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Scientific Paper

Relaxation modulus computation of asphalt mixture using simple power law model with IDT (In-Direct Tensile) testing equipment
Ki-Hoon Moon1*
,
Oh Sun Kwon2
,
Sung Jin Lee2
,
Cannone Falchetto Augusto3
1Senior Researcher (Ph.D.), Korea Expressway Corporation Pavement Research Division (KECPRD)
2Post-doctoral researcher (Ph.D.), Korea Expressway Corporation Pavement Research Division (KECPRD)
3Assistant professor (Ph.D.), Technical university Braunschweig: Department of Civil Engineering (ISBS)
* Corresponding Author
30 June 2019. pp. 40-48
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Abstract

Low temperature cracking is one of the crucial distresses on asphalt pavement especially for Northern U.S., Canada and Korea. Normally, this crack pattern presents transverse shape and makes water infiltration into pavement layer easily. Finally, serious distresses such as reveling, pop-out and pot-hole issues emerge which provides negative performances on existing asphalt pavement. It is well known that thermal stress can be computed numerically based on relaxation modulus of asphalt mixture by means of low temperature creep test. However, the inter-conversion approach between creep compliance and relaxation modulus is rather complicated therefore, only few research agencies can compute relaxation modulus and thermal stress of given asphalt materials. In this paper, a simple relaxation modulus computation approach using power law function is introduced. By using this computation approach, it is expected that more pavement research and managing agencies can easily generate relaxation modulus of given asphalt materials (binder and mixture) from creep testing.

Keywords
In-Direct Tensile (IDT) test
Relaxation modulus
Creep compliance
Thermal stress
Power law function
References
1
AASHTO (2003). Determining the creep compliance and strength of Hot Mix Asphalt using the Indirect Tensile Test (IDT) device, AASHTO T322-03, American Association of State Highway and Transportation Officials, Washington D.C.
2
AASHTO (2010). Standard Specification for Performance-Graded Asphalt Binder, AASHOTO M320-10, American Association of State Highway and Transportation Officials, Washington D.C.
3
AASHTO (2012). Determining the Flexural Creep Stiffness of Asphalt Binder Using the Bending Beam Rheometer (BBR), AASHTO T313-12, American Association of State Highway and Transportation Officials, Washington D.C.
4
Cannone Falchetto, A., Marasteanu, M. O., Balmurugan, S. and Negulescu, I. I. (2014) "Investigation of Asphalt Mixture Strength at Low Temperatures with the Bending Beam Rheometer", Road Materials and Pavement Design, Vol. 15, No. 1, pp. 28-44.
10.1080/14680629.2014.926618
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Ferry, J. D. (1980) Viscoelastic properties of polymers 3rd edition, Wiley, New York, N. Y.
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Marasteanu, M. O., Velasquez, R. A., Cannone Falchetto A. and Zofka A. (2009). Development of a Simple Test to Determine the Low Temperature Creep Compliance of Asphalt Mixtures. IDEA Program Final Report, NCHRP-133.
8
Ministry of Land, Infra-structure and Transportation (MOLIT) (2015). Hot Mix Asphalt production, construction and management specification (in Korean).
9
Moon, K. H. (2010) Comparison of thermal stresses calculated from asphalt binder and asphalt mixture creep compliance data, M.S. thesis, University of Minnesota, Twin Cities, U.S.
10
Moon, K. H. (2012) Investigation of asphalt binder and asphalt mixture low temperature properties using analogical models, Ph.D. thesis, University of Minnesota, Twin Cities, U.S.
11
Moon, K. H., Cannone Falchetto, A. and Yeom, W. S. (2014) "Low-Temperature Performance of Asphalt Mixtures Under Static and Oscillatory Loading", Arabian Journal for Science and Engineering, Vol. 39, No. 11, pp. 7577-7590.
10.1007/s13369-014-1321-2
12
Moon, K. H., Kwon O. S., Cho M. J. and Cannone Falchetto A. (2019) "An alternative one-step computation approach for computing thermal stress of asphalt mixture: the Laplace transform." Journal of Korean Society of Civil Engineers, 39(1), pp 219-225.
13
Park, S. W. and Kim, Y. R. (1999) "Interconversion between Relaxation Modulus and Creep Compliance for Viscoelastic Solids", Journal of Materials in Civil Engineering, ASCE, Vol. 11, No. 1, pp. 76-82.
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14
Zhang, W., Drescher, A. and Newcomb, D. E. (1997) "Viscoelastic behavior of asphalt concrete in diametral compression", Journal of Transportation Engineering, Vol. 123, No. 6, pp. 495-502.
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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 : 9
  • No :1
  • Pages :40-48
  • Received Date : 2019-06-21
  • Accepted Date : 2019-06-26
  • DOI :https://doi.org/10.22702/jkai.2019.9.1.003
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