Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Page 1
Six finely divided mineral additives ( blue black slate , clay , dolomite , Ay ash , mica , and silica ) were evaluated at concentrations up to 60 percent in California , Mid Continent and Venezuela asphalts .
Six finely divided mineral additives ( blue black slate , clay , dolomite , Ay ash , mica , and silica ) were evaluated at concentrations up to 60 percent in California , Mid Continent and Venezuela asphalts .
Page 4
Characteristics of unstabilized asphalt coatings used as controls Asphalt California Mid - continent Venezuela Test ° F ( ° C ) 0.1 mm 0.1 mm 0.1 mm . Softening point ! Penetration at 32 ° F ( 0 ° C ) ? Penetration at 77 ° F ( 25 ° C ) ...
Characteristics of unstabilized asphalt coatings used as controls Asphalt California Mid - continent Venezuela Test ° F ( ° C ) 0.1 mm 0.1 mm 0.1 mm . Softening point ! Penetration at 32 ° F ( 0 ° C ) ? Penetration at 77 ° F ( 25 ° C ) ...
Page 5
Percent of felt weight Percent of kerosene capacity pre177 California asphalt Mid - Continent asphalt Venezuela asphalt 93 96 183 187 98 i Burette method ARIB No. 2.125 , April 1954 , ? 1 lb = 0.45 kg ( approx ) . d .
Percent of felt weight Percent of kerosene capacity pre177 California asphalt Mid - Continent asphalt Venezuela asphalt 93 96 183 187 98 i Burette method ARIB No. 2.125 , April 1954 , ? 1 lb = 0.45 kg ( approx ) . d .
Page 7
... but in some of the specimens made with Mid - Continent and Venezuela asphalt , blisters appeared well within the areas inspected . Only a very few specimens made with California asphalt had any blisters ; none had more than three .
... but in some of the specimens made with Mid - Continent and Venezuela asphalt , blisters appeared well within the areas inspected . Only a very few specimens made with California asphalt had any blisters ; none had more than three .
Page 9
... 159 171 1.0 1.0 1.1 167 25 48 79 88 21 12 101 107 151 97 1 86 68 1.0 1.9 3.2 3.5 0.8 0.5 0.8 1.2 1.5 1.1 0.9 1.3 Venezuela Asphalt . + 35 % BBS + 50 % BBS + 60 % BBS + 35 % Clay + 50 % Clay + 35 % Dolomite .
... 159 171 1.0 1.0 1.1 167 25 48 79 88 21 12 101 107 151 97 1 86 68 1.0 1.9 3.2 3.5 0.8 0.5 0.8 1.2 1.5 1.1 0.9 1.3 Venezuela Asphalt . + 35 % BBS + 50 % BBS + 60 % BBS + 35 % Clay + 50 % Clay + 35 % Dolomite .
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Common terms and phrases
60 percent aluminum aluminum-base specimens appearance Applied 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 Composition Coating thickness 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 heated industry instances Institute Loss on ignition losses machine materials measurement method Mica Mid-Continent asphalt mils mineral additives Months Ratio Months National Bureau observed Office panel passed performances period physical prepared produced Properties provides Ratio Months Ratio reference reported Research Retained rolls roofing saturated felt sheets shingle Silica smooth smooth-surface smooth-surface specimens spalling surface tabs technical Technology temperature tests three asphalts type of specimen Venezuela asphalt Washington weather
Bibliographic information
| Title | Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt Volume 24 of Building science series, United States National Bureau of Standards Volume 24 of National Bureau of Standards building science series |
| Author | Sidney H. Greenfeld |
| Publisher | U.S. National Bureau of Standards, 1969 |
| Original from | the University of Michigan |
| Digitized | 18 Aug 2006 |
| Length | 15 pages |
| Export Citation | BiBTeX EndNote RefMan |