Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
From inside the book
Page 6
The numbers of squares with cracks and spalled coating were counted and recorded during each inspection . Inspections were made every three months during the ... Only failures by cracking were recorded for this type of specimens . 3.1 .
The numbers of squares with cracks and spalled coating were counted and recorded during each inspection . Inspections were made every three months during the ... Only failures by cracking were recorded for this type of specimens . 3.1 .
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 ... generally more granules will be lost , more cracking will occur and , finally , the coatings will spall off the ...
About a quarter of the specimens had cracks in 5 percent of their surface areas ( five grid areas ) after 12 and a half ... generally more granules will be lost , more cracking will occur and , finally , the coatings will spall off the ...
Page 8
1 25 % Cracked 50 % Cracked Initial Spall 25 % Spalled Coating description 50 % Spalled - Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 35 71 101 49 104 139 1.0 2.1 2.8 55 116 145 1.0 2.1 2.6 174 California Asphalt .
1 25 % Cracked 50 % Cracked Initial Spall 25 % Spalled Coating description 50 % Spalled - Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 35 71 101 49 104 139 1.0 2.1 2.8 55 116 145 1.0 2.1 2.6 174 California Asphalt .
Page 9
25 % Cracked 50 % Cracked Initial Spall 25 % Spalled 50 % Spalled Coating description Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 10 1.0 10 25 58 1.0 2.5 1.0 2.0 80 136 T 1.0 1.7 21 95 т 5.8 2.5 + 60 % 38 121 11 26 ...
25 % Cracked 50 % Cracked Initial Spall 25 % Spalled 50 % Spalled Coating description Months Ratio Months Ratio Months Ratio Months Ratio Months Ratio 10 1.0 10 25 58 1.0 2.5 1.0 2.0 80 136 T 1.0 1.7 21 95 т 5.8 2.5 + 60 % 38 121 11 26 ...
Page 10
The unstabilized asphalt coatings show noticeable losses of granules and cracking of the coatings . Cracking of the coatings is also evident in the California coatings containing clay . However , all of the granule - surfaced specimens ...
The unstabilized asphalt coatings show noticeable losses of granules and cracking of the coatings . Cracking of the coatings is also evident in the California coatings containing clay . However , all of the granule - surfaced specimens ...
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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 concentrations consists containing corresponding cracking criteria deterioration differences direction divisions doctor bar Dolomite durability early effects embedding Evaluation exposed exposure failed failure felt-base specimens FIGURE Fly Ash Government granule-surfaced specimens granules heated industry instances 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 panel passed performances physical prepared produced progressed Properties provides Ratio Months Ratio reference reported Research rolls roofing saturated felt sheets shingle Silica smooth smooth-surface smooth-surface specimens spalling surface technical Technology temperature tests three asphalts Venezuela asphalt Washington weather weatherometer tests wide
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 |