Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Page 1
The most certain way to determine how a product will weather in a given geographical 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 ...
The most certain way to determine how a product will weather in a given geographical 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 ...
Page 3
Surface area Oil absorption ' - Water absorption Moisture Solubility . Free alkali SiO2 CaO + MgO K2O + NaO SO . Carbon Mils 9.84 6.97 5.86 4.92 3.47 2.91 2.44 1.73 1.57 0.79 0.39 0.16 0.08 Ease of mixing 1 Plasticity index 34.
Surface area Oil absorption ' - Water absorption Moisture Solubility . Free alkali SiO2 CaO + MgO K2O + NaO SO . Carbon Mils 9.84 6.97 5.86 4.92 3.47 2.91 2.44 1.73 1.57 0.79 0.39 0.16 0.08 Ease of mixing 1 Plasticity index 34.
Page 5
An area of 4 x 7 in was exposed , leaving each specimen a 3 - in head lap . Percent of felt weight Percent of kerosene capacity 93 California asphalt Mid - Continent asphalt Venezuela asphalt . 177 183 187 96 98 i Burette method ARIB No ...
An area of 4 x 7 in was exposed , leaving each specimen a 3 - in head lap . Percent of felt weight Percent of kerosene capacity 93 California asphalt Mid - Continent asphalt Venezuela asphalt . 177 183 187 96 98 i Burette method ARIB No ...
Page 6
The areas around the edges ( 0.325 in wide ) of the 4- X 7 - in area were excluded from the examination to eliminate the edge effects . The numbers 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- X 7 - in area were excluded from the examination to eliminate the edge effects . The numbers of squares with cracks and spalled coating were counted and recorded during each ...
Page 7
About a quarter of the specimens had cracks in 5 percent of their surface areas ( five grid areas ) after 12 and a half years . No spalling of the coatings has been observed in any of these specimens since their exposure in 1952.
About a quarter of the specimens had cracks in 5 percent of their surface areas ( five grid areas ) after 12 and a half years . No spalling of the coatings has been observed in any of these specimens since their exposure in 1952.
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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 |