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Title:

Asphalt Binder Property to Mixture Property Correlation Based on Field-Aged Samples

Accession Number:

01660209

Record Type:

Component

Abstract:

Asphalt binder plays a significant role in durability and quality of asphalt pavement. Efforts have been made on establishing correlations between asphalt binder and mixture properties. However, the complexity associated with various types of additives introduced in asphalt mixtures, such as warm mix asphalt (WMA), polymers, and recycled materials, makes the development of such correlations difficult. This study aimed to identify such a correlation, if any, between the asphalt binder and mixture properties at high, intermediate, and low temperatures, respectively based on field cores. A total of 83 field aged samples in 28 projects across the United States, covering different WMA types, climate zones, binders, and pavement age conditions were evaluated. The binder properties were obtained from extracted binders testing on performance grading, multiple stress creep recovery, monotonic fracture test, and bending beam rheometer tests. The mixture properties included dynamic modulus, creep compliance, rutting resistance index from Hamburg wheel tracking test result, and fracture parameters from indirect tensile tests. Overall, the results showed that the binder PG correlated strongly with mixture properties. For intermediate temperature, G*sinĪ“ value of binder did not correlate well with any properties of mixtures. Shear strength of binder was found to correlate well with vertical failure deformation as well as the fracture work density of the mixture. For low temperature, m-value based low temperature PG correlated well with creep compliance of mixture, as well as vertical failure deformation. Another significant finding from this study was that shear strain would help identify polymer in asphalt binder.

Supplemental Notes:

This paper was sponsored by TRB committee AFK50 Standing Committee on Structural Requirements of Asphalt Mixtures.

Report/Paper Numbers:

18-03436

Language:

English

Authors:

Wu, Shenghua
Zhang, Weiguang
Shen, Shihui
Muhunthan, Balasingam

Pagination:

15p

Publication Date:

2018

Conference:

Transportation Research Board 97th Annual Meeting

Location: Washington DC, United States
Date: 2018-1-7 to 2018-1-11
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; Photos; References; Tables

Geographic Terms:

United States

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-03436

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 10:51AM