TRB conducted a webinar on August 30, 2012, from 2:00 p.m.-3:30 p.m. ET that explored
NCHRP Report 719: Calibration of Rutting Models for Structural and Mix Design that proposed revisions to the Mechanistic–Empirical Pavement Design Guide (MEPDG) and software to incorporate three alternative rut-depth prediction models. This webinar has been recorded. Contact
Reggie Gillum for more details.
This webinar will focus on the:
- Transfer functions included in the report analysis
- Analysis of the plastic deformation results from laboratory tests
- Calibration and validation of the rut depth transfer functions
- Assessment and effectiveness of the rut depth transfer functions
- Suggested revisions to the MEPDG
- Suggested rut depth transfer functions to be used for structural and mixture design of hot-mix asphalt (HMA) mixtures.
The webinar will highlight the Proposed Addendum to the American Association of State Highway and Transportation Officials (AASHTO) Publication MEPDG-1: MEPDG, Interim Edition: A Manual of Practice. This addendum was included as Appendix A to NCHRP Report 719. A separate section of the webinar will cover the advanced mixture characterization tests and model formulation for future work.
Panelist Presenters and Outline:
- Harold L. Von Quintus, Applied Research Associates, Inc.
- Introduction to project, project objectives, and outcomes
- Rut depth transfer functions included in the study and revisions made to the MEPDG software
- Projects and mixtures included in the calibration and validation process
- Ramon Bonaquist, Advanced Asphalt Technologies, LLC
- Laboratory tests for measuring the plastic deformation parameters of HMA
- Analysis of repeated load plastic deformation test data
- Harold L. Von Quintus, Applied Research Associates, Inc.
- Calibration and validation of rut depth transfer functions
- Charles "Chuck" Schwartz, University of Maryland
- Advanced mixture characterization tests and rut depth simulation models
- Harold L. Von Quintus, Applied Research Associates, Inc.
- Assessment and effectiveness of laboratory tests and rut depth transfer functions
- Conclusions and suggestions for implementation
Moderated by: Ed Harrigan, Transportation Research Board
Webinar learning objectives:
- At the end of this webinar, attendees will be able to:
- Determine the plastic deformation coefficients from laboratory repeated load plastic deformation tests (triaxial- and shear-based tests) and adjust those values to represent field conditions for use in and in accordance with the MEPDG software for predicting the rut depth of HMA mixtures.
- Determine or judge the conditions when the repeated load plastic deformation tests become cost-effective in predicting the rut depth of HMA mixtures for use in the MEPDG software.
- Estimate the plastic deformation parameters of the recommended rut depth transfer functions from HMA volumetric and component properties when laboratory testing is judged not to be cost-effective.
- Use the results from the repeated load constant height shear test for estimating the potential for rutting of HMA mixtures from field cores, when original materials are unavailable for preparing triaxial-based repeated load tests.
Registration information:
There is no fee for employees of
TRB sponsors who register using their work email address. In addition to employees of TRB sponsor organizations, the following are eligible to receive complimentary webinar registration:
- TRB and National Academies employees
- Chairs of TRB standing committees, sections, or groups
- CRP panel members who were involved with developing the report or project that is the subject of the webinar
- Members of the media
- Congressional staff members
Other sites must pay $89 per site.
View our pricing page for details.
After registering you will receive a confirmation email containing information about joining the webinar.
Professional Development Hour information:
A certificate for 1.5 Professional Development Hour (PDH) will be provided to Professional Engineers (PEs) who register and attend the webinar as an individual. For groups, only the person that registers and attends the session will receive a PDH certificate.
Individuals registered as Florida PEs are required to email Reggie Gillum,
RGillum@nas.edu, with their license number.
Please check with your licensing board to ensure that TRB webinar PDHs are approved by your board. TRB is classifying this webinar as one related to business practices.
This webinar was developed in June 2012. TRB has met the standards and requirements of the Registered Continuing Education Program (RCEP). Credit earned on completion of this program will be reported to RCEP by TRB. Certificates of Completion will be issued to individuals who register for and attend the entire webinar session. Complaints about registered providers may be sent to RCEP, PO Box 1686, Clemson, SC, 29633. Website:
www.RCEP.net.
Registration questions? Contact Reggie Gillum at
RGillum@nas.edu.
This Summary Last Modified On: 3/26/2013