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 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 increased 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 increased 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 durability were observed . ( 5 ) Based on the smooth - surface specimens , the results in the weatherometer tests in most instances predicted the ...
When mineral additives were mixed with the asphalts , corresponding differences in durability were observed . ( 5 ) Based on the smooth - surface specimens , the results in the weatherometer tests in most instances predicted the ...
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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 Composition Coating thickness 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 heated industry instances Institute 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 period physical prepared produced Properties provides Ratio Months Ratio reference reported Research Retained rolls roofing saturated felt sheets shingle Silica smooth smooth-surface smooth-surface specimens spalling surface tabs technical Technology temperature tests three asphalts type of specimen Venezuela asphalt Washington weather
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 |