Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic FeltU.S. National Bureau of Standards, 1969 - 15 pages 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). |
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... Office Buildings . 40 cents BSS17 . Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement . 40 cents BSS18 . Smoke and Gases Produced by Burning Aircraft Interior Materials . 35 cents BSS19 . Study of the ...
... Office Buildings . 40 cents BSS17 . Causes of Variation in Chemical Analyses and Physical Tests of Portland Cement . 40 cents BSS18 . Smoke and Gases Produced by Burning Aircraft Interior Materials . 35 cents BSS19 . Study of the ...
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... . Sci . Ser . 24 , 17 pages ( October 1969 ) CODEN : BSSNB Issued October 1969 For sale by the Superintendent of Documents , U.S. Government Printing Office Washington , D.C. 20402 - Price 30 cents Architectural Library TH 7 458 no . 24 1 .
... . Sci . Ser . 24 , 17 pages ( October 1969 ) CODEN : BSSNB Issued October 1969 For sale by the Superintendent of Documents , U.S. Government Printing Office Washington , D.C. 20402 - Price 30 cents Architectural Library TH 7 458 no . 24 1 .
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... ) . [ 10 ] Manual of Test Procedures for Roofing Granules , Asphalt Roofing Industry Bureau , ( 1956 ) . US GOVERNMENT PRINTING OFFICE 1969 O - 353-127 15 U.S. DEPARTMENT OF COMMERCE WASHINGTON , D.C. 20230 OFFICIAL BUSINESS.
... ) . [ 10 ] Manual of Test Procedures for Roofing Granules , Asphalt Roofing Industry Bureau , ( 1956 ) . US GOVERNMENT PRINTING OFFICE 1969 O - 353-127 15 U.S. DEPARTMENT OF COMMERCE WASHINGTON , D.C. 20230 OFFICIAL BUSINESS.
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... Office , Washington , D.C. , 20402 Dear Sir : Please add my name to the announcement list of new publications to be issued in the series : National Bureau of Standards Building Science Series . Name Company Address City State Zip Code ...
... Office , Washington , D.C. , 20402 Dear Sir : Please add my name to the announcement list of new publications to be issued in the series : National Bureau of Standards Building Science Series . Name Company Address City State Zip Code ...
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... Office for Information Programs . THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement ; coordinates that system with measurement systems of ...
... Office for Information Programs . THE INSTITUTE FOR BASIC STANDARDS provides the central basis within the United States of a complete and consistent system of physical measurement ; coordinates that system with measurement systems of ...
Common terms and phrases
60 percent aluminum aluminum-base specimens appearance Applied areas asphalt coatings ASTM base Black Slate 25 blistering Blue Black Slate Building Building Science Series Bureau of Standards California asphalt Cement Center cents Characteristics Clay Column COMMERCE concentrations consists containing corresponding cracking criteria deterioration differences direction divisions doctor bar Dolomite durability early effects exposed exposure failed failure felt-base specimens FIGURE Fly Ash Government granule-surfaced specimens granules grid half heated industry Institute Kraft paper listed longer Loss on ignition losses machine materials measurement method Mica Mid-Continent asphalt mils mineral additives Months Ratio Months National Bureau observed Office Organic panel passed performances period physical prepared procedure produced Properties provides Ratio Months Ratio reference reported Research rolls roofing saturated felt sheets shingle Silica smooth smooth-surface smooth-surface specimens spalling surface TABLE technical Technology temperature tests three asphalts Venezuela asphalt Washington weather weatherometer tests