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Chemical changes occurring during weathering of two coating-grade asphalts
Observations were made on asphalts exposed in accelerated weathering machines; results on asphaltenes, sulphur and nitrogen compounds, degradation products and weight loss are reported; outdoor exposures of same asphalts were of too short duration to produce significant trends, but general results were in agreement with accelerated exposures.
Chemical changes occurring during weathering of two coating-grade asphalts
Observations were made on asphalts exposed in accelerated weathering machines; results on asphaltenes, sulphur and nitrogen compounds, degradation products and weight loss are reported; outdoor exposures of same asphalts were of too short duration to produce significant trends, but general results were in agreement with accelerated exposures.
Chemical changes occurring during weathering of two coating-grade asphalts
US Bur Standards -- J Research -- Eng Instrumentation
Greenfeld, S.H. (author)
1960
12 pages
Standard
English
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