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NRC Publications Archive Archives des publications du CNRCThis publication could be one of several versions: author's original, accepted manuscript or the publisher's version. / La version de cette publication peut être l'une des suivantes : la version prépublication de l'auteur, la version acceptée du manuscrit ou la version de l'éditeur. Thermochimica Acta, 436, 1-2, pp. 35-42, 2005-10-01 Solventless fingerprinting of bituminous materials: a high-resolution thermogravimetric method Masson, J-F.; Bundalo-Perc, S.
AbstractThe thermogravimetric analysis (TGA) of bituminous materials by means of a constant heat rate is often plagued by low resolution and poor reproducibility of the degradation or mass loss temperatures. The TGA curve, or the associated differential TGA (DTGA) signal, is thus an unreliable quality control or quality assurance (QC/QA) method. A 2-and 3-step high-resolution TGA/DTGA method was developed for these materials for analysis between 150°C and 800°C. The DTGA results, obtained within 2h, show about ten discrete mass peaks, the profile being material dependant. The reproducibility of the results indicate that the methods may be used for rapid QC/QA and material fingerprinting. The development of the method is detailed and its application is illustrated with the analysis of several bitumens and polymer-modified bituminous sealants.