The influence of mineral aggregates on bitumen ageing

Jiantao Wu, Weipeng Han, Gordon Airey, Nur Izzi Md Yusoff

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A typical basic aggregate (limestone) and a typical acidic aggregate (granite) were mixed with a 100/150 penetration grade bitumen and its 'short-term' aged equivalent to produce four different 28mm dense bitumen macadam (DBM) asphalt mixtures. Subsets of the four asphalt mixtures were also subjected to the SHRP short- and long-term ageing protocols to further age the different mixtures. The ageing properties of these asphalt mixtures, together with their recovered binders, were tested at the different ageing stages using stiffness modulus (ITSM) and complex modulus (DSR) tests respectively. The results from the ITSM and DSR tests were used to indirectly and directly assess the influence of mineral aggregates on bitumen ageing (short-term initial and long-term extended). The testing results show that both the binder and aggregate types can significantly affect the ageing properties of bituminous materials. In addition, it is found that the mineral aggregate can also influence the proportion of ageing amount at different ageing stages.

Original languageEnglish
Pages (from-to)115-123
Number of pages9
JournalInternational Journal of Pavement Research and Technology
Volume7
Issue number2
DOIs
Publication statusPublished - 2014

Fingerprint

Minerals
Aging of materials
Asphalt mixtures
Binders
Bituminous materials
Granite
Limestone
Stiffness
Testing

Keywords

  • Ageing
  • Bitumen
  • DSR
  • ITSM
  • Mineral aggregate
  • Oxidation
  • Stiffness

ASJC Scopus subject areas

  • Mechanics of Materials
  • Civil and Structural Engineering

Cite this

The influence of mineral aggregates on bitumen ageing. / Wu, Jiantao; Han, Weipeng; Airey, Gordon; Md Yusoff, Nur Izzi.

In: International Journal of Pavement Research and Technology, Vol. 7, No. 2, 2014, p. 115-123.

Research output: Contribution to journalArticle

Wu, Jiantao ; Han, Weipeng ; Airey, Gordon ; Md Yusoff, Nur Izzi. / The influence of mineral aggregates on bitumen ageing. In: International Journal of Pavement Research and Technology. 2014 ; Vol. 7, No. 2. pp. 115-123.
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