Title: Madison Gateway
Accession Number: 2004.01
Materials: Cor-Ten steel
Graffiti in blue brushed on paint on approx. area 20 x 30 inches, bottom of center loop.
•Reduced graffiti paint with VOC solvent, (not solubilizing that would allow liquefied paint to migrate into steel oxidation layer.)
•Applied water/MEK microemulsion to lift remaining paint
•Mechanical action limited to stiff nylon brush to minimize disruption of oxidation layer.
•Applied iron oxide in 5% acetic acid plus sodium chloride in a peroxide to jump-start re-oxidation process.