastructure projects increasingly face scrutiny over their lifespan and maintenance costs, solutions like cathodic protection could lead to reduced repair and replacement expenses. By investing in CP systems, construction firms can enhance the durability of marine structures, ultimately leading to safer bridges and lower lifecycle costs.
This research, published in ‘Nordic Concrete Research’—translated as ‘Nordic Concrete Research’—could shape future developments in the field by prompting further investigations into innovative protective measures. As the industry moves towards more sustainable practices, understanding and addressing corrosion in marine environments will be essential.
For further information on Sharma’s work, visit lead_author_affiliation.
