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“GENERAL ISSUES IN ASPHALT TECHNOLOGY” 2006 Meeting of TRB Committee AFK10

“GENERAL ISSUES IN ASPHALT TECHNOLOGY” 2006 Meeting of TRB Committee AFK10. RENAISSANCE AIRPORT HOTEL PHILADELPHIA, PENNSYLVANIA APRIL 24 -26, 2006. REGIONAL ISSUES & TOPICS PENNDOT PERSPECTIVE. BITUMINOUS TESTING ENGINEER DEAN A. MAURER P.E. GENERAL.

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“GENERAL ISSUES IN ASPHALT TECHNOLOGY” 2006 Meeting of TRB Committee AFK10

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  1. “GENERAL ISSUES IN ASPHALT TECHNOLOGY”2006 Meeting of TRB Committee AFK10 RENAISSANCE AIRPORT HOTEL PHILADELPHIA, PENNSYLVANIA APRIL 24 -26, 2006

  2. REGIONAL ISSUES & TOPICS PENNDOT PERSPECTIVE BITUMINOUS TESTING ENGINEER DEAN A. MAURER P.E.

  3. GENERAL • A.P.Q.I.T.F. * PENNDOT CENTRAL & DISTRICT * FHWA DIVISION * P.A.P.A.

  4. RECYCLING • HIGHER % R.A.P. * L.T. AGING >> ++ VOLUMETRIC ANALYSIS, T283, F.T. / Binder Ratio • WASTE RECYCLABLES(TIRES/SHINGLES) * CRM – 12.5mm SMA/4.75mm SMA / 12.5mm SUPERPAVE (Vestenamer) * RECYCLED ASPHALT SHINGLES(RAS) POST-MANUFACTURE VS. CONSUMER

  5. BINDER MODIFICATION& TEST PROCEDURES • ACID MODIFICATION (P.P.A.) • ELASTIC RECOVERY (E.R.) VS. MULTIPLE STRESS CREEP RECOVERY TEST (MSCR) • INTERMEDIATE TEMPERATURE TEST (DURABILITY VS. FATIQUE) • RELY ON E.T.G. GUIDANCE

  6. CONSTRUCTION SPECs(PAV’T ACCEPTANCE/PERFORMANCE) • WHAT TESTS?/ HOW MANY?/ BY WHO? • PWL VS. LOCAL ACCEPTANCE • WARRANTIES ? (SHORT-TERM ONLY) • INTELLIGENT COMPACTION (P.F. 954) • LONGITUDINAL JOINT PERFORMANCE • SMA vs. SUPERPAVE > 30million ESALs • WARM–MIX ? (WATCH & WAIT)

  7. LAB MIX PERFORMANCE EVALUATION • DURABILITY EVALUATION *Tensile Strength & Permeability *VARIABLES (AGING, MOISTURECONDITIONING, TEMPERATURE, VOIDS, CYCLING) • RUTTING not PRIMARY FAILURE MODE *SIMPLER and LESSCOSTLY

  8. THANK YOU !QUESTIONS ?

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