terminal blend ground tire rubber modified...
TRANSCRIPT
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
NCAT Test Track
1.7 Mile divided into 46 sections
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.
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.
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.
Section S7 GTR
Section S6 SBS
QC/QA Comparison
SBS & GTR Comparison
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120.0
Sep
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Nov
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Dec
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Mar
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Apr
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May
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Jul-1
0
Aug
-10
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Nov
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Dec
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Mar
-11
Apr
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Jul-1
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-11
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-11
IRI (in/mile) SBS Modified
IRI (in/mile) GTR Modified
Rutting (mm) SBS Modified
Rutting (mm) GTR Modified
North Avenue Bridge
North Ave Bridge
Winner of 2012 NAPA National Pavement Award for Green Pavement Technologies!
Michigan Avenue
Michigan Avenue
Illinois Tollway - Rockford
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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Mvi_0629.aviMvi_0629.avi
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.
QUESTIONS ????
Thank You
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