Viscoelastic model to describe mechanical response of bituminous sealants at low temperature

Mostafa A. Elseifi, Samer H. Dessouky, Imad L. Al-Qadi, Shih Hsien Yang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To establish a clear understanding of the behavior of hot-poured bituminous-based crack sealants at low service temperature and to predict their field performance, the constitutive stress-strain relationship must be described. The description of this relationship would allow accurate prediction of crack sealants' field responses to thermal and traffic loading. The objective of this paper is to describe crack sealant constitutive behavior at low temperature by linear viscoelastic modeling (Prony series expansion). The suggested model was fitted to creep measurements obtained from a modified bending beam rheometer test setup. The experimental program included testing of three soft crack sealants having a relatively high level of polymer modification content at a temperature ranging from -28°C to -40°C. A Prony series expansion was fitted to the experimental results. To determine the time-dependent responses of crack sealants to a constant creep load, the fitted material parameters were incorporated into a three-dimensional finite element model. Measured and calculated deflections were in good agreement. This finding suggests that the constitutive behavior of crack sealants can be accurately described by the linear viscoelastic regime at low service temperatures.

Original languageEnglish (US)
Title of host publicationManaging and Maintaining Highway Structures and Pavements
PublisherNational Research Council
Pages82-89
Number of pages8
Edition1958
ISBN (Print)0309099676, 9780309099677
DOIs
StatePublished - Jan 1 2006

Publication series

NameTransportation Research Record
Number1958
ISSN (Print)0361-1981

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Mechanical Engineering

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