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Title:

Development of Asphalt Pavement Analyzer Design Criteria for Surface Mixtures

Accession Number:

01090200

Record Type:

Component

Availability:

Transportation Research Board Business Office

500 Fifth Street, NW
Washington, DC 20001 United States

Abstract:

Premature rutting of asphalt pavements is a serious concern experienced in recent years due to the increased traffic and wheel loads. The most part of early rutting occurs within the first year of the service life of the pavements. Though premature rutting does not indicate the structural failure of the pavement, it is a major serviceability failure. Thus, it is important to estimate the rutting potential of a mixture before construction. There are several accelerated loaded wheel testers in practice to evaluate the rutting potential of the asphalt concrete mixtures. A growing number of highway agencies, contractors, and commercial testing laboratories use the Asphalt Pavement Analyzer (APA) for HMA testing. The APA test is not a fundamental test for permanent deformation. It is a simulative test, simple to perform and uses cylindrical specimens compacted using the Superpave gyratory compactor (SGC). Various studies have demonstrated the performance of the APA. This paper compares the APA test results with the repeated shear at constant height test results obtained on a large variety of asphalt mixtures. Correlations were developed between the results of Shear and APA tests and further APA rut depth criteria were developed, which can be used to characterize the rut resistance of surface mixtures. The regression models were fine-tuned to characterize the rutting behavior of each individual mix by considering effects of test temperatures, aggregate types and traffic volumes. It was observed that presence of natural sand increases the rutting potential of a mixture. Granite aggregate was slightly more rut resistant than limestone aggregate in case of mixtures not containing any natural sand.

Monograph Accession #:

01084478

Report/Paper Numbers:

08-0782

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Harikrishnan, K I
Kadayam, Vijay V
Khosla, N Paul

Pagination:

22p

Publication Date:

2008

Conference:

Transportation Research Board 87th Annual Meeting

Location: Washington DC, United States
Date: 2008-1-13 to 2008-1-17
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (5) ; References (7) ; Tables (11)

Subject Areas:

Design; Highways; Materials; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I31: Bituminous Binders and Materials

Source Data:

Transportation Research Board Annual Meeting 2008 Paper #08-0782

Files:

TRIS, TRB

Created Date:

Jan 29 2008 3:06PM