Advantages & Benefits of Evotherm
Advantages of Evotherm  <ul><li>Improved Compaction </li></ul><ul><li>Liquid Anti-Strip Replacement & Fiber Removal </li><...
Improved Compaction
<ul><ul><li>PG76-22 </li></ul></ul><ul><ul><li>T mix: 240°F </li></ul></ul><ul><ul><li> T: 95°F </li></ul></ul>Texas DOT ...
TxDOT Densities 5% 3.2% 2.0% Evotherm is frequently used as a compaction aid to achieve density bonuses
NCAT Test Track  Pavement Densities 200 220 240 260 280 300 320 340 % Density Compaction Temp (F) Evotherm Temp HMA Temp
Liquid Anti-Strip Replacement & Fiber Removal
Approval as a Liquid Anti-Strip <ul><li>Evotherm has been approved as a liquid anti-strip </li></ul><ul><ul><li>•   Alabam...
Fiber Replacement OGFC <ul><li>Clemson University, Dr. Brad Putman </li></ul><ul><li>Evaluated HMA and Evotherm OGFC mixtu...
Fiber Replacement SMA <ul><li>Rutgers University, Dr. Thomas Bennert </li></ul><ul><li>Evaluated HMA and Evotherm SMA mixt...
Reduced Thermal Segregation
Thermal Segregation <ul><li>Associated with poor pavement performance. </li></ul><ul><ul><li>Resists adequate compaction e...
62 Deg Difference
24 Deg Difference
Extended Hauls and  Paving Season
Reaching Farther & Working Longer <ul><li>Evotherm can be used at hot mix temperatures to increase your market reach and e...
HMA at 50ºF HMA has  only 19 minutes  of paving time until the minimum compaction temperature is reached. 19 Minutes
Evotherm at 50ºF 35 Minutes Evotherm has  35 minutes  until the minimum compaction temperature is reached. > 80% Increase ...
Evotherm at 1ºF 21 Minutes It would have to be  1 °F  outside for Evotherm to behave like HMA at  50  °F !
Modoc National Forest December 2010 <ul><li>Modoc National Forest is located in a remote section of Northern California… <...
Increased usage of RAP
Recycled Asphalt Pavement <ul><li>Evotherm can increase RAP content by over 50% vs HMA  </li></ul><ul><ul><li>The DOE fore...
Increased RAP in Missouri I-44 in Eureka, MO near St. Louis 12.5-mm Superpave mix with PG70-22 binder Increased RAP conten...
Blending of RAP and Virgin Asphalt <ul><li>Thorough blending of virgin and RAP binders is important, especially when high ...
Maintaining the Performance Grade New York City, New York <ul><li>Evotherm and HMA were compared in mixes containing 40% R...
Reduced Fuel Consumption and Emissions
Lower Emissions Hot Mix
Lower Stack Emissions with Evotherm compared to HMA 200 °F Evotherm, 310°F HMA control
What is WARM?  Hot Mix Even at 276 °F, fumes are still visible.
Fume Exposure compared to HMA ↓ 41% Evotherm Below  Detectable Limits ↓
Longer Binder Life
Binder Hardening Reduced Oxidation with Evotherm
Aggregate Absorption Hot Mix Control TxDOT Cores After 1 Year
TTI Overlay Tester Results * Test stopped   * *
TTI Overlay Tester Results - Limestone
Longer Lasting Roads <ul><ul><li>Hundreds of projects; > 10,000 miles </li></ul></ul><ul><ul><li>9+ independent studies </...
The Evotherm Difference
Evotherm Difference <ul><li>Easy to Use </li></ul><ul><ul><li>Any mix plant  </li></ul></ul><ul><ul><li>No equipment to pu...
Evotherm Difference <ul><li>Easy to Use </li></ul><ul><li>Lowest Temperatures </li></ul><ul><ul><li>Reduced thermal segreg...
Evotherm Difference <ul><li>Easy to Use </li></ul><ul><li>Lowest Temperatures </li></ul><ul><li>Proven Performance </li></...
Easy to Use, Lowest Temperatures, Proven Performance
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Advantages and Benefits of Evotherm

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Presented by Lance Brooks.

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  • The mix was 3/4&amp;quot; with a modified PG 62-28 binder and had a 15% RAP content. Initial compaction temperatures were around 270 F. Eagle Peak was amazed that there were no chunks found after the belly dump. Eagel Peak President, Tony Cruse, claimed that the mix came out of the chute &amp;quot;like sand&amp;quot;.  Target densities were surpassed throughout the run.  They were even able to compact mix that was placed in a water-filled rut without any cracking! Note: This was also Eagle Peak Paving’s first Evotherm job!
