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Quantifying the Costs and Benefits of Pavement Retexturing as a Pavement Preservation Tool
The University of OklahomaCaleb Riemer, P.E.
Doug Gransberg PhD, PE
Musharraf Zaman, PhD, PE
Dominique Pittenger, AC
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Project Objective• Leverage Previous National Research
– Skid Number vs. Crash Rates– Crash Rates vs. Road Conditions– Long Term Pavement Performance Program
• Leverage Previous International Research– Macrotexture vs. Crash Rates– Management of Pavement Macrotexture
CALCULATED VALUE BASED DECISION PROCESS!!
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Blastrac Shotblasting
Skidabrader Shotblasting
O.D.O.T . Single Size Armor Coat w/ Calupave
Skidabrader Shotblasting w/ Fog SealSkidabrader Shotblasting
O.D.O.T. 3/8” Armor Coat
Blastrac Shotblasting
O.D.O.T. 5/8” Armor Coat
O.D.O.T. 5/8” Armor Coat w/ Fog Seal
Open Graded Friction Course w/ Fog Seal
JLT Asphalt Penetrating Conditioner JLT Asphalt Planer w/ Asphalt Pen. Conditioner
O.D.O.T. Single Size Armor Coat
Open Graded Friction Course
1” Mill and Inlay S4 PG(64-22 OK) Fog Seal
Polycon E-Krete
Calupave Fog Seal
NovaChip
Microsurface
Diamond Grinding
Blastrac Shotblasting w/ Nano Lithium DensifierNext
Generation Diamond Grinding
• 23 TEST SECTIONS• ¼ MILE LONG (400 M)
ASPHALT SECTIONS• 12 Surface Treatments• 2 Chemical Treatments
• 4 Mechanical Treatments
CONCRETE SECTIONS• 1 Chemical Treatments
• 4 Mechanical Treatments
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Test Section Sponsors• Blastrac, Inc. Edmond, OK• Penhall Diamond Grinding, Anaheim, CA
• JLT Corp. Cushing, OK• Ergon Emulsions and Materials, Austin, TX• Skidabrader, Inc. Ruston, LA• Polycon, Madison, MS
• Haskell Lemon & Hall Brothers, OKC, OK• Pathway Services, Tulsa, OK• Calumet Lubricants, Shreveport, LA
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Testing Protocol• Follow change in macrotexture & skid resistance over time.• Macrotexture tests
– ASTM STP 583 Outflow meter– TNZ T/3 Sand circle– TNZ P/17 Performance Spec for chip seal texture– RoboTex (Transtec)– High Speed Truck Mounted Laser (Pathway)
• Skid resistance measured by ODOT skid tester– Ribbed tire (40 mph) & Smooth tire (40 mph and 55 mph)
• Test conducted monthly for 3 years• Plans to extend period to surface failure, but will reduce
frequency to quarterly tests
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Macrotexture TestingTNZ T3 Sand Circle Hydrotimer Outflow Meter
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Test Section 15 - Blastrac Shotblasting
Sand Patch Hydrotimer Flowmeter Skid
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Test Section 2 - OGFC
Sand Patch Hydrotimer Flowmeter Skid
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Test Section 9 - Pavement Conditioner
Sand Patch Hydrotimer Flowmeter Skid
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Mill and Inlay vs. Chip Seal
Chip Seal Macrotexure Inlay Macrotexture Chip Seal Skid No. Inlay Skid No.
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Economic Analysis• Tracking change in engineering properties
must be correlated with an analysis of the cost of supplying those properties
• Life cycle cost analysis for each tested alternative.
• Develop life cycle cost model for pavement texture over time.
• Use of Cost Index Number Theory to quantify “Bang for the Buck”
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Pavement Retexturing
Questions????
For further information contact:
Doug Gransberg or Caleb [email protected] [email protected]
405-325-6092 580-332-1526