Relation Between the Dynamic Modulus of Asphalt Materials and Its Cracking Tolerance Index

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 National Cooperative Highway Research Program (NCHRP) reports and other relevant literature, indicates that the dynamic modulus used as input to the AASHTOWare Pavement ME® software can be generated based on four parameters. A review of data from 34 different projects 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 indicated that, theoretically, there should be some relation between the cracking tolerance index and the dynamic modulus. The relation was verified using nine different asphalt mixtures. 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 and can provide more accurate results than simply using default values. It is recommended that the results be verified using a different set of asphalt mixtures and that an actual predictive relation be developed.

• Record URL:
  • https://www.ugpti.org/resources/reports/details.php?id=1172
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/76677
• Summary URL:
  • https://rosap.ntl.bts.gov/view/dot/76955
• Supplemental Notes:
  • This document was sponsored by the U.S. Department of Transportation, University Transportation Centers Program.
• Corporate Authors:

  University of Utah, Salt Lake City

  Department of Civil and Environmental Engineering
  122 South Central Campus Drive
  Salt Lake City, UT  United States  84112

  Mountain-Plains Consortium

  North Dakota State University
  Fargo, ND  United States  58108

  Office of the Assistant Secretary for Research and Technology

  University Transportation Centers Program
  Department of Transportation
  Washington, DC  United States  20590
• Authors:
  • Romero-Zambrana, Pedro
• Publication Date: 2024-6

Language

• English

Media Info

• Media Type: Digital/other
• Edition: Final Report
• Features: Appendices; Figures; Photos; References; Tables;
• Pagination: 35p

Subject/Index Terms

• TRT Terms: Asphalt mixtures; Asphalt pavements; Cracking; Dynamic modulus of elasticity; Mechanistic-empirical pavement design; Predictive models
• Identifier Terms: AASHTOWare Pavement ME Design (Software)
• Geographic Terms: Utah
• Subject Areas: Design; Highways; Pavements;

Filing Info

• Accession Number: 01927537
• Record Type: Publication
• Report/Paper Numbers: MPC-701, MPC 24-527
• Files: UTC, NTL, TRIS, USDOT
• Created Date: Aug 20 2024 4:17PM