Ageing Behavior of Porous and Dense Asphalt Mixtures in the Field

Research output: Chapter in Book/Conference proceedings/Edited volumeChapterScientific

Abstract

Bitumen ageing is one of the principal factors causing the deterioration of asphalt pavements. As bitumen ages, the pavement loses its ability to relax stresses during loading/unloading and thermal cooling process, thus the risk of cracking increases. Oxidation and ultraviolet (UV) radiation are believed to be the main factors that can cause bitumen ageing during pavement service life. The aim of this study is to evaluate the mechanical behavior of porous and dense asphalt pavements during field ageing. Pavement test sections were constructed in 2014 and are being exposed to actual environmental conditions since then. To investigate the effect of UV radiation on ageing, UV reflective glass-plates were utilized to cover part of the pavement surface. To study the evolution of the pavements’ mechanical properties, asphalt cores were collected from the test sections periodically (at one-year intervals). The changes in the stiffness modulus of the mixtures were determined via cyclic indirect tensile tests. The results show that the effect of mineral aggregate packing, and hence of air-void distribution and connectivity, on the ageing sensitivity (both thermal and UV ageing sensitivity) of the pavements with time was found to be significant, as the changes of the stiffness of the porous mixtures were greater than that of dense mixtures.

Original languageEnglish
Title of host publicationProceedings of the RILEM International Symposium on Bituminous Materials
EditorsH. Di Benedetto, H. Baaj, E. Chailleux, G. Tebaldi, C. Sauzéat, S. Mangiafico
Place of PublicationCham
PublisherSpringer
Pages191-198
Number of pages8
ISBN (Electronic)978-3-030-46455-4
ISBN (Print)978-3-030-46454-7
DOIs
Publication statusPublished - 2021
EventRILEM International Symposium on Bituminous Materials - Online conference, France
Duration: 14 Dec 202016 Dec 2020
https://isbmlyon2020.sciencesconf.org/

Publication series

NameRILEM Bookseries
Volume27
ISSN (Print)2211-0844
ISSN (Electronic)2211-0852

Conference

ConferenceRILEM International Symposium on Bituminous Materials
Abbreviated titleISBM 2020
CountryFrance
Period14/12/2016/12/20
Internet address

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.

Keywords

  • Dense mixture
  • Field ageing
  • Porous mixture
  • Stiffness
  • UV radiation

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