keynote address - Australian Asphalt Pavement Association

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EPc*−1⎡ VMA⎡ ⎛ VMA ⎞ * ⎛ VFA × VMA ⎞⎤1 −⎤100VMA= P ⎢4,200,000⎜1− ⎟ + 3 ⎜ ⎟⎥+ (1 − ) ⎢ +⎥cGPbinderc*⎣⎛⎜20+=⎝650⎛⎝VFA×3 G*VMAVFA×3 G+ ⎜ VMA⎝binder*binder⎞⎟⎠0.58⎞⎠1000.58⎠⎝10000001000001000010,000⎠⎦⎢4,200,000⎣St BunnG* Mastercurves Binder vs Mix Tested3VFAGbinder⎥⎦G*, psi10001001010.1-8 -7 -6 -5 -4 -3 -2 -1 0 1 2log(Frequendy, Hz)G* BinderG* MixST BunnG* calculated vs G* testedTorsion1000000100000G*, psi10000100010010G* mix calculatedG* Mix Tested1400 0.5 1 1.5 2 2.5 3 3.5log(Frequency, Hz)
Recommendations on Testing RAP• <strong>Asphalt</strong> content by ignition oven• Solvent extraction for dolomitic i limestones• RAP Aggregate:– Bulk Specific Gravity is the most important• Gmm & Pb→Gse→Gsb– Gradation– Consensus propertiesIgnition oven– Source properties41
Page 6 and 7: Intermediate Mixes: % RAP Allowed0%
Page 8: Asphalt Recycling in the USA• Asp
Page 13 and 14: RubbleRejected MixMultiple Source R
Page 15 and 16: Crushed RAP PileOne-size-fits-all a
Page 17 and 18: Variability of RAPTrue or False?•
Page 19 and 20: ICAR‐401‐1/98Based on stockpile
Page 21 and 22: More Information onRAP Variability
Page 23 and 24: Fractionated vs. non Fractionated23
Page 25 and 26: Barriers to Increasing RAP25
Page 28 and 29: LTPP SPS‐5: RAP vs. Virgin• Fou
Page 33: More Transverse Crackingin Recycled
Page 36 and 37: Barriers to Increasing RAP36
Page 38 and 39: RAP Nomograph‐ High PG Temp.gh Te
Page 42 and 43: NCAT Test Track RAP Study42
Page 44 and 45: No RAPN5-0%RAPPG67-22RAP Sections94
Page 46 and 47: Field Performance46
Page 48 and 49: Performance Observations• Very lo
Page 50 and 51: Limitations of the2006 Test Track R
Page 52 and 53: Supply of RAP• Stable 51%• Decl
Page 54 and 55: How Much RAP Could Be UsedPer rcent
Page 56 and 57: Summary• Many highway agencies ar

keynote address - Australian Asphalt Pavement Association

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