Bridges
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Bridges ✩
Application Note
Introduction
The Problem
Bridges are exposed to harsh environmental conditions, including water, chloride infiltration from deicing salts or salt air near oceans, and freeze-thaw cycles. Over time, these factors lead to corrosion of embedded steel, concrete deterioration, and reduced structural integrity. A comprehensive protection and treatment strategy is essential to maintain the safety, durability, and longevity of bridge structures.
Mitigation Strategy
To preserve and protect bridge structures from corrosion and environmental damage, we recommend a three-part system:
Corrosion Inhibition: The first step in the process is to stop existing corrosion activity and prevent future corrosion potential by forming a passivating layer on the steel. To this end, apply a migrating, volatile, surface-applied corrosion inhibitor to halt existing corrosion and provide long-term protection to the steel reinforcement.
Concrete Strengthening: Use a silicate-based treatment to strengthen the concrete, reduce its porosity and permeability to prevent moisture ingress and further prevent corrosion.
Water Repellency: Apply a hydrophobic surface coating to prevent water and chloride ingress, reducing the potential for future damage.
Optional Reinforcement: For areas requiring additional load-bearing capacity, FRP reinforcement is available. This advanced solution, as detailed in our FRP ++ Note, provides extra structural support where necessary, ensuring enhanced stability and durability for high-stress applications.