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Title:

Analysis of Impacts of Specimen Type on Dynamic Modulus and Predicted Pavement Performance

Accession Number:

01474869

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

This study focused on determining the impacts of specimen type on dynamic modulus and flexible pavement predicted performance. Mixtures that were evaluated included both commonly used dense-graded asphalt and those modified with emerging technologies. Dynamic modulus (|E*|) data was measured with two different test methods (IDT and Uniaxial Compression) and then analyzed using prediction tools (Mechanistic Empirical Pavement Design Guide [MEPDG] software, Quality Related Specification Software [QRSS], and the Asphalt Mixture Performance Tester [AMPT] Quality Assurance Program). Pavement distresses that were predicted included rutting in the surface layer as well as fatigue cracking. Performance predictions based on |E*| data from laboratory reheated and compacted specimens were equivalent to those resulting from the plant-compacted and field-compacted specimens. The results suggested that it may not be necessary to require plant-compacted or field-compacted asphalt specimens. A comparison of the different analysis tools also suggested that the MEPDG can be used effectively with Level 2 inputs, in lieu of requiring Level 1 inputs, to predict the service life of flexible pavements. By performing a parametric analysis, it was established that the MEPDG-predicted distresses were reasonable and the MEPDG may prove an effective substitute for the QRSS software. The data supported that transportation agencies can choose their preferred test method and specimen type and expect similar performance based on the pavement distresses predicted. It was recommended that agencies should select their method based upon the type of pavement distress most likely to occur at the design location.

Supplemental Notes:

This paper was sponsored by TRB committee AFD60 Flexible Pavement Design.

Monograph Accession #:

01470560

Report/Paper Numbers:

13-0724
13-0724

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Guercio, Maria Chiara
McCarthy, Leslie Ann
Bennert, Thomas A
DeJarnette, Van

Pagination:

14p

Publication Date:

2013

Conference:

Transportation Research Board 92nd Annual Meeting

Location: Washington DC, United States
Date: 2013-1-13 to 2013-1-17
Sponsors: Transportation Research Board

Media Type:

Digital/other

Features:

Figures; References; Tables

Subject Areas:

Highways; Pavements; I22: Design of Pavements, Railways and Guideways

Source Data:

Transportation Research Board Annual Meeting 2013 Paper #13-0724

Files:

TRIS, TRB, ATRI

Created Date:

Feb 5 2013 12:16PM