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OHare Modernization Project

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In Consultation with Mr. David Peshkin, Applied Pavement Technologies ... Due to deynamic tire-pavement interaction. PCC tining prior to HMA overlay. h ... – PowerPoint PPT presentation

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Title: OHare Modernization Project


1
OHare Modernization Project
Reflective Cracking and Improved Performance of
Grooved Asphalt September 21st, 2006 Research
Overview and Future Tasks
William G. Buttlar, Associate Professor Imad
Al-Qadi, Professor Hyunwook Kim, Hasan Ozer, Alex
Apeagyei, Research Assistants
2
Outline
  • Project Overview (5 min.)
  • Reflective Cracking
  • Performance of Grooved Asphalt Pavement
  • New Tasks Proposed for 07 (5 min.)

3
Reflective Cracking Updates
4
Preliminary Modeling(January September 06)
  • Prepare Constitutive Models for ABAQUS Finite
    Element Program (Creep, Fracture)
  • Thermal Cracking Analysis using TCMODEL

5
Assessment of Existing ORD Pavement(June-October
)
  • In Consultation with Mr. David Peshkin, Applied
    Pavement Technologies
  • Review Databases, ORD Pavement Inventory, and PCI
    Distress Survey Results
  • Develop Schematics to Aid in Selection of
    Priority Pavements for Detailed Study (Example)

6
Field Sampling and Testing(October-November)
  • Field Investigation of Priority Pavements
    (Coordinated w/ Mr. Peshkin)
  • Procurement of 150mm Cores (Away From Gear
    Loading Areas) for Lab Testing

7
Site-Specific RC Modeling(October-December)
  • Finalize Meshes for Priority Pavements (Oct)
  • Run Parametric Investigations for Range of
    Typical Material Properties (Oct-Nov)
  • Re-run Parametric Investigations When Lab Results
    are Available (Nov-Dec)

8
Performance of Grooved Pvt Update
9
Literature Review(June July 06)
  • Summarized During July Presentation
  • Will be Documented in Quarterly Report
  • Copies Available Upon Request

10
Performance Test Development(June-October)
  • Feasibility of Adapting Advanced Pavement
    Analyzer (APA) Assessed
  • Logistics and Permission for Testing with of IDOT
    BMPRs APA Completed
  • Preparation and Testing of Baseline Materials in
    Development

11
Field Sampling and Testing(October-December)
  • In Conjunction with Mr. David Peshkin, Applied
    Pavement Technologies and in Parallel with
    Reflective Cracking Task
  • Field Investigation of Priority Pavements
  • Procurement of 150mm Cores (away from gear
    loading areas) and Lab Testing

12
Proposed Tasks for 07
13
Proposed Tasks for 07
  • Develop Best Practices Guidelines for HMA
    Overlays at ORD
  • Goal Minimize RC severity and subsequent FOD
  • PG Binder Selection
  • Mix Design and Thickness Considerations
  • HMA Performance Test

14
Proposed Tasks (cont.)
  • Groove Collapse Modeling
  • Best Practices Guidelines for Grooved Pavement at
    ORD
  • Goal Minimize Deterioration of Grooved Pavement
    Surfaces
  • PG Binder Selection
  • Mix Design Considerations
  • Groove Geometry Considerations
  • Performance Test Protocols

15
Thank You !!
16
Methodology
17
An example for micro-structural considerations
  • Explicit consideration of surface roughness of
    interfaces as a micro-structural property (i.e.
    saw-tooth model)
  • Consider degradation of h in a plasticity model
  • Degradation due to shear stresses at the pavement
    surface
  • Due to deynamic tire-pavement interaction

PCC tining prior to HMA overlay
18
DE Modeling of Grooved AC Beam
1.5 inch
1/4 inch
1/4 inch
9.5 mm NMAS
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