Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Page 1
In many instances , the current production is no longer strictly comparable to that being observed . Therefore , it has long been the practice to design rapid methods for evaluating materials and simultaneously exposing the same ...
In many instances , the current production is no longer strictly comparable to that being observed . Therefore , it has long been the practice to design rapid methods for evaluating materials and simultaneously exposing the same ...
Page 5
The mixture was continually stirred at 450 ° F ( 232 ° C ) until it no longer frothed . All compositions were made and are reported on a weight - percent basis . The saturated felts , cut into 9- X 12 - in sheets , were heated in an air ...
The mixture was continually stirred at 450 ° F ( 232 ° C ) until it no longer frothed . All compositions were made and are reported on a weight - percent basis . The saturated felts , cut into 9- X 12 - in sheets , were heated in an air ...
Page 7
TABLE 5. Failure criteria Specimen type Criterion of failure Smooth - surface , felt base Spalls in 25 grid areas ( 25 % ) . When a product exposed to the weather no longer performs the function for ...
TABLE 5. Failure criteria Specimen type Criterion of failure Smooth - surface , felt base Spalls in 25 grid areas ( 25 % ) . When a product exposed to the weather no longer performs the function for ...
Page 8
When this movement can no longer cope with the stresses , cracking occurs . These cracks usually run at right angles to the greatest differential movement . In the exposure of the smoothsurface specimens , all early cracking first ...
When this movement can no longer cope with the stresses , cracking occurs . These cracks usually run at right angles to the greatest differential movement . In the exposure of the smoothsurface specimens , all early cracking first ...
Page 9
The higher concentrations again produced the best performers and the thicker films lasted longer than the corresponding thinner ones . Most of the Mid - Continent coatings with fly ( 8 ) 1.1 x 10-5 ( - 34 ) - ( - 1 ) 1 ( 9 ) 2.4 x 10-5 ...
The higher concentrations again produced the best performers and the thicker films lasted longer than the corresponding thinner ones . Most of the Mid - Continent coatings with fly ( 8 ) 1.1 x 10-5 ( - 34 ) - ( - 1 ) 1 ( 9 ) 2.4 x 10-5 ...
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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 |