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Abstract
Four different fractions of bitumens (asphaltenes, saturates, naphthenes aromatic and polar aromatics) of differnt origins (Iran, Arabia and Mexico) were characterized by high-performance gel permeation chromatography and differential scanning calorimetry. The three different bitumens were determined to have similar penetration range and adequate chemical composition to be used for waterproofing applications. HP-GPC was used to determine the molecular weights of the various bituminous fractions. The trend in molecular weights for the fraction was, in decreasing order, asphaltene, polar aromatics; saturates and naphthten aromatics. The glass transition temperature and other thermally induced transitions were obtained by DSC. It was also found that the combination of these techniques leads to a better understanding of the properties of the bitumens and assists in developing superior polymer-modified bitumen blends for roofing and waterproofing membranes.
Four different fractions of bitumens (asphaltenes, saturates, naphthenes aromatic and polar aromatics) of differnt origins (Iran, Arabia and Mexico) were characterized by high-performance gel permeation chromatography and differential scanning calorimetry. The three different bitumens were determined to have similar penetration range and adequate chemical composition to be used for waterproofing applications. HP-GPC was used to determine the molecular weights of the various bituminous fractions. The trend in molecular weights for the fraction was, in decreasing order, asphaltene, polar aromatics; saturates and naphthten aromatics. The glass transition temperature and other thermally induced transitions were obtained by DSC. It was also found that the combination of these techniques leads to a better understanding of the properties of the bitumens and assists in developing superior polymer-modified bitumen blends for roofing and waterproofing membranes.
Date
0/1992
0/1992
Author(s)
R Parol; O Dutt; I Rodriguez; M Fernandez
R Parol; O Dutt; I Rodriguez; M Fernandez
Page(s)
420-430
420-430
Keyword(s)
asphaltenes; saturates; naphthenes aromatic; polar aromatic; HP-GPC; gel permeation; differential scanning calorimetry; DSC
asphaltenes; saturates; naphthenes aromatic; polar aromatic; HP-GPC; gel permeation; differential scanning calorimetry; DSC