Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
From inside the book
Page 1
Of the smoothsurfaced 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 ...
Of the smoothsurfaced 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 ...
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
Only a very few specimens made with California asphalt had any blisters ; none had more than three . While blistering contributes to poor appearance , it does not interfere with the essential function of roofing , which is to keep the ...
Only a very few specimens made with California asphalt had any blisters ; none had more than three . While blistering contributes to poor appearance , it does not interfere with the essential function of roofing , which is to keep the ...
Page 8
1 25 % Cracked 50 % Cracked Initial Spall 25 % Spalled Coating description 50 % Spalled - Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 35 71 101 49 104 139 1.0 2.1 2.8 55 116 145 1.0 2.1 2.6 174 California Asphalt .
1 25 % Cracked 50 % Cracked Initial Spall 25 % Spalled Coating description 50 % Spalled - Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 35 71 101 49 104 139 1.0 2.1 2.8 55 116 145 1.0 2.1 2.6 174 California Asphalt .
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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 concentrations consists containing corresponding cracking criteria deterioration differences direction divisions doctor bar Dolomite durability early effects embedding Evaluation exposed exposure failed failure felt-base specimens FIGURE Fly Ash Government granule-surfaced specimens granules heated industry instances 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 panel passed performances physical prepared produced progressed Properties provides Ratio Months Ratio reference reported Research rolls roofing saturated felt sheets shingle Silica smooth smooth-surface smooth-surface specimens spalling surface technical Technology temperature tests three asphalts Venezuela asphalt Washington weather weatherometer tests wide
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 |