  • Advantages and Benefits of Evotherm

    1. 1. Advantages & Benefits of Evotherm
    2. 2. Advantages of Evotherm <ul><li>Improved Compaction </li></ul><ul><li>Liquid Anti-Strip Replacement & Fiber Removal </li></ul><ul><li>Reduced Thermal Segregation </li></ul><ul><li>Extended Hauls and Paving Season </li></ul><ul><li>Increased Usage of RAP </li></ul><ul><li>Reduced Fuel Consumption and Emissions </li></ul><ul><li>Longer Binder Life </li></ul>
    3. 3. Improved Compaction
    4. 4. <ul><ul><li>PG76-22 </li></ul></ul><ul><ul><li>T mix: 240°F </li></ul></ul><ul><ul><li> T: 95°F </li></ul></ul>Texas DOT San Antonio, TX One of the first Evotherm demonstration projects in the US, 2008.
    5. 5. TxDOT Densities 5% 3.2% 2.0% Evotherm is frequently used as a compaction aid to achieve density bonuses
    6. 6. NCAT Test Track Pavement Densities 200 220 240 260 280 300 320 340 % Density Compaction Temp (F) Evotherm Temp HMA Temp
    7. 7. Liquid Anti-Strip Replacement & Fiber Removal
    8. 8. Approval as a Liquid Anti-Strip <ul><li>Evotherm has been approved as a liquid anti-strip </li></ul><ul><ul><li>• Alabama • Florida • Illinois </li></ul></ul><ul><ul><li>• Iowa • Missouri • North Carolina </li></ul></ul><ul><ul><li>• Tennessee • Virginia • Washington </li></ul></ul><ul><ul><li>Louisiana </li></ul></ul><ul><li>Enables replacement of lime or liquid anti-strip in the mix design while achieving best-in-class warm mix asphalt performance. </li></ul>
    9. 9. Fiber Replacement OGFC <ul><li>Clemson University, Dr. Brad Putman </li></ul><ul><li>Evaluated HMA and Evotherm OGFC mixtures with and without fibers </li></ul>Less Draindown Equal or Greater Optimum Binder Content No Moisture Sensitivity Lower Cost, Longer Lasting Roads With Evotherm
    10. 10. Fiber Replacement SMA <ul><li>Rutgers University, Dr. Thomas Bennert </li></ul><ul><li>Evaluated HMA and Evotherm SMA mixtures with and without fibers </li></ul>Less Draindown Higher Fatigue Resistance Lower Mixture Stiffness Lower Permanent Deformation Resistance Lower Cost, Longer Lasting Roads With Evotherm
    11. 11. Reduced Thermal Segregation
    12. 12. Thermal Segregation <ul><li>Associated with poor pavement performance. </li></ul><ul><ul><li>Resists adequate compaction even after aggressive rolling </li></ul></ul><ul><ul><li>Higher permeabilities due to lower density </li></ul></ul><ul><ul><li>Lower shear strength </li></ul></ul><ul><ul><li>Increased binder oxidation </li></ul></ul><ul><ul><li>Reduced life of the road </li></ul></ul>
    13. 13. 62 Deg Difference
    14. 14. 24 Deg Difference
    15. 15. Extended Hauls and Paving Season
    16. 16. Reaching Farther & Working Longer <ul><li>Evotherm can be used at hot mix temperatures to increase your market reach and extend your paving season </li></ul><ul><ul><li>Increase market reach by hauling material longer distances. Since Evotherm remains workable at a lower temperature, asphalt can be cooler when it reaches the jobsite. This gives remote jobs extended haul times. </li></ul></ul><ul><ul><li>Extend paving seasons while achieving target densities. Even when it’s cold out, Evotherm gets the job done. Many contractors have succeeded with Evotherm below the traditional “stop paving” temperatures. </li></ul></ul>
    17. 17. HMA at 50ºF HMA has only 19 minutes of paving time until the minimum compaction temperature is reached. 19 Minutes
    18. 18. Evotherm at 50ºF 35 Minutes Evotherm has 35 minutes until the minimum compaction temperature is reached. > 80% Increase in compaction time
    19. 19. Evotherm at 1ºF 21 Minutes It would have to be 1 °F outside for Evotherm to behave like HMA at 50 °F !
