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Title:Development of Dynamic Modulus Parameters from Single Point Tests
Authors:Pedro Romero
University:University of Utah
Publication Date:Jul 2023
Report #:MPC-23-499
Project #:MPC-671
TRID #:01889801
Keywords:asphalt mixtures, dynamic modulus of elasticity, pavement cracking, pavement design



This report documents the effort to develop a practical relation between the cracking tolerance index and portions of the dynamic modulus curves of asphalt mixtures. A review of practices used to create asphalt mixtures dynamic modulus master curves, based on NCHRP reports and other relevant literature, indicates that the dynamic modulus used as input to the AASHTOWare Pavement MEĀ® software can be generated based on four parameters. Review of data from 34 different projects tested between 2007 and 2010 indicates that the asphalt mixtures used in Utah have consistent patterns that define the ranges of the parameters used to generate the dynamic modulus master curve. Furthermore, an analysis that was conducted confirmed, theoretically, there should be some relation between the cracking tolerance index and the dynamic modulus. The relation was verified using asphalt mixtures from six different UDOT projects. Based on the literature review, theoretical analysis, and laboratory experiments, it was concluded that the feasibility of predicting portions of the dynamic modulus master curve using only the cracking tolerance index is reasonable. It is recommended that the results be verified using a different set of asphalt mixtures and that an actual predictive relation be developed.

How to Cite

Romero, Pedro. Development of Dynamic Modulus Parameters from Single Point Tests, MPC-23-499. North Dakota State University - Upper Great Plains Transportation Institute, Fargo: Mountain-Plains Consortium, 2023.

NDSU Dept 2880P.O. Box 6050Fargo, ND 58108-6050