Natural Weathering of Mineral Stabilized Asphalt Coatings on Organic FeltU.S. National Bureau of Standards, 1969 - 15 pages Sixteen years of outdoor weathering of laboratory-prepared smooth-surface and mineral-surfaced, felt-base roofing specimens has provided information on the effects of mineral additives on the durability of coating-grade roofing asphalts. Six finely divided mineral additives (blue black slate, clay, dolomite, fly ash, mica, and silica) were evaluated at concentrations up to 60 percent in California, Mid Continent and Venezuela asphalts. The mineral-surfaced specimens are all performing satisfactorily, and show only minor degrees of degradation. Of the smooth-surfaced 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 coating thicknesses. Fly ash, clay, dolomite, and silica were beneficial in some combinations, but had little effect in others. In general, these early results from outdoor exposure tend to corroborate the results obtained on these coatings exposed in weatherometers. (Author). |
From inside the book
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... TECHNICAL PAPER No. 5 CITRUS BLAST AND BLACK PIT BY H. S. FAWCETT , W. T. HORNE AND A. F. CAMP UNIVERSITY OF CALIFORNIA PRESS BERKELEY , CALIFORNIA DEC 102 TECHNICAL PAPERS 1. The Removal of Sodium Carbonate from Soils. Front Cover.
... TECHNICAL PAPER No. 5 CITRUS BLAST AND BLACK PIT BY H. S. FAWCETT , W. T. HORNE AND A. F. CAMP UNIVERSITY OF CALIFORNIA PRESS BERKELEY , CALIFORNIA DEC 102 TECHNICAL PAPERS 1. The Removal of Sodium Carbonate from Soils. Front Cover.
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... technical law . A document delivery service , CurrentDoc , is offered for a per document charge . Editorial Staff see page 8 , col . 1 FEDLINK Technical Notes is published by the Federal Library and Information Center Committee . Send ...
... technical law . A document delivery service , CurrentDoc , is offered for a per document charge . Editorial Staff see page 8 , col . 1 FEDLINK Technical Notes is published by the Federal Library and Information Center Committee . Send ...
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... technical coopera- tion to underdeveloped countries was authorized by the " Act for International Development " , ( P.L. 535 , 81st Congress ) approved June 5 , 1950 , and amended under the " Mutual Security Act of 1951 " ( P.L. 165 ...
... technical coopera- tion to underdeveloped countries was authorized by the " Act for International Development " , ( P.L. 535 , 81st Congress ) approved June 5 , 1950 , and amended under the " Mutual Security Act of 1951 " ( P.L. 165 ...
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TECHNICAL BULLETIN No. 209 Copy MARCH , 1933 1 Liorary New Dork State Agricultural Experiment Station Geneva , N. Y. CHROMOSOME NUMBERS IN ANEUPLOID APPLE SEEDLINGS B. R. NEBEL EXCRESION PUBLISHED BY THE STATION UNDER AUTHORITY OF ...
TECHNICAL BULLETIN No. 209 Copy MARCH , 1933 1 Liorary New Dork State Agricultural Experiment Station Geneva , N. Y. CHROMOSOME NUMBERS IN ANEUPLOID APPLE SEEDLINGS B. R. NEBEL EXCRESION PUBLISHED BY THE STATION UNDER AUTHORITY OF ...
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... technical language . It appears that the early bridges were all designed empirically , from experience gained by previous failures and successes . Hooke's law of strain and stress was only enunciated in 1678 , and Euler's formula for ...
... technical language . It appears that the early bridges were all designed empirically , from experience gained by previous failures and successes . Hooke's law of strain and stress was only enunciated in 1678 , and Euler's formula for ...
Common terms and phrases
15 cents 60 percent silica aluminum-base specimens ARIB ASTM method automatic data processing back-coated Black Slate 25 blistering Blue Black Slate Building Science Series Bureau of Standards California asphalt Cement and Concrete Coating composition Thickness Coating thickness Composition Column 1 Column Composition Coating thickness Concrete Properties cracking and spalling doctor bar Dolomite 25 35 embedding rolls felt-base specimens Fly Ash 25 Fly Ash 50 granule-surfaced specimens Greenfeld increased the durability Institute for Applied Interrelations Between Cement Isopropyl alcohol Kraft paper Lake Erie Loss on ignition losses of granules Mica Mid-Continent asphalt mineral additives months of exposure Months Ratio Months National Bureau outdoor exposures performances Portland Cement Ratio Months Ratio saturated felt shingle smooth-surface specimens specimens after 15 specimens exposed outdoors Stabilized Asphalt Coatings straight asphalt surface specimens tabs thickness Composition Coating thickness mils mils three asphalts type of specimen U.S. Government Printing Venezuela asphalt Viscosity weatherometer tests