    20. 20. Modoc National Forest December 2010 <ul><li>Modoc National Forest is located in a remote section of Northern California… </li></ul><ul><li>… over a mountain pass </li></ul><ul><li>… .that requires chains </li></ul><ul><li>… .with temperatures in the 20s </li></ul><ul><li>… .for an over 2-hour haul. </li></ul><ul><li>Mix type? ¾ -inch with a modified PG 62-38 binder and containing 15% RAP </li></ul><ul><li>VERY FAVORABLE performance compared to the hot mix section. </li></ul><ul><ul><li>No chunks after the belly dump </li></ul></ul><ul><ul><li>Mix came out of the chute “like sand” </li></ul></ul><ul><ul><li>Surpassed target densities </li></ul></ul>
    21. 21. Increased usage of RAP
    22. 22. Recycled Asphalt Pavement <ul><li>Evotherm can increase RAP content by over 50% vs HMA </li></ul><ul><ul><li>The DOE forecasts crude oil prices to average $105 per barrel throughout 2011 and 2012. </li></ul></ul>
    23. 23. Increased RAP in Missouri I-44 in Eureka, MO near St. Louis 12.5-mm Superpave mix with PG70-22 binder Increased RAP content by 75% while maintaining mix properties. Excellent workability in the lab and in the field. RAP savings of $4 per mix ton! 3.48 3.49 DSR @ 70 C 26 32 MSCR 7.35 7.56 DSR @ 64 C 38 42 Ductility 25,900 23,500 Viscosity 29 28 Penetration HMA 20% RAP Evotherm 35% RAP
    24. 24. Blending of RAP and Virgin Asphalt <ul><li>Thorough blending of virgin and RAP binders is important, especially when high levels of RAP are used. </li></ul><ul><li>Evotherm mix formulations containing 40% RAP were evaluated in MWV’s Asphalt Innovations laboratory </li></ul><ul><ul><li>Dynamic moduli were measured with an AMPT and calculated using the Hirsch model protocol. </li></ul></ul><ul><ul><li>Thorough blending of the RAP binder and virgin PG64-22 binder was observed. </li></ul></ul><ul><ul><li>Excellent correlation between measured and calculated values was shown. </li></ul></ul>Evotherm mixtures containing 40% RAP Dynamic Moduli, ksi Measured 68 °F, 10 Hz 10000 1000 100 10 1 Calculated 68 °F 1 Hz 68 °F 0.1 Hz
    25. 25. Maintaining the Performance Grade New York City, New York <ul><li>Evotherm and HMA were compared in mixes containing 40% RAP </li></ul><ul><ul><li>HMA control binder graded as a PG 76-16 & failed PAV testing </li></ul></ul><ul><ul><li>Evotherm binder graded as a PG 70-22; Less thermal cracking </li></ul></ul><ul><li>Under cold weather conditions, Evotherm in PG64-22 was evaluated with 40% RAP. </li></ul><ul><ul><li>Ambient temperature below 20 °F </li></ul></ul><ul><ul><li>Tarped trucks and 30 minute haul </li></ul></ul><ul><ul><li>Mix compacted easily with dense longitudinal joints </li></ul></ul>
    26. 26. Reduced Fuel Consumption and Emissions
    27. 27. Lower Emissions Hot Mix
    28. 28. Lower Stack Emissions with Evotherm compared to HMA 200 °F Evotherm, 310°F HMA control
    29. 29. What is WARM? Hot Mix Even at 276 °F, fumes are still visible.
    30. 30. Fume Exposure compared to HMA ↓ 41% Evotherm Below Detectable Limits ↓
    31. 31. Longer Binder Life
    32. 32. Binder Hardening Reduced Oxidation with Evotherm
    33. 33. Aggregate Absorption Hot Mix Control TxDOT Cores After 1 Year
    34. 34. TTI Overlay Tester Results * Test stopped * *
    35. 35. TTI Overlay Tester Results - Limestone
    36. 36. Longer Lasting Roads <ul><ul><li>Hundreds of projects; > 10,000 miles </li></ul></ul><ul><ul><li>9+ independent studies </li></ul></ul><ul><ul><li>More than 20 DOT Evaluations </li></ul></ul><ul><ul><li>Projects in 40 states, 8 provinces, 10 countries </li></ul></ul><ul><ul><li>Approximately 20 million ESAL’s on NCAT Test Track with less than 2 mm of rutting </li></ul></ul>
    37. 37. The Evotherm Difference
    38. 38. Evotherm Difference <ul><li>Easy to Use </li></ul><ul><ul><li>Any mix plant </li></ul></ul><ul><ul><li>No equipment to purchase or maintain </li></ul></ul><ul><ul><li>Drop-in laboratory evaluations </li></ul></ul><ul><li>Lowest Temperatures </li></ul><ul><li>Proven Performance </li></ul>
    39. 39. Evotherm Difference <ul><li>Easy to Use </li></ul><ul><li>Lowest Temperatures </li></ul><ul><ul><li>Reduced thermal segregation </li></ul></ul><ul><ul><li>Lower emissions </li></ul></ul><ul><ul><li>Reduced fuel consumption </li></ul></ul><ul><ul><li>Long hauls </li></ul></ul><ul><ul><li>Extended season </li></ul></ul><ul><li>Proven Performance </li></ul>
    40. 40. Evotherm Difference <ul><li>Easy to Use </li></ul><ul><li>Lowest Temperatures </li></ul><ul><li>Proven Performance </li></ul><ul><ul><li>Improved Compaction </li></ul></ul><ul><ul><li>Increased RAP Content </li></ul></ul><ul><ul><li>Longer binder life </li></ul></ul>
    41. 41. Easy to Use, Lowest Temperatures, Proven Performance
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