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An Algorithm to Estimate Rational Values of Phase Angles and Moduli of Asphalt Mixtures
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.
Department of Civil Engineering Indian Institute of Technology Kharagpur .
Swedish National Road and Transport Research Institute, Infrastructure, Pavement Technology.
2013 (English)In: International Journal of Pavement Research and Technology (IJPRT), ISSN ISSN 1997-1400, Vol. 6, no 6, 745-754 p.Article in journal (Refereed) Published
Abstract [en]

The objective of this study was to develop and evaluate an algorithm based on Fast Fourier Transform (FFT) that can calculate rational values of phase angle (f) and moduli of the variants of asphalt mixtures for the data obtained from the different frequency sweep tests. f and moduli for ten different asphalt mixtures resulting in over 690 data points collected from both USA and Sweden were computed using FFT. Theoretical observations revealed that there were significant differences for f between FFT and other methods to the order of 10-50%; however, there was no difference in moduli estimates for any mix and was independent of the test. Precisely, the FFT method produced rational f for mixtures that deviate from conventional mixture properties. Furthermore, statistical comparisons corroborated the predicted f estimates indicative of significant differences between the analysis techniques; but, the moduli were unaffected by the analysis methods. The study successfully illustrated the FFT technique, a user-friendly analytical procedure that can obviate the errors in the rational estimation of the acutely sensitive viscoelastic parameters.

Place, publisher, year, edition, pages
Taiwan: Copyright @ Chinese Society of Pavement Engineering , 2013. Vol. 6, no 6, 745-754 p.
Keyword [en]
Bituminous mixture, Calculation, Method
National Category
Infrastructure Engineering
Research subject
Road: Materials, Road: Bituminous materials and binders
Identifiers
URN: urn:nbn:se:vti:diva-6938DOI: 10.6135/ijprt.org.tw/2013.6(6).745OAI: oai:DiVA.org:vti-6938DiVA: diva2:734476
Available from: 2014-07-17 Created: 2014-07-17 Last updated: 2014-08-21Bibliographically approved

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Publisher's full texthttp://www.ijprt.org.tw/reader/pdf.php?id=369

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Ahmed, Abubeker W.Hakim, Hassan
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CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf