The "false positive" on the antiaging properties of asphalt fines investigated by RTFO laboratory aging of mastics

Michalina Makowska, Terhi Pellinen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

1 Citation (Scopus)

Abstract

To investigate the effect of fines on the aging of bitumen, a set of fourteen different mastics was prepared and aged with a modified Rolling Thin Film Oven Test. The unmodified paving grade bitumen of 70/100 penetration was used. The bitumen was extracted both from the unaged and aged mastic and analyzed with Dynamic Shear Rheometer and Fourier Transform Infrared (FT-IR). The fines were analyzed for the Loss on ignition, as well as by the FT-IR. The extracted bitumen was found to be softer than the original one in some of the blends, implying rejuvenation. However, based on aggregate analysis, the precipitation of bitumen into the aggregate fines during extraction was noticed. Conversely, for some bitumen specimens, the FT-IR spectra revealed the presence of fines, which in many cases convoluted the area of sulfoxides peak. The rejuvenation observed by rheological testing was the effect of extraction artifacts rather than deoxidation.
Original languageEnglish
Title of host publicationFunctional Pavement Design
Subtitle of host publicationProceedings of the 4th Chinese-European Workshop on Functional Pavement Design
EditorsSandra Erkens, Xueyan Lu, Kumar Anupam, Tan Yiqiu
Pages54-54
ISBN (Electronic)9781315643274 , 978-1-317-28552-6
Publication statusPublished - 29 Jun 2016
MoE publication typeA4 Article in a conference publication
EventChinese-European Workshop on Functional Pavement Design - Delft, Netherlands
Duration: 29 Jun 20161 Jul 2016
Conference number: 4

Workshop

WorkshopChinese-European Workshop on Functional Pavement Design
Abbreviated titleCEW
CountryNetherlands
CityDelft
Period29/06/201601/07/2016

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