Print Email Facebook Twitter Effects of different aging methods on chemical and rheological properties of bitumen Title Effects of different aging methods on chemical and rheological properties of bitumen Author Tarsi, G. (TU Delft Pavement Engineering; University of Bologna) Varveri, Aikaterini (TU Delft Pavement Engineering) Lantieri, Claudio (University of Bologna) Scarpas, Athanasios (TU Delft Pavement Engineering) Sangiorgi, Cesare (University of Bologna) Date 2018 Abstract Bitumen undergoes ageing, which leads to changes in its chemical and rheological properties, causing it to become harder and more brittle with time. This study aims to compare the effects of different laboratory ageing methods on the chemistry and rheology of three bitumen types: a Pen 40=60, a Pen 70=100, and a polymer-modified bitumen (PmB). Four ageing protocols were applied: ageing at room temperature, oven ageing, pressure ageing vessel (PAV), and rolling thin-film oven test (RTFOT) combined with PAVageing. The effects of temperature, pressure, and ageing time were studied using dynamic shear tests and infrared spectroscopy. The results highlight the relationship between chemistry and rheology of bitumen. Bitumen hardening, which was revealed by an increase in complex modulus and a decrease in phase angle, was reflected in the growth of specific chemical functional groups. Among all materials, soft bitumen showed the greater tendency to oxidize. Different behavior was observed for PmB, which presented the highest resistance against oxidation among the studied bitumens, even though the reaction with oxygen caused the deterioration of the added polymer modifiers. Subject AgeingBitumenChemistryFourier transform infrared spectroscopy (FTIR)Rheology To reference this document use: http://resolver.tudelft.nl/uuid:19023db6-59b5-4eab-a633-7d5d77e4e51c DOI https://doi.org/10.1061/(ASCE)MT.1943-5533.0002206 Embargo date 2018-07-06 ISSN 0899-1561 Source Journal of Materials in Civil Engineering, 30 (3) Bibliographical note Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type journal article Rights © 2018 G. Tarsi, Aikaterini Varveri, Claudio Lantieri, Athanasios Scarpas, Cesare Sangiorgi Files PDF MTENG_6015.pdf 784.57 KB PDF _ASCE_MT.1943_5533.0002206.pdf 1.27 MB Close viewer /islandora/object/uuid:19023db6-59b5-4eab-a633-7d5d77e4e51c/datastream/OBJ1/view