Evaluation of aging in asphalt cores at room temperature using low field nuclear magnetic resonance

Ilaria Menapace, E. Masad, G. Papavassiliou, E. Kassem

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)

Abstract

In this paper, an innovative methodology that estimates the relative aging of asphalt cores is introduced. Asphalt concrete samples with different porosities (4, 7, and 10 percent) and aging conditions (unaged, 3-month, and 6-month aged) were investigated with Low Field Nuclear Magnetic Resonance (NMR) at room temperature. Unaged samples and samples with 4 percent air voids showed the highest amplitudes in the T2 distributions, which correspond to the lowest viscosities, which imply a lower aging extent. The results were as expected, since oxidation reactions increase the viscosity and a higher percent air voids facilitates oxygen access. The advantage of the Low Field NMR analysis of aging compared to traditional methods is that it does not require binder extraction and is more accurate than analyses relying on mechanical measurements. Therefore, this method could be applied to assess aging of pavements throughout their life.

Original languageEnglish
Title of host publicationBituminous Mixtures and Pavements VI - Proceedings of the 6th International Conference on Bituminous Mixtures and Pavements, ICONFBMP 2015
PublisherCRC Press/Balkema
Pages395-400
Number of pages6
ISBN (Print)9781138028661
Publication statusPublished - 2015
Event6th International Conference on Bituminous Mixtures and Pavements, ICONFBMP 2015 - Thessaloniki, Greece
Duration: 10 Jun 201512 Jun 2015

Other

Other6th International Conference on Bituminous Mixtures and Pavements, ICONFBMP 2015
CountryGreece
CityThessaloniki
Period10/6/1512/6/15

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Menapace, I., Masad, E., Papavassiliou, G., & Kassem, E. (2015). Evaluation of aging in asphalt cores at room temperature using low field nuclear magnetic resonance. In Bituminous Mixtures and Pavements VI - Proceedings of the 6th International Conference on Bituminous Mixtures and Pavements, ICONFBMP 2015 (pp. 395-400). CRC Press/Balkema.