Michigan Local Agency 2018 Treatment Life Study Project Team: - PowerPoint PPT Presentation

Mar 14, 2023 •27 likes •347 views

Michigan Local Agency 2018 Treatment Life Study Project Team: Peter Torola, PE, Research Engineer Tim Colling, PhD, PE, Director Victoria Sage, Report Technical Editor Peter Torola, PE Agenda Definitions Key Finding ESL Background Study

Michigan Local Agency 2018 Treatment Life Study Project Team: Peter Torola, PE, Research Engineer Tim Colling, PhD, PE, Director Victoria Sage, Report Technical Editor Peter Torola, PE
Agenda Definitions Key Finding ESL Background Study Overview Results
Critical Distress Point 10 9 8 7 PASER Rating 6 5 4 CDP 3 2 1 1 5 10 15 20 25 30 Years
Extended Service Life 10 9 8 7 PASER Rating 6 5 ESL 4 CDP 3 2 1 1 5 10 15 20 25 30 Years
Key ESL Finding 4.1 years Chip Seal Chip Seal + Fog 7.1 years
Roadsoft Tool Background
Needed ESL Calculator Updates
Needed ESL Calculator Updates
Measuring ESL: Actual vs. Modeled
Other Studies use Aggregate Modeling Techniques Y=1.2334 e 0.3345X 10 9 Y=1.454 e 0.15X 8 7 PASER RATING 6 5 4 CDP 3 2 1 1 5 10 15 20 25 30 Years
We used Individual Element Modeling
Why don’t more people use this method for analysis?
Study Data Selection Criteria • Asphalt pavements • Federal aid eligible roads • 1st applied treatment ever or after a heavier treatment • 3 rating points before and after treatment • Only rating data prior to 2000
Data That Met Criteria
14 Treatments Meeting Criteria Cape Seal Chip Seal Chip Seal + Fog Microsurface Slurry Seal Thin Overlay Cold in Place (CIP) + Overlay Crush & Shape Hot in Place (HIP) HIP + Overlay HMA Wedge + Chip Seal HMA Wedge + Overlay Thick Overlay Reconstruction
5 Treatments with Enough Data Chip Seal Chip Seal + Fog Thin Overlay Crush & Shape Thick Overlay
Seal Coat (Chip Seal)
Chip Seal Results
Chip Seal + Fog Seal
Chip With Fog
Thin Asphalt Overlay
Thin Asphalt Overlay
Crush and Shape
Crush and Shape
Thick Asphalt Overlay
Thick Asphalt Overlay
Zero or Low ESL Gain?
Age VS Load Related Distress
Other Variables Legal System National Function Class Lanes Region
Region Breakdown Chip Seal Thick Overlay
Points To Take Away Study looked at worst case analysis for ESL Local agencies are collecting high quality data Local agencies gain significant benefit with treatments Cost effective analysis should drive practice You have the data and tools to do this yourself
Contact Information www.michigan.gov/tamc 906-487-2102 roadsoft@mtu.edu LTAP@mtu.edu www.roadsoft.org www.MichiganLTAP.org

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