Evaluation of low-temperature binder properties of warm-mix asphalt, extracted and recovered rap and ras, and bioasphalt

Zhanping You, Julian Mills-Beale, Elham Fini, Shu Wei Goh, Baron Colbert

Research output: Contribution to journalArticle

81 Citations (Scopus)

Abstract

This research project evaluates the low-temperature performance of energy-efficient and environmentally friendly hot-mix asphalt (HMA) paving materials. Innovative materials gaining interest in the asphalt pavement industry includes warm mix asphalt (WMA), recycled asphalt shingle (RAS), reclaimed asphalt pavement (RAP), and bioasphalt. The materials are used as modifiers in typical HMA to enhance low-temperature field performances. Sasobit compounds at 0.5, 1.0, and 1.5%, by weight of performance grade (PG) 52-34 asphalt binder, are used to design the WMA. Five and 10% of RAS were also added to a PG 52-34 asphalt binder. 50% of RAP combined with 50% of the base PG 58-28 binder, and 100% RAP extracted from the PG 58-28 HMA, were prepared and tested. Bioasphalt was produced from swine waste and used to modify PG 64-22 asphalt binder. By using the Superpave bending beam rheometer (BBR) and the new asphalt binder cracking device (ABCD) method, the thermal cracking performance of the samples were tested. The results showed that (1) the ABCD method can be used alongside or as a confirmation test for the BBR in evaluating the low-temperature cracking resistance behavior of asphalt binders; (2) adding WMA beyond a certain percentage could potentially reduce the low-temperature cracking performance of asphalt binders; and (3) swine waste bioasphalt can enhance low-temperature asphalt binder performance.

Original languageEnglish (US)
Pages (from-to)1569-1574
Number of pages6
JournalJournal of Materials in Civil Engineering
Volume23
Issue number11
DOIs
StatePublished - Dec 16 2011
Externally publishedYes

Fingerprint

asphalt
Asphalt
Binders
Temperature
Asphalt pavements
Rheometers

Keywords

  • Asphalt binder cracking device (ABCD)
  • Bending beam rheometer (BBR)
  • Bioasphalt
  • Reclaimed asphalt pavement (RAP)
  • Recycled asphalt shingles (RAS)
  • Superpave
  • Warm mix asphalt (WMA)

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science(all)
  • Mechanics of Materials

Cite this

Evaluation of low-temperature binder properties of warm-mix asphalt, extracted and recovered rap and ras, and bioasphalt. / You, Zhanping; Mills-Beale, Julian; Fini, Elham; Goh, Shu Wei; Colbert, Baron.

In: Journal of Materials in Civil Engineering, Vol. 23, No. 11, 16.12.2011, p. 1569-1574.

Research output: Contribution to journalArticle

You, Zhanping ; Mills-Beale, Julian ; Fini, Elham ; Goh, Shu Wei ; Colbert, Baron. / Evaluation of low-temperature binder properties of warm-mix asphalt, extracted and recovered rap and ras, and bioasphalt. In: Journal of Materials in Civil Engineering. 2011 ; Vol. 23, No. 11. pp. 1569-1574.
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