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Pollution damage to the Powell Building, Reston, Virginia

January 1, 1999

Concrete column segments of the Powell Building (Reston, VA) exposed to the elements and wetted by precipitation were `cleaned' and roughened, but sheltered portions of the columns retained their smoothness and pollution accumulates, similar to observations for limestone, marble, and sandstone. Weathering effects on the columns were dominated by precipitation run-off and not the acidity of the precipitation. The process may be dry deposition of sulfur dioxide (SO2) and nitric oxides (NOx) that formed soluble salts in the presence of humid air or dew, salts that were removed by precipitation run-off.

Publication Year 1999
Title Pollution damage to the Powell Building, Reston, Virginia
Authors B. R. Doe, M.M. Reddy, J.R. Eggleston
Publication Type Article
Publication Subtype Journal Article
Series Title Materials Performance
Index ID 70020910
Record Source USGS Publications Warehouse