Terminal Blend Ground Tire Rubber Modified...
Transcript of Terminal Blend Ground Tire Rubber Modified...
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Terminal Blend Ground Tire Rubber
Modified Asphalt Hugh Chapman
Manager Promotions & Specialty Products
Seneca Petroleum Co,. Inc.
13301 South Cicero Ave.
Crestwood, Illinois 60445
E-mail: [email protected]
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Presentation Goals
• Why Seneca got involved with GTR
• Advantages of GTR – higher performance
at lower cost.
• Spotlight some of the noteworthy projects
in the region.
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Original Objectives
• To keep tires out of landfills. • To reduce the disposal cost of used tires • To recycle these used tires in a
environmentally friendly manner • To provide a engineered high quality
product that will extend the useful life of our road ways.
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Enhanced Physical Properties
• Developed an engineered high
performance modified binder.
• Increased Rut Resistance
• Reduced Reflective Cracking
• Reduced Thermal Cracking
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Environmentally Friendly
• Uses approximately 2,000 car tires per
one mile of typical two lane resurfacing.
• Lower temperatures = 25% reduction in
emissions.
• Reduction of road noise
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Safety • Less fumes at both the HMA plant & the
paver, better conditions for workers & public
• Less caustic material used for snow/ice control – due to increased thermal properties (it stays blacker longer)
• Little or no release agents needed for trucks or clean up of equipment
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Live-bottom without release agents
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Workability
• Easier compaction at lower temperatures
• No increase in mix temperature needed
• Easy working with hand tools
• Smoother joints and transitions
• Retains heat longer
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The 2,000 miles to Phoenix, AZ
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Easy Hand Work
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NCAT Test Track “Our goal is to inflict as much damage to pavement as can be safely done, lap by lap, for 10 million ESALs!” - Dr. Buzz Powell
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NCAT Test Track
1.7 Mile divided into 46 sections
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NCAT Test Track
• Seneca’s method utilized in MODOT sponsored comparison in 2009-11.
• Evaluate performance of GTR modified binder in high-volume, high-speed interstate highway surface mix.
• Determine viability of GTR as an approved alternative binder.
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Section S6 SBS vs S7 GTR
• Mix designs were nearly identical. • Rubber particles need to be accounted
for, either in adjustments in fine aggregate or AC content.
• Design was for 0.2% AC adjustment. • Both sections constructed same day.
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Section S6 SBS vs S7 GTR
• PG76-22 GTR binder blended at terminal 5 hours away.
• Consisted of PG64-22 with ~11% GTR, which required to meet ER spec.
• True grade of finished GTR binder was ~PG80-22.
• SBS control section true graded to ~PG77-22.
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Section S7 GTR
Section S6 SBS
QC/QA Comparison
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SBS & GTR Comparison
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IRI (in/mile) SBS Modified
IRI (in/mile) GTR Modified
Rutting (mm) SBS Modified
Rutting (mm) GTR Modified
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North Avenue Bridge
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North Ave Bridge
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Winner of 2012 NAPA National Pavement Award for Green Pavement Technologies!
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Michigan Avenue
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Michigan Avenue
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Illinois Tollway - Rockford
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Illinois Tollway - Rockford
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Illinois Tollway - Belvidere
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APPLETON, WI – CRC
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City of Chicago DOT Green Alleyways
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CITY OF CHICAGO DOT
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ISTHA I-355
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GTR Binders A Sustainable Alternative
• GTR technologies have progressed over the past
20 years.
• GTR Binders can be used in any type of HMA.
• GTR can be an effective cost saving tool without
sacrificing quality or performance.
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QUESTIONS ????
Thank You
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