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Title:

Linking Chemical Compositions and Rheological Properties of Asphalt Binders

Accession Number:

01663686

Record Type:

Component

Abstract:

Asphalt binders and their chemical compositions vary widely based on the crude sources. Chemical modifications are often executed to attain certain rheological and chemical superiorities to these binders. These modifications involve complex chemistries, which hinder pavement professionals to choose the appropriateness of the binder. This study was intended for finding optimum dosages of the acid and relating the complex chemistries of selected asphalt binders to their mechanistic properties. The column chromatography technique was employed to record the compositional changes in acid and polymer modified binders originating from two selected crude sources (Canadian and Arabian). The Canadian crude binder was also evaluated for Reclaimed Asphalt Pavement (RAP) addition. There existed two different optimum levels of chemical modification for two crude-different binders. Some of the rheological properties were well correlated with the chemical compositions of the tested asphalt binders. RAP-blending induced instability in the colloidal structure of binders when high RAP binder was used.

Supplemental Notes:

This paper was sponsored by TRB committee AFK20 Standing Committee on Asphalt Binders.

Report/Paper Numbers:

18-06060

Language:

English

Authors:

Alam, Shahriar
Hossain, Zahid
Baumgardner, Gaylon

Pagination:

18p

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; References; Tables

Subject Areas:

Highways; Materials; Pavements

Source Data:

Transportation Research Board Annual Meeting 2018 Paper #18-06060

Files:

TRIS, TRB, ATRI

Created Date:

Jan 8 2018 11:34AM