Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
From inside the book
Results 1-5 of 5
Page 6
The numbers of squares with cracks and spalled coating were counted and recorded during each inspection . ... In the felt - base specimens , widely spaced cracks became interlaced with narrower cracks until spalling of the small areas ...
The numbers of squares with cracks and spalled coating were counted and recorded during each inspection . ... In the felt - base specimens , widely spaced cracks became interlaced with narrower cracks until spalling of the small areas ...
Page 7
No spalling of the coatings has been observed in any of these specimens since their exposure in 1952. ... generally more granules will be lost , more cracking will occur and , finally , the coatings will spall off the saturated felts ...
No spalling of the coatings has been observed in any of these specimens since their exposure in 1952. ... generally more granules will be lost , more cracking will occur and , finally , the coatings will spall off the saturated felts ...
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 silica was most beneficial in the California asphalt , for it increased its durability ( 25 percent coating spalled ) as much as 80 percent . In all instances it increased the durability by at least 10 percent .
The silica was most beneficial in the California asphalt , for it increased its durability ( 25 percent coating spalled ) as much as 80 percent . In all instances it increased the durability by at least 10 percent .
What people are saying - Write a review
We haven't found any reviews in the usual places.
Common terms and phrases
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 |