Title: OHare Modernization Project
1OHare 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
2Outline
- Project Overview (5 min.)
- Reflective Cracking
- Performance of Grooved Asphalt Pavement
- New Tasks Proposed for 07 (5 min.)
3Reflective 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)
8Performance 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
12Proposed Tasks for 07
13Proposed 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
14Proposed 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
15Thank You !!
16Methodology
17An 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
18DE Modeling of Grooved AC Beam
1.5 inch
1/4 inch
1/4 inch
9.5 mm NMAS