Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Granule - surfaced , felt - base specimens . 10 6 . Correlation with exposures in accelerated weathering machine . 10 7 . Conclusions ... 8 . References 43 14 15 Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt.
Granule - surfaced , felt - base specimens . 10 6 . Correlation with exposures in accelerated weathering machine . 10 7 . Conclusions ... 8 . References 43 14 15 Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt.
Page 2
F. Belt drive for pulling canvas belt through the machine . C. Back - Coater The felt - base specimens were all back - coated with the apparatus shown schematically in figure 2 . d . Aluminum - Base Panels The equipment used in ...
F. Belt drive for pulling canvas belt through the machine . C. Back - Coater The felt - base specimens were all back - coated with the apparatus shown schematically in figure 2 . d . Aluminum - Base Panels The equipment used in ...
Page 6
The hot plate ( A ) on the laboratory roofing machine ( fig . 1 ) was heated to about 250 ° F ( 121 ° C ) and the doctor bar ( B ) to 450 ° F ( 232 ° C ) . The canvas belt was threaded through the machine and a sheet of 12 - in wide ...
The hot plate ( A ) on the laboratory roofing machine ( fig . 1 ) was heated to about 250 ° F ( 121 ° C ) and the doctor bar ( B ) to 450 ° F ( 232 ° C ) . The canvas belt was threaded through the machine and a sheet of 12 - in wide ...
Page 8
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 the saturated felt in the machine direction as the tem- perature changes .
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 the saturated felt in the machine direction as the tem- perature changes .
Page 9
Correlation With Exposures in Accelerated Weathering Machine 7511 FT. 25 % Cracked Coating description 50 % Cracked Initial Spall 25 % Spalled 50 % Spalled Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio California ...
Correlation With Exposures in Accelerated Weathering Machine 7511 FT. 25 % Cracked Coating description 50 % Cracked Initial Spall 25 % Spalled 50 % Spalled Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio California ...
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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 |