Effects of Mineral Additives on the Durability of Coating-grade Roofing Asphalts
Author : Sidney H. Greenfeld
Publisher :
Page : 20 pages
File Size : 24,85 MB
Release : 1956
Category : Building materials
ISBN :
Author : Sidney H. Greenfeld
Publisher :
Page : 20 pages
File Size : 24,85 MB
Release : 1956
Category : Building materials
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Author :
Publisher :
Page : 598 pages
File Size : 41,99 MB
Release : 1960
Category : Engineering
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Author : Sidney H. Greenfeld
Publisher :
Page : 28 pages
File Size : 13,33 MB
Release : 1969
Category : Roofing, Bituminous
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Sixteen years of outdoor weathering of laboratory-prepared smooth-surface and mineral-surfaced, felt-base roofing specimens has provided information on the effects of mineral additives on the durability of coating-grade roofing asphalts. Six finely divided mineral additives (blue black slate, clay, dolomite, fly ash, mica, and silica) were evaluated at concentrations up to 60 percent in California, Mid Continent and Venezuela asphalts. The mineral-surfaced specimens are all performing satisfactorily, and show only minor degrees of degradation. Of the smooth-surfaced specimens, the Mid-Continent asphalt performed the best and the California asphalt the poorest. The mica and blue black slate increased the durabilities of all three asphalts at all concentrations and two coating thicknesses. Fly ash, clay, dolomite, and silica were beneficial in some combinations, but had little effect in others. In general, these early results from outdoor exposure tend to corroborate the results obtained on these coatings exposed in weatherometers. (Author).
Author : United States. National Bureau of Standards
Publisher :
Page : 342 pages
File Size : 49,5 MB
Release : 1960
Category : Engineering
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Author :
Publisher :
Page : 1258 pages
File Size : 33,68 MB
Release : 1947
Category : Building materials
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Author :
Publisher :
Page : 68 pages
File Size : 28,39 MB
Release : 1966
Category : Mine safety
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Author : United States. National Bureau of Standards
Publisher :
Page : 382 pages
File Size : 27,38 MB
Release : 1947
Category : Government publications
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Author : United States. National Bureau of Standards
Publisher :
Page : 544 pages
File Size : 31,20 MB
Release : 1968
Category : Washington (D.C.)
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Author : United States. National Bureau of Standards
Publisher :
Page : 540 pages
File Size : 42,36 MB
Release : 1968
Category : Government publications
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Author : National Institute of Standards and Technology (U.S.)
Publisher :
Page : 554 pages
File Size : 11,95 MB
Release : 1970
Category :
ISBN :