Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Page 1
For building materials , where the life expectancy is of the order of decades , the observed frequently outlives the observers . Those who design the tests , know their background and appreciate the signifi- cance of results , pass out ...
For building materials , where the life expectancy is of the order of decades , the observed frequently outlives the observers . Those who design the tests , know their background and appreciate the signifi- cance of results , pass out ...
Page 7
Changes observed early in the exposure period consisted of small losses of granules in most of the specimens and heavier losses of granules in the few specimens in which poor granule adhesion was measured prior to exposure .
Changes observed early in the exposure period consisted of small losses of granules in most of the specimens and heavier losses of granules in the few specimens in which poor granule adhesion was measured prior to exposure .
Page 10
In only a few combinations containing clay or dolomite were improvements in durability of more than 20 percent observed . Fifty percent clay in- creased the durability of the California asphalt in both thicknesses by 60 percent .
In only a few combinations containing clay or dolomite were improvements in durability of more than 20 percent observed . Fifty percent clay in- creased the durability of the California asphalt in both thicknesses by 60 percent .
Page 14
When mineral additives were mixed with the asphalts , corresponding differences in durabil- ity were observed . ( 5 ) Based on the smooth - surface specimens , the results in the weatherometer tests in ...
When mineral additives were mixed with the asphalts , corresponding differences in durabil- ity were observed . ( 5 ) Based on the smooth - surface specimens , the results in the weatherometer tests in ...
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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 |