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AASHTO/NTPEP Polymer Concrete Overlays for Bridges and Pavements (PCO)
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Alphabet Soup AASHTO – American Association of State Highway Transportation Officials NTPEP – National Transportation Product Evaluation Program e-PEF – Electronic Product Evaluation Form PCO – Polymer Concrete Overlays
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Purpose Develop and Implement a Nationally Standardized Performance Based Evaluation Process for Polymer Concrete Overlay Systems Reduce Redundancy of Testing Produce Valuable Unbiased Data
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Polymer Concrete Overlays Work Plan Scheduled for Ballot in November 2012 Scheduled for Ballot in November 2012 Extending Field Test Decks to 3-Yr EvaluationExtending Field Test Decks to 3-Yr Evaluation Testing Facilities KYTC – Division of Materials KYTC – Division of Materials Field Test Deck Field Test Deck Sample Submission and Data Reporting PCO PEF Design.xlsm PCO PEF Design.xlsm PCO PEF Design.xlsm PCO PEF Design.xlsm PDF Posted to NTPEP TC Webpage PDF Posted to NTPEP TC Webpage
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PCO Work Plan Manufacturers Participation Annual submission cycle Annual submission cycle September 12, 2012September 12, 2012 Overlay submitted as a system Overlay submitted as a system Resin and AggregateResin and Aggregate Five year resubmission cycle Five year resubmission cycle Testing Laboratory Laboratory Field test deck Field test deck
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Laboratory Testing Neat Resin Viscosity ASTM D2196 Gel Time ASTM C881 Flash Point ASTM D 3278 Infrared Spectroscopy AASHTO T237 Cured Resin Tensile Strength ASTM D638 Tensile Elongation ASTM D638 Modulus of Elasticity ASTM D638 Absorption ASTM D570
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Laboratory Testing Cured Resin (Filled) Compressive strength ASTM C579 Thermal compatibility ASTM C884 Resistance to chloride ion AASHTO T259/T260 Surface Aggregate GradationAASHTO T27 Soundness AASHTO T104 Absorption AASHTO T84/T85 Shore D hardness ASTM D2240 LA Wear test AASHTO T96 Specific Gravity AASHTO T84/T85 XRF Spectroscopy
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Field Test Deck Installation Concrete Pavement, Asphalt Pavement, and Bridge Deck 200 Foot Test Section Surface Preparation and Installation September 21 - 23 September 28 - 30 I-64 Concrete and Asphalt I-75 over Kentucky River Evaluation Within 30 Days, 12 Months, 24 Months, and 36 months Photographs Delaminated Area (%) Bond Strength ASTM D 7234 Skid Resistance AASHTO T242
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KYTC Skid Testing Established Skid Testing Program Quality Control 3 Year Calibration cycle 3 Year Calibration cycle Maintain 3 control sections Maintain 3 control sections
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Surface Preparation Concrete Bridge Deck and Pavement Shot Blast CSP 5 to CSP 7 Shot Blast CSP 5 to CSP 7 Vacuum Surface Debris Vacuum Surface Debris Asphalt Pavement Air Blast 180CFM Air Blast 180CFM Traffic Control Single Lane Closure Single Lane Closure 8pm Friday Thorough 8pm Sunday 8pm Friday Thorough 8pm Sunday
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Cost Schedule Laboratory Testing $4,000 Concrete Bridge Deck $14,000 Minimum 3 Products Minimum 3 Products Concrete Pavement $10,000 Minimum 5 Products Minimum 5 Products Asphalt Pavement $8,000 Minimum 5 Products Minimum 5 Products
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How Can YOU Help General input on surface preparation requirements General input on installation equipment/processes General input on installation time requirements
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Thank You Derrick Castle, PCS Chemical and Corrosion Laboratory Specialist Kentucky Transportation Cabinet Division of Materials Derrick.Castle@ky.gov
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