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Scientific Paper

Mechanical Performance Evaluation of Reclaimed Asphalt Mixture (RAP) under Static and Dynamic Condition
Ki Hoon Moon1*
,
Oh Sun Kwon2
,
1Senior Researcher, Ph.D., Korea Expressway Corporation (KEC) Pavement Research Division
* Corresponding Author
31 December 2018. pp. 116-128
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Abstract

The use of recycled materials in asphalt pavement is common and crucial practice due to economic and environmental benefits. During the past decades, many research agencies and road authorities have evaluated the impact of adding Reclaimed Asphalt Pavement (RAP) on the field performance of asphalt mixtures. In this study the effect of RAP on the low temperature properties of asphalt mixture is investigated with two different experimental approaches: Bending Beam Rheometer (BBR) mixture creep tests, which are based on static loading, and Dynamic Shear Rheometer (DSR) mixture complex modulus tests, which use dynamic loading. Based on tests results, creep stiffness, thermal stress and complex modulus are derived then compared. The results present that most of the mixtures prepared with RAP have relatively inferior performance compared to virgin mixtures. However, no significant differences in creep stiffness and complex modulus properties are observed beyond a specific RAP amount; this is in the range of 25% to 40%.

Keywords
Reclaimed asphalt pavement
Bending Beam Rheometer (BBR)
Dynamic Shear Rheometer (DSR)
Low temperature performance
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Information
  • Publisher :KOREAN ASPHALT INSTITUTE
  • Publisher(Ko) :한국아스팔트학회
  • Journal Title :Journal of the Korean Asphalt Institute
  • Journal Title(Ko) :한국아스팔트학회지
  • Volume : 8
  • No :2
  • Pages :116-128
  • Received Date : 2018-12-22
  • Accepted Date : 2018-12-27
  • DOI :https://doi.org/10.22702/jkai.2018.8.2.011
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