FY24 Enhancements moving forward – stay tuned
September 26, 2023Adding MSCR to the software:
The AASHTO M 332-18, Multiple Stress Creep Recovery (MSCR) test has been implemented by multiple agencies throughout the USA and Canada. At present, the MSCR test is not accepted by the PMED software but is recommended for a better evaluation of asphalt binder modifications. Many agencies in North America are planning to use AASHTO M 332 in the specifications. The inclusion of the MSCR binder grade characterization will allow users to select binders directly representative of their current practices and naming conventions.
Updating/Revising the Local Calibration Guide
The AASHTO Guide for the Local Calibration of the Mechanistic-Empirical Pavement Design Guide (Calibration Guide) was published in 2010 and has not been revised since its original publication. The Calibration Guide provides guidance to calibrate the MEPDG procedure, and transfer functions to local design practices, policies, environmental conditions, traffic loadings, and materials. The Manual of Practice and the AASHTOWare PMED software have been revised several times to include new analysis models, design strategies, climatic data, and recalibration efforts. Additionally, the AASHTOWare Calibration Assistant Tool (CAT) was developed and released to AASHTOWare PMED licensees to assist agencies with local calibration. None of these changes have been included in the Calibration Guide since its publication. This enhancement will bring the Local Calibration Guide up to date with the MOP and using the CAT.