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CALAPA SPRING CONFERENCE

ONTARIO, CA

APRIL 21, 2016

Caltrans – HMA – up to 15%▪ No Fractionation

Caltrans – HMA - >15% <25% Fractionate RAP

Fine RAP = -3/8”

Coarse RAP = +3/8” -1”

May lower PG grade

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– For Binder replacement >25% <40% - Fractionate Must lower PG grade

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<15% RAP – >15% RAP – HMA mixture binder grade must

not be stiffer than the specified PG binder grade.

Use blending charts for high, intermediate and low critical temperatures.

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We are still trying to figure this out. How do we design mixes in advance of actual

shipping. What changes can we make during

production How do we incorporate Rejuvenating agents

and other additives that effect the mix PG.

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Viscosity Testing

Extraction/Recovery

RAP aggregate in Aggregate Blend – 25% JMF AC% TWM – 4.80 RAP AC% TWM – 4.81

Proposed RAP Binder Ratio - .250

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AGING PROPERTY TEMP RANGE Virgin Binder(°C) RAP Binder(°C)

OriginalDSR G*/sin(delta), >1.00 kPa High 69 n/a

RTFODSR G*/sin(delta), >2.20 kPa High 69 96

PAV

DSR G*sin(delta), ≤ 5,000 kPa Intermediate 31 51

BBR Stiffness, "S" ≤ 300MPa Low -10 4

BBR m-value, m ≥ 0.300 Low -10 4

For Low Temp, enter True Grade values which are 10C lower than the test temperature. The plotted low test temp will be 10C higher than the True Grade.

Lowest "High" 69 96

Highest "Low" -10 4

PGActual (True Grade)

PG 69-10 PG 96+4

Equivalent M320 grade PG 64-10

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* Projects Specified Binder Grade =>

PG 64-22

Proposed Virgin Binder Grade =>

PG 64 -10

"HMA Mixture Binder Grade" at Proposed RPBR => PG 75.8-6.5

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RAP Processing

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THANK YOU

Pascal MascarenhasVulcan Materialsmascarenhasp@vmcmail.com626-856-6190 Phone626-969-2918 Fax626-705-6611 Cell

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