University of Illinois Urbana-Champaign

An acoustic emission-based test to evaluate low temperature behavior of asphalt materials

Behnia, Behzad

Content Files
Behzad_Behnia.pdf

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https://hdl.handle.net/2142/45584

Description

Title
An acoustic emission-based test to evaluate low temperature behavior of asphalt materials
Author(s)
Behnia, Behzad
Issue Date
2013-08-22T16:48:39Z
Director of Research (if dissertation) or Advisor (if thesis)
  • Buttlar, William G.
  • Reis, Henrique M.
Doctoral Committee Chair(s)
Buttlar, William G.
Committee Member(s)
  • Reis, Henrique M.
  • Al-Qadi, Imad L.
  • Roesler, Jeffery R.
  • Barnat, James
Department of Study
Civil & Environmental Eng
Discipline
Civil Engineering
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
Ph.D.
Degree Level
Dissertation
Date of Ingest
2013-08-22T16:48:39Z
Keyword(s)
  • Acoustic emission
  • Thermal cracking
  • Asphalt material
  • Non-destructive testing (NDT)
Abstract
Low temperature cracking in asphalt pavements located in cold climates is a major cause of pavement deterioration. Accurate evaluation of low temperature cracking behavior of asphalt materials is necessary in order to design pavements that are resistant to thermally induced cracking. Detrimental effects of low-temperature cracking have motivated a number of studies in an effort to experimentally design and control asphalt properties related to the low temperature performance of asphalt pavements. However, accurate predictions of thermal cracking and associated failure mechanisms still remain a challenge. In the present study, an acoustic emission-based testing method was developed to address the current shortage of a rapid and practical test to evaluate the low temperature cracking performance of asphalt binders and mixtures. The developed testing technique has been successfully implemented to assess several types of asphalt binders and mixtures including: Anti-Oxidant modified asphalt binders, SHRP core asphalt binders, asphalt concrete mixtures containing Reclaimed Asphalt Pavement (RAP) material, Warm Mix Asphalt (WMA) mixtures, Bio-Modified Binders (BMB) mixtures, etc. Results show that this technique is very sensitive to aging level of asphalt materials as well as presence of additives such as WMA additives within binder or mixture. The acoustic emission-based testing method appears to be a viable technique for characterization of low temperature behavior of asphalt materials.
Graduation Semester
2013-08
Permalink
http://hdl.handle.net/2142/45584
Copyright and License Information
Copyright 2013 Behzad Behnia

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