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Title:

Modification of the Resistivity-Rutting Model to Use Recoverable Creep Compliance

Accession Number:

01550342

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States
Order URL: http://www.trb.org/Main/Blurbs/173584.aspx

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Order URL: http://worldcat.org/isbn/9780309369312

Abstract:

The resistivity-rutting model was developed as part of NCHRP Projects 9-25 and 9-31 and later was improved as part of Airfield Asphalt Pavement Technology Program Project 04-02. The model was intended to provide insight into the effects of mixture composition and binder properties on resistance to permanent deformation, but the use of |G*|/sin δ to characterize binder flow properties did not accurately capture the performance of modified binders, so an empirical correction factor was needed to address this problem. The modified model presented in this paper incorporated Jnr from the multiple stress creep and recovery (MSCR) test, in place of |G*|/sin δ, as an indicator of binder resistance to permanent deformation. This adjustment provided a more theoretically correct and more accurate means to characterize asphalt binder flow properties for use in the resistivity-rutting model. Because a large number of pavement test sections does not yet exist to provide information on rutting, including MSCR test data, the approach used here was to develop an empirical equation that related J<subscript>nr to standard dynamic shear rheometer test data. This relationship was then used to estimate J<subscript>nr for a database that consisted mostly of the original data used to develop the resistivity-rutting model. The recalibrated model appeared to have an accuracy similar to that of the previous version of the model but properly predicted the performance of modified binders without empirical correction factors.

Monograph Accession #:

01587029

Report/Paper Numbers:

15-2890

Language:

English

Authors:

Christensen, Donald
Bonaquist, Ramon F

Pagination:

pp 48–56

Publication Date:

2015

Serial:

Transportation Research Record: Journal of the Transportation Research Board

Issue Number: 2505
Publisher: Transportation Research Board
ISSN: 0361-1981

ISBN:

9780309369312

Media Type:

Print

Features:

Figures (6) ; References (17) ; Tables (6)

Identifier Terms:

Multiple Stress Creep Recovery

Subject Areas:

Highways; Materials; Pavements; I31: Bituminous Binders and Materials

Files:

TRIS, TRB, ATRI

Created Date:

Dec 30 2014 12:58PM

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