Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
From inside the book
Page 1
... area is to expose the product and observe it over the years . For materials or systems of low life expectancy , this procedure has been proven extremely satisfactory . For building materials , where the life expectancy is of the ...
... area is to expose the product and observe it over the years . For materials or systems of low life expectancy , this procedure has been proven extremely satisfactory . For building materials , where the life expectancy is of the ...
Page 2
Asphalts The descriptions and properties of the three asphalts used in this investigation were reported previously [ 3 ] and are tabulated in table 2 . B C D Specific gravity 2 . Surface area Oil absorption ' -.
Asphalts The descriptions and properties of the three asphalts used in this investigation were reported previously [ 3 ] and are tabulated in table 2 . B C D Specific gravity 2 . Surface area Oil absorption ' -.
Page 3
Surface area Oil absorption ' - Water absorption - Loss on ignition at 1000 ° F . Loss on ignition at 1800 ° F . Moisture Solubility . Free alkali .m / g .. 2.94 2.64 2.87 2.62 3.01 2.68 1.0 27.2 2.0 2.0 2.7 2.5 lb / 100 lb .
Surface area Oil absorption ' - Water absorption - Loss on ignition at 1000 ° F . Loss on ignition at 1800 ° F . Moisture Solubility . Free alkali .m / g .. 2.94 2.64 2.87 2.62 3.01 2.68 1.0 27.2 2.0 2.0 2.7 2.5 lb / 100 lb .
Page 5
Upon cooling , each specimen was cut to 7 X 11 in and exposed the next day on wooden roof decks , which had been covered with smooth - surface roll roofing ( facing due south and at an angle of 45 ° ) . An area of 4 X 7 in was exposed ...
Upon cooling , each specimen was cut to 7 X 11 in and exposed the next day on wooden roof decks , which had been covered with smooth - surface roll roofing ( facing due south and at an angle of 45 ° ) . An area of 4 X 7 in was exposed ...
Page 6
The areas around the edges [ 0.325 in wide ] of the 4- × 7 - in area were excluded from the examination to eliminate the edge effects . The num- bers of squares with cracks and spalled coating were counted and recorded during each ...
The areas around the edges [ 0.325 in wide ] of the 4- × 7 - in area were excluded from the examination to eliminate the edge effects . The num- bers of squares with cracks and spalled coating were counted and recorded during each ...
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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 |