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Using Black Space Diagrams to Predict Age-Induced Cracking

  • Gayle King
  • Mike Anderson
  • Doug Hanson
  • Phil Blankenship
Part of the RILEM Bookseries book series (RILEM, volume 4)

Abstract

Asphalt aging is typically monitored through rheological changes at high pavement temperatures. Asphalt quality in laboratory aging experiments is then ranked using classic measures such as absolute viscosity ratios or changes in ring and ball softening point. However, this study [1,2] suggests that location on Black Space Diagrams at lower pavement temparatures is a better predictor for block cracking and related failure mechanisms associated with highly oxidized asphalt.

Three unmodified asphalts were PAV aged for 20, 40, and 80 hours. Modulus and phase angle were determined using DSR for intermediate temperatures, while stiffness and m-values using BBR were measured at low temperatures. Proposed aging functions such as Glover-Rowe’s Damage Parameter and Anderson’s R-value were compared to lab results on Black Space Diagrams. The key finding from the binder phase of this study is that location in Black Space is an important performance measure for cracking. However, the initial quality of the asphalt as determined in Black Space is just as important to performance as rheological changes in modulus and phase angle occurring during aging.

Aged mixtures were then tested in the BBR to determine whether binder aging trends would translate to mixture properties. One surprising finding was that microdamage forms in unconfined, highly aged mixture specimens as they cool. Findings from this study suggest that environmental effects models and timing strategies for pavement preservation should be revised to consider binder properties in Black Space, where both the initial asphalt quality and the effects of oxidation on key physical properties can be monitored. A new approach links initial binder quality with oxidative aging to propose a non-load induced cracking parameter for performance-related specifications.

Keywords

Damage Zone Asphalt Mixture Dynamic Shear Rheometer Rheological Change Aged Mixture 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

  1. 1.
    Hanson, D.I., Blankenship, P.B., King, G.N., Anderson, R.M.: Techniques for Prevention and Remediation of Non-Load-Related Distresses on HMA Airport Pavements – Phase II, Final Report, Airfield Asphalt Pavement Technology Program, Project 06-01 (2010)Google Scholar
  2. 2.
    Anderson, R.M., King, G.N., Hanson, D.I., Blankenship, P.B.: AAPT 80, 615 (2011)Google Scholar
  3. 3.
    Domke, C.H.: Asphalt Compositional Effects on Physical and Chemical Properties, Dissertation submitted to Texas A&M University (1999)Google Scholar
  4. 4.
    Glover, C.J., Davison, R.R., Domke, C.H., Ruan, Y., Juristyarini, P., Knorr, D.B., Jung, S.H.: Development of a New Method for Assessing Asphalt Binder Durability with Field Evaluation, Federal Highway Administration and Texas Department of Transportation, Report # FHWA/TX-05/1872-2 (2005)Google Scholar
  5. 5.
    Knorr Jr., D.B., Davison, R.R., Glover, C.J.: Transp. Res. Rec. 1810, 9–16 (2002); reprinted from this publication with permission from TRBGoogle Scholar
  6. 6.
    See citation #4Google Scholar
  7. 7.
    Kandhal, P.S.: ASTM STP 628: Low-Temperature Properties of Bituminous Materials and Compacted Bituminous Paving Mixtures. In: Marek, C.R. (ed.), American Society for Testing and Materials, Philadelphia, PA (1977)Google Scholar
  8. 8.
    See citation #2Google Scholar
  9. 9.
    Rowe, G.M.: Prepared Discussion following the Anderson AAPT paper cited previously. AAPT 80, 649–662 (2011)Google Scholar
  10. 10.
    See citation #2Google Scholar
  11. 11.
    Zofka, A., Marasteanu, M., Clyne, T., Li, X., Hoffmann, O.: Development of a Simple Asphalt Test for Determination of Asphalt Blending Charts. MNDOT report MN/RC 2004-44 (2004)Google Scholar

Copyright information

© RILEM 2012 2012

Authors and Affiliations

  • Gayle King
    • 1
  • Mike Anderson
    • 2
  • Doug Hanson
    • 3
  • Phil Blankenship
    • 2
  1. 1.GHK, Inc.HoustonUSA
  2. 2.Asphalt InstituteLexingtonUSA
  3. 3.AMECTempeUSA

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