7 e - what is evotherm + advantages & benefits -mmf evotherm.pdf · add evotherm & reduce...
TRANSCRIPT
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Asphalt InnovationsDominic Barilla & Pete Truncale
PAPA Regional Seminars 2018
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Today’s Agenda
1. Innovation & Asphalt2. Advantages & Benefits of Chemical Warm Mix 3. WMA & Porous Pavement4. Asphalt Recycling Agent Uses5. Q & A Discussion
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“If you have an opportunity to make things better and you don’t, then you are wasting your time on earth.”
~ Roberto Clemente
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Chemical Warm Mix
Surfactant chemistry that improves coating and reduces the viscosity of asphaltic mixtures, allowing placement & compaction at significantly lower production temperatures.
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Recycling Agents
Asphalt recycling agent used to reactivate oxidized RAP/RAS binder and improve blending with virgin binder.
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Combination Products
Precisely proportioned blend of Evotherm & Evoflex designed to 1. Reactivate RAP/RAS binder 2. Improve blending between recycled and virgin asphalt3. Provide better coating & workability 4. Enhance compaction efforts
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Chemical WMA Value
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Chemical WMA Advantages1. Improved Compaction2. Eliminate AC Absorption/Waste3. Liquid Anti-Strip Replacement4. Reduced Thermal Segregation5. LONGER… Hauls, Paving Days, Paving Season6. Reduced Fuel Consumption and Emissions7. Longer Binder Life8. Porous Pavement Applications9. Increased Usage of RAP/RAS with Recycling Agents10. Proven Technology – 130MM+ tons placed
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Improved Compaction
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Reduce Asphalt Absorption
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Reduce Asphalt Absorption
Hot Mix Control
TxDOT Cores After 1 Year
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ReplaceLiquidAnti-Strip
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Reduce Thermal Segregation
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Thermal SegregationAssociated with poor pavement performance…
1. Mix resists adequate compaction even after aggressive rolling
2. Higher permeability's due to lower density
3. Increased binder oxidation
4. Reduced life of the road
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62 Deg Difference
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24 Deg Difference
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Longer Hauls
Longer Season
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Longer… Hauls, Paving Days, Paving Season•Early Start– Getting a jump on the competition
•Late Season– Finishing jobs– Squeezing in extra jobs– Emergency paving
•Longer Day– Starting earlier in the day– Minimizing crew wait times– Increasing production
•Longer Haul– Expanding market reach– Additional bid opportunities– Handles unexpected wait times
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Reduced Fuel Consumption
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Reduced Emissions
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Lower Emissions
Hot Mix
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Increased Binder Life
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Longer Binder Life with WMA
Hot Mix
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WMA & Porous Pavement
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Porous HMA Pavement Properties
Temperature Temperature
Viscosity Viscosity
Problem:High Temps & Low Vis = Drain Down
Coating Workability
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Draindown Solutions
Possible Solutions:1. Add Fiber, Increase AC Content
a. EXPENSIVE
2. Add Evotherm & Reduce Production Tempsa. Eliminate Fibers & Reduce AC Contentb. Rely on chemistry to provide coating and
workability at lower temperatures.
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More RAP, More RAS…
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Hot Mix with RAP & RAS
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Evotherm with RAP & RAS
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HMA WMA
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Asphalt Recycling Agents
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Research & Development
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How can Chemical Additives Help?
1. Soften oxidized binder in RAP/RAS to allow thorough blending
2. Facilitate blending of virgin asphalt with oxidized asphalt
3. Promote addition of more RAP and RAS
4. Offset stiffness related to oxidized RAP/RAS binder
5. Eliminate the need to lower binder grade
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Evotherm - Evoflex Continuum
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