Review of Illinois Multiple Stress Creep and Recovery Data for Future Implementation

Hajj, Ramez; Asadi, Babak

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https://hdl.handle.net/2142/121287 Copy

Description

Title

Review of Illinois Multiple Stress Creep and Recovery Data for Future Implementation

Author(s)

• Hajj, Ramez
• Asadi, Babak

Issue Date

2023-12

Keyword(s)

• Asphalt
• Asphalt Binder
• MSCR
• Rutting
• Elastic Recovery
• Machine Learning

Abstract

The multiple stress creep recovery (MSCR) test, per AASHTO M 332, or as a supplement to M 320, has been widely implemented across the United States and in other parts of the world for assessing the rutting resistance of asphalt binder. Meanwhile, the Illinois Department of Transportation (IDOT) has conducted wide-ranging MSCR testing since 2006 but has not yet implemented this test into the binder specification, which utilizes AASHTO M 320 with other PG Plus tests for modified asphalt binder. This report presents a review of the existing literature and an update of specifications in the United States for the rutting resistance of asphalt binder. The report also presents an analysis of existing MSCR data collected by IDOT and a machine learning model with the ability to predict asphalt binder elastic recovery using MSCR. This model demonstrated the potential effectiveness of MSCR to serve as an appropriate surrogate for this test, but further study is needed of Illinois mixture performance compared to MSCR to best understand how this specification can be implemented for local materials and traffic levels.

Publisher

Illinois Center for Transportation/Illinois Department of Transportation

Has Part

• https://doi.org/10.36501/0197-9191/23-027
• ISSN: 0197-9191

Series/Report Name or Number

FHWA-ICT-23-020

Type of Resource

text

Language

en

Sponsor(s)/Grant Number(s)

IDOT-R27-SP63

Copyright and License Information

No restrictions. This document is available through the National Technical Information Service, Springfield, VA 22161.

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