Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic Felt |
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Page 1
Of the smoothsurfaced specimens , the Mid - Continent asphalt performed the best and the California asphalt the poorest . The mica and blue black slate increased the durabilities of all three asphalts at all concentrations and two ...
Of the smoothsurfaced specimens , the Mid - Continent asphalt performed the best and the California asphalt the poorest . The mica and blue black slate increased the durabilities of all three asphalts at all concentrations and two ...
Page 4
Characteristics of unstabilized asphalt coatings used as controls Asphalt California Mid - continent Venezuela Test ° F ( ° C ) 0.1 mm 0.1 mm 0.1 mm . Softening point ! Penetration at 32 ° F ( 0 ° C ) ? Penetration at 77 ° F ( 25 ° C ) ...
Characteristics of unstabilized asphalt coatings used as controls Asphalt California Mid - continent Venezuela Test ° F ( ° C ) 0.1 mm 0.1 mm 0.1 mm . Softening point ! Penetration at 32 ° F ( 0 ° C ) ? Penetration at 77 ° F ( 25 ° C ) ...
Page 5
Percent of felt weight Percent of kerosene capacity pre177 California asphalt Mid - Continent asphalt Venezuela asphalt 93 96 183 187 98 i Burette method ARIB No. 2.125 , April 1954 , ? 1 lb = 0.45 kg ( approx ) . d .
Percent of felt weight Percent of kerosene capacity pre177 California asphalt Mid - Continent asphalt Venezuela asphalt 93 96 183 187 98 i Burette method ARIB No. 2.125 , April 1954 , ? 1 lb = 0.45 kg ( approx ) . d .
Page 7
These were principally around the edges , but in some of the specimens made with Mid - Continent and Venezuela asphalt , blisters appeared well within the areas inspected . Only a very few specimens made with California asphalt had any ...
These were principally around the edges , but in some of the specimens made with Mid - Continent and Venezuela asphalt , blisters appeared well within the areas inspected . Only a very few specimens made with California asphalt had any ...
Page 8
... 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 . ... 1.2 1.3 1.4 80 Mid - Continent Isphalt + 35 % BBS + 50 % BBS + 60 % BBS + 35 % Clay + 50 % Clay + 35 % Dolomite .
... 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 . ... 1.2 1.3 1.4 80 Mid - Continent Isphalt + 35 % BBS + 50 % BBS + 60 % BBS + 35 % Clay + 50 % Clay + 35 % Dolomite .
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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