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Scientific Paper

Evaluation of recovery rate of porous asphalt binder using MSCR test method

MSCR 실험법을 이용한 배수성 포장 아스팔트 바인더의 회복률 평가

Sung Jin Lee1
,
Jong Sub Lee2*
이 성진1
,
이 종섭2*
1Post-doctoral Researcher (Ph.D.), Korea Expressway Corporation, Pavement R&D Division
2Senior Researcher (Ph.D.), Korea Expressway Corporation, Pavement R&D Division
1한국도로공사 도로교통연구원 포장연구실 박사후연구원
2한국도로공사 도로교통연구원 포장연구실 책임연구원
* Corresponding Author
30 June 2020. pp. 75-82
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Abstract

The object of this study is to evaluate the rutting resistance and recovery rate characteristics of a high-performance modified asphalt binder with the MSCR test method, which is known to be able to check the properties of the asphalt binder in detail. A study was conducted on eight types of asphalt binders of PG82-22, PG82-28, and PG82-34 grades used in porous pavement in Korea. The rutting resistance of the modified asphalt binders currently in use has a non-recovery creep coefficient (Jnr) of 0.3 or less, which meets criterion used in AI. The range of elastic recovery (%Recovery) was evaluated to have more than 60% for PG82-22 and more than 85% for PG82-28 and PG82-34. Thus, it was found that the parameter of elastic recovery can be used as an QC/QA of polymer modified performance graded binders in production.

Keywords
MSCR
Recovery rate
Rutting resistance
Elastic recovery
References
1
AASHTO (2016). M 332-14 ; Performance-graded asphalt binder using Multiple Stress Creep Recovery (MSCR) test, American Association of State Highway and Transportation Officials.
2
AASHTO (2016). T 350-14 ; Multiple Stress Creep Recovery (MSCR) test of asphalt binder using a Dynamic Shear Rheometer (DSR), American Association of State Highway and Transportation Officials.
3
Anderson, M. (2014). "Introduction to the Multiple-Stress Creep-Recovery (MSCR) test and its use in the PG binder specification", 54th Annual Idaho Asphalt Conference, Moscow, Idaho.
4
ASTM D7405-20 (2020), Standard test method for Multiple Stress Creep and Recovery (MSCR) of asphalt binder using a dynamic shear rheometer, ASTM International, West Conshohocken, PA.
5
Cha, S.M. (2018). "MSCR new binder specification advantages and comparative analysis with PG binder specifications", Journal of Korean Society of Road Engineers, 20(4), pp. 43-51
6
FHWA (2011). FHWA-HIF-11-038: The Multiple Stress Creep Recovery (MSCR) procedure, TechBrief.
7
Lee, S.J., Kwon, O.S. and Lee, J.S. (2019). "Evaluation of plastic deformation and elastic recovery rate of modified asphalt binder using MSCR test", Conference, Korean Society of Road Engineers, pp. 5
8
Singh, D. and Sawant, D. (2016). "Understanding effects of RAP on rheological performance and chemical composition of SBS modified binder using series of laboratory tests", International Journal of Pavement Research and Technology, 9(3), pp. 178-189.
10.1016/j.ijprt.2016.06.002
Information
  • Publisher :KOREAN ASPHALT INSTITUTE
  • Publisher(Ko) :한국아스팔트학회
  • Journal Title :Journal of the Korean Asphalt Institute
  • Journal Title(Ko) :한국아스팔트학회지
  • Volume : 10
  • No :1
  • Pages :75-82
  • Received Date : 2020-06-01
  • Revised Date : 2020-06-15
  • Accepted Date : 2020-06-23
  • DOI :https://doi.org/10.22702/jkai.2020.10.1.007
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