The University of Oklahoma

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Presentation transcript:

The University of Oklahoma Quantifying the Costs and Benefits of Pavement Retexturing as a Pavement Preservation Tool The University of Oklahoma Caleb Riemer, P.E. Doug Gransberg PhD, PE Musharraf Zaman, PhD, PE Dominique Pittenger, AC

CALCULATED VALUE BASED 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!!

4 Mechanical Treatments Blastrac Shotblasting Skidabrader Shotblasting O.D.O.T . Single Size Armor Coat w/ Calupave Skidabrader Shotblasting w/ Fog Seal O.D.O.T. 3/8” Armor Coat 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 Densifier Next 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

Test Section Sponsors Blastrac, Inc. Edmond, OK JLT Corp. Cushing, 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

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

Hydrotimer Outflow Meter Macrotexture Testing Hydrotimer Outflow Meter TNZ T3 Sand Circle

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”

Pavement Retexturing Questions???? For further information contact: Doug Gransberg or Caleb Riemer dgransberg@ou.edu criemer@ODOT.ORG 405-325-6092 580-332-1526