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Bitumen / filler interactions Current understanding and perspectives Didier Lesueur  -  [email_address] Chemo-Mechanics of Bituminous Materials – Washington DC – Jan. 10th, 2010
Content ,[object Object],[object Object],[object Object],[object Object]
Content ,[object Object],[object Object],[object Object],[object Object]
Definitions ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Particle sizes of typical mineral fillers W: Limestone  D: Dolomite M: Melaphyre  B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009 CAL M D B W
Dry compacted porosity of mineral fillers (Rigden air voids  - EN 1097-4) L: Limestone  D: Dolomite M: Melaphyre  B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009
Content ,[object Object],[object Object],[object Object],[object Object]
Stiffening effect measured by  delta Ring&Ball  (EN 13179-1) L: Limestone  D: Dolomite M: Melaphyre  B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009 CAL: too stiff to measure!!
Stiffening effect correlated with Rigden air voids from Vansteenkiste + Vanelstraete, AAPT, 2008 L D M B
The stiffening effect of mineral filler: A volume fraction effect ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The stiffening effect of mineral filler: The Einstein equation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The stiffening effect of mineral filler ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
The stiffening effect of mineral filler from Quemada, Rheol. Acta 16, 1977 linear (Einstein) maximum packing
The stiffening effect of mineral filler from Heukelom + Wijga, AAPT, 1971 ,[object Object],[object Object],[object Object],[object Object]
The stiffening effect of various fillers from Lesueur, Adv. Colloid Interface Sci. 145, 2009 [  ] above the usual 2.5-5 value
Content ,[object Object],[object Object],[object Object],[object Object]
Why do fillers have these intrinsic viscosities? Table data from Landau + Lifschitz, Fluid Mechanics, 1958 ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],a b
Why do hydrated lime stiffen more than mineral fillers? ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],Why do hydrated lime behave differently than usual mineral fillers? mineral filler hydrated lime 35% air voids 65% air voids
What is the effect of particle size? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
What is the effect of particle size? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Content ,[object Object],[object Object],[object Object],[object Object]
Conclusions and perspectives:  Summary ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Conclusions and perspectives:  Research needs ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Thank you for your attention

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Bitumen / Filler Interactions

  • 1. Bitumen / filler interactions Current understanding and perspectives Didier Lesueur - [email_address] Chemo-Mechanics of Bituminous Materials – Washington DC – Jan. 10th, 2010
  • 2.
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  • 5. Particle sizes of typical mineral fillers W: Limestone D: Dolomite M: Melaphyre B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009 CAL M D B W
  • 6. Dry compacted porosity of mineral fillers (Rigden air voids - EN 1097-4) L: Limestone D: Dolomite M: Melaphyre B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009
  • 7.
  • 8. Stiffening effect measured by delta Ring&Ball (EN 13179-1) L: Limestone D: Dolomite M: Melaphyre B: Basalt CAL: Hydrated Lime from Grabowski et al., Proc. Mairepav6, 2009 CAL: too stiff to measure!!
  • 9. Stiffening effect correlated with Rigden air voids from Vansteenkiste + Vanelstraete, AAPT, 2008 L D M B
  • 10.
  • 11.
  • 12.
  • 13. The stiffening effect of mineral filler from Quemada, Rheol. Acta 16, 1977 linear (Einstein) maximum packing
  • 14.
  • 15. The stiffening effect of various fillers from Lesueur, Adv. Colloid Interface Sci. 145, 2009 [  ] above the usual 2.5-5 value
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  • 25. Thank you for your attention