- Author
-
Baker, M. A.
- Title
- Weather Resistance of Porcelain Enamels: 15-Year Inspection of the 1956 Exposure Test. Building Science Series.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
NBS BSS 050
July 1974
- Distribution
- Available from National Technical Information Service
- Keywords
-
porcelain enamels; weathering; acid resistance; pH; humidity; field tests
- Abstract
- In 1956, an exposure test of porcelain enamels at 4 urban and 2 ocean shore sites in the continental United States was initiated by the National Bureau of Standards and the Porcelain Enamel Institute. After fifteen years, all exposed specimens were returned to the Bureau and the changes in gloss and color determined. The gloss changes were found to be significantly different at all exposure sites except Pittsburgh, Los Angeles and Dallas. The most severe changes occurred at the Kure Beach, North Carolina, site nearest the ocean, while the least changes occurred at Pittsburgh, Los Angeles and Dallas. The differences in behavior of the specimens correlated with both the average relative humidity and the pH of the suspended particulate matter at the different sites. (Modified author abstract)