Rational modeling of tertiary flow for asphalt mixtures

Krishna P. Biligiri, Kamil Kaloush, Michael Mamlouk, Matthew W. Witczak

Research output: Chapter in Book/Report/Conference proceedingChapter

70 Citations (Scopus)

Abstract

The objective of this research study was to evaluate several mathematical models to be used in calculating the onset of tertiary flow [referred to as the flow number (FN) parameter] for asphalt mixtures. The FN indicates the onset of shear deformation in asphalt mixtures, which is a significant parameter in evaluating rutting in the field. The FN is obtained from the repeated load permanent deformation (RLPD) laboratory test. Current modeling techniques in determining the FN use a polynomial model fitting approach, which works well for most conventional asphalt mixtures. However, analysis and observations on the use of this polynomial model for rubber-modified asphalt mixtures showed problems in identifying the true FN values. The scope of the work included the collection and analysis of more than 300 RLPD test data files, which comprised more than 40 mixtures, a wide range of test temperatures, and several stress levels. A new comprehensive mathematical model was recommended to accurately determine the FN. The results and analysis were evaluated through manual calculations and found to be accurate, rational, and applicable to all mixture types, whether a tertiary stage was reached or not.

Original languageEnglish (US)
Title of host publicationTransportation Research Record
Pages63-72
Number of pages10
Edition2001
DOIs
StatePublished - 2007

Publication series

NameTransportation Research Record
Number2001
ISSN (Print)03611981

Fingerprint

Asphalt mixtures
Mathematical models
Shear deformation
Rubber
Temperature
Statistical Models

ASJC Scopus subject areas

  • Civil and Structural Engineering

Cite this

Biligiri, K. P., Kaloush, K., Mamlouk, M., & Witczak, M. W. (2007). Rational modeling of tertiary flow for asphalt mixtures. In Transportation Research Record (2001 ed., pp. 63-72). (Transportation Research Record; No. 2001). https://doi.org/10.3141/2001-08

Rational modeling of tertiary flow for asphalt mixtures. / Biligiri, Krishna P.; Kaloush, Kamil; Mamlouk, Michael; Witczak, Matthew W.

Transportation Research Record. 2001. ed. 2007. p. 63-72 (Transportation Research Record; No. 2001).

Research output: Chapter in Book/Report/Conference proceedingChapter

Biligiri, KP, Kaloush, K, Mamlouk, M & Witczak, MW 2007, Rational modeling of tertiary flow for asphalt mixtures. in Transportation Research Record. 2001 edn, Transportation Research Record, no. 2001, pp. 63-72. https://doi.org/10.3141/2001-08
Biligiri KP, Kaloush K, Mamlouk M, Witczak MW. Rational modeling of tertiary flow for asphalt mixtures. In Transportation Research Record. 2001 ed. 2007. p. 63-72. (Transportation Research Record; 2001). https://doi.org/10.3141/2001-08
Biligiri, Krishna P. ; Kaloush, Kamil ; Mamlouk, Michael ; Witczak, Matthew W. / Rational modeling of tertiary flow for asphalt mixtures. Transportation Research Record. 2001. ed. 2007. pp. 63-72 (Transportation Research Record; 2001).
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