Kentucky Truss Bridge
Type of Project:
Maintenance painting of a steel truss highway bridge, built in 1950.
Project Description:
High Pressure power wash clean and apply Termarust active corrosion control coating system.
Reason project was undertaken:
Existing coating on the structure was failing and crevice corrosion and pack rust was increasing.
Name and location of facility:
KY Route 1661 over Little Sandy River, Carter Co, Kentucky, USA
Project start and completion dates:
April, 2002
Service Environment:
Temperature: -5F to +110F (-20C to 43C), snow, ice, salt and moisture.
Surface Preparation: Methods, degree of cleaning, profile:
5,000 psi High Pressure water cleaning with zero degree rotating tip and a 4 - 6 inch standoff to a SSPC-SP12 - WJ4-SC2.
Coating application methods, equipment:
Airless spray, brush, roller.
Coating system, number of coats, dry film thickness per coat, etc.:
Application of Termarust 2200 (RAVCS) Penetrant/Sealer into joints and connections and onto bearing surfaces - followed immediately with (wet on wet) application of Termarust 2100 (RAVCS) Primer/Topcoat.
Caulk coat (stripe coat) all joints and connections with 10 mils DFT Termarust 2100 (RAVCS) Penetrant/Sealer. On all bear metal and tightly adhered, contaminant free rusted surfaces apply spot prime @ 5mils DFT Termarust 2100(RAVCS) Primer/Topcoat, and then overcoat all areas with 5mils DFT Termarust 2100 (RAVCS) Primer/Topcoat.
Safety and Environmental Protection Measures:
A tarp system was used to enclose the structure during power washing and application of the Termarust coating system.
Unusual Job conditions:
None
Evidence of good performance:
After 4 months the coating is performing well, and there is no delamination of the existing tightly adhered paint, and the crevice corroded joints and connections are not bleeding.
Why Termarust was used:
The State wanted a coating system with a 5-year warranty and an expected 25-year service life.
Owner’s Representative:
Contact: Robert Meade,
Company: Kentucky Transportation Cabinet.
Tel: 502-564-4556
Contractor:
Contact: Nick Frangopoulas,
Company: Vimas Painting Company.
Tel: 330-755-3123
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