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Four methods for predicting durability of roofing asphalts
Four laboratory procedures (asphaltene content, filtration time, solubility parameter, and carbonyl index) for predicting durability of 24 coating-grade roofing asphalts as determined in accelerated-weathering machines were studied; durability tended to vary directly with filtration time, and inversely with solubility parameter, asphaltene content, and carbonyl index; there was scatter in data in all of correlations, but asphalts tended to be grouped according to source of crudes from which they were obtained.
Four methods for predicting durability of roofing asphalts
Four laboratory procedures (asphaltene content, filtration time, solubility parameter, and carbonyl index) for predicting durability of 24 coating-grade roofing asphalts as determined in accelerated-weathering machines were studied; durability tended to vary directly with filtration time, and inversely with solubility parameter, asphaltene content, and carbonyl index; there was scatter in data in all of correlations, but asphalts tended to be grouped according to source of crudes from which they were obtained.
Four methods for predicting durability of roofing asphalts
Matls Research Standards
Greenfield, S.H. (author) / Wright, J.R. (author)
1962
8 pages
Article (Journal)
English
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