Norcure® Chloride Extraction
Electrochemical Treatments
Electrochemical treatment to extend the service life of chloride-contaminated structures.
Ronald Reagan Washington National Airport
Arlington, Virginia, United States
Preserving a historic airport terminal with innovative electrochemical concrete repair.
Owner: Metropolitan Washington Airport Authority
Consultant: John Milner Associates, Inc.
Contractor: Vector Corrosion Technologies
At Ronald Reagan Washington National Airport, the 1941 Terminal A was suffering from carbonation-induced corrosion and severe concrete deterioration. By combining traditional repairs with electrochemical re-alkalization and chloride extraction across 34,000 square feet, the project delivered a long-term, low-maintenance solution that preserved the terminal’s historic character and extended its service life by 50 years.
The Problem
The historic 1941 Terminal A at Ronald Reagan Washington National Airport, an architectural landmark, was suffering from extensive concrete deterioration. Evaluation and testing revealed that the concrete had become carbonated over time, leading to widespread corrosion of the reinforcing steel. This corrosion caused severe cracking and spalling, threatening the structural integrity and historical fabric of the building. Traditional repair methods were not sufficient to address the pervasive nature of the corrosion and ensure a long-lasting, low-maintenance repair that would preserve the building's original design.
Our Solution
To save as much historic material as possible, our solution combined traditional concrete repairs with modern electrochemical techniques. After repairing spalled and cracked areas, we used electrochemical re-alkalization on over 34,000 square feet of carbonated concrete to restore its alkalinity and halt corrosion. For areas with specific chloride contamination, we applied electrochemical chloride extraction. These short-term treatments provided a long-term corrosion mitigation strategy that was cost-effective and minimally disruptive to the historic structure.
The Result
The restoration successfully addressed the underlying cause of the corrosion, providing a high-value, warrantable repair with a projected service life of at least 50 years and a low maintenance cycle. The project successfully restored the concrete facade while retaining its original pour lines and decorative elements. The terminal reclaimed its status as a technologically advanced and beautifully preserved historic building.
Technology Used
These innovative products and technologies were used on this project.
