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 , fly 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 , fly 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 Softening point 1 . ° F ( ° C ) -- 223 ( 106.0 ) 224 ( 106.5 ) 227 ( 107.8 ) Penetration at 32 ° F ( 0 ° C ) 2 .
Characteristics of unstabilized asphalt coatings used as controls Asphalt California Mid - continent Venezuela Test Softening point 1 . ° F ( ° C ) -- 223 ( 106.0 ) 224 ( 106.5 ) 227 ( 107.8 ) Penetration at 32 ° F ( 0 ° C ) 2 .
Page 5
Kerosene capacity 1 Caliper , mils : Tensile , lb / in Ash , % : California asphalt . Mid - Continent asphalt . Venezuela asphalt Dry felt Rags Paper Asplund Scrap felt g ker / g felt : Saturated felt 2305 40 53 ± 2 1.900.01 57 ± 3 31 ...
Kerosene capacity 1 Caliper , mils : Tensile , lb / in Ash , % : California asphalt . Mid - Continent asphalt . Venezuela asphalt Dry felt Rags Paper Asplund Scrap felt g ker / g felt : Saturated felt 2305 40 53 ± 2 1.900.01 57 ± 3 31 ...
Page 7
Only a very few specimens made with California asphalt had any blisters ; none had more than three . ... At every level of performance and in both thick- nesses the Mid - Continent asphalt outperformed the Venezuela asphalt , which , in ...
Only a very few specimens made with California asphalt had any blisters ; none had more than three . ... At every level of performance and in both thick- nesses the Mid - Continent asphalt outperformed the Venezuela asphalt , which , in ...
Page 8
+ 60 % Silica Mid - Continent Asphalt + 35 % BBS . ... Venezuela Asphalt + 35 % BBS . ... It is evident from the above data asphalt moves roughly 25 times as much as the saturated felt does in the cross direction and 50 times as much as ...
+ 60 % Silica Mid - Continent Asphalt + 35 % BBS . ... Venezuela Asphalt + 35 % BBS . ... It is evident from the above data asphalt moves roughly 25 times as much as the saturated felt does in the cross direction and 50 times as much as ...
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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
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, ISSN 0083-1794 |
| 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 |