Peter Vacura
Upcoming SlideShare
Loading in...5
×
 
  • 298 views

Presentation by Peter Vacura of Caltrans on long-life asphalt pavements delivered at the CalAPA Fall Asphalt Pavement Conference held Oct. 24, 2013 in Sacramento, Calif.

Presentation by Peter Vacura of Caltrans on long-life asphalt pavements delivered at the CalAPA Fall Asphalt Pavement Conference held Oct. 24, 2013 in Sacramento, Calif.

Statistics

Views

Total Views
298
Views on SlideShare
298
Embed Views
0

Actions

Likes
0
Downloads
7
Comments
0

0 Embeds 0

No embeds

Accessibility

Categories

Upload Details

Uploaded via as Microsoft PowerPoint

Usage Rights

© All Rights Reserved

Report content

Flagged as inappropriate Flag as inappropriate
Flag as inappropriate

Select your reason for flagging this presentation as inappropriate.

Cancel
  • Full Name Full Name Comment goes here.
    Are you sure you want to
    Your message goes here
    Processing…
Post Comment
Edit your comment

    Peter Vacura Peter Vacura Presentation Transcript

    • LONG LIFE PAVEMENTS Peter Vacura Chief, Office of Asphalt Pavement Pavement Program California Asphalt Pavement Association Fall Conference October 24, 2013
    • PRESENTATION OVERVIEW • • • • • Pavement Selection Testing Design (CalME) Performance Specifications Lessons Learned
    • Pavement Project Selection • Identify location with long life in mind • Rehabilitation projects • Life Cycle Costs/Scoping Document • Program project for SHOPP Cycle
    • Testing • As-builts of existing roadway • Verify with coring and GPR • Identify possible binder and aggregate sources for testing • Preliminary shear/fatigue testing
    • Design (CalME) • Mechanistic Empirical approach • Design for over 40 years • Building materials library • Based on Shear and Fatigue testing • Establish Performance Requirements
    • Performance Specifications • Based on Shear, Fatigue, Stiffness • Meet certain levels of repetitions • Beyond standard mix design • Investigating Asphalt Material Performance Tester (AMPT)
    • MIX DESIGN BASED ON ‘MECHANISTIC/PERFORMANCE’ LAB TESTING • Hveem (CT 366) • Shear Testing (T 320) • Fatigue Testing (T 321) • Hamburg WT (T 324)
    • LESSONS LEARNED • New to industry  Complex data analysis and presentation  Currently looking at ways to simplify process • Present test results more straight forward manner • Availability of testing labs • Testing time
    • LESSONS LEARNED • • Pre-bid conference for potential bidders very beneficial Partnering Meeting used to ensure an understanding by the contractor and testing laboratory of the performance test procedures
    • LESSONS LEARNED • • • Anticipate the need for multiple mix designs/iterations. Schedule mix design and testing as soon as possible Ensure sufficient testing capacity is available
    • LOOKING FORWARD • • • • Reevaluate performance requirements (shear, fatigue) Building of Materials Library Investigate AMPT as an alternate to the shear tester (AASHTO T-320) Pre-award qualification of mix design(s)
    • Thank you