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Title:

Warm-Mix Asphalt Laboratory Permanent Deformation Performance in State of Pennsylvania: Case Study

Accession Number:

01333333

Record Type:

Component

Abstract:

Permanent deformation has been recognized as one of the primary distresses in asphalt pavements especially in hot climates. A Warm-Mix Asphalt (WMA) mixture is composed of air voids, asphalt binder, aggregates, and a WMA technology. The permanent deformation performance of WMA mixtures is attributed to mixture properties as well as the amount of plant aging that occurs during production. This paper presents the laboratory permanent deformation resistance potential of WMA mixtures used in the State of Pennsylvania. Four plant produced WMA mixtures with identical volumetric properties and different WMA technologies (i.e., Advera®, Sasobit®, LEA, and Gencor) were included in the study. The stiffness and deformation resistance behavior of these WMA additives as well as performance grade verification were also evaluated. The Mobile Asphalt Testing Laboratory (MATL) prepared a mix design replication of plant produced HMA control mix. Performance tests, namely the flow number and Hamburg tests were performed to evaluate the permanent deformation resistance potential of the asphalt mixtures. Ranking of the asphalt mixtures was provided based on the rutting resistance derived from these tests. In general, the MATL mix design replicate and plat produced HMA mixtures measured better permanent deformation resistance test results followed by WMA/Sasobit® mixture. Compared to the HMA control mixtures, the WMA mixtures were found to be susceptibility to rutting due to less aging during production particularly at lower testing temperatures. In conclusion, the findings from this study can assist State DOTs and agencies to evaluate pavement structures and design rut resistance WMA mixtures.

Monograph Accession #:

01329018

Report/Paper Numbers:

11-2784

Language:

English

Corporate Authors:

Transportation Research Board

500 Fifth Street, NW
Washington, DC 20001 United States

Authors:

Zelelew, Habtamu
Paugh, Chuck
Corrigan, Matthew R

Pagination:

28p

Publication Date:

2011

Conference:

Transportation Research Board 90th Annual Meeting

Location: Washington DC, United States
Date: 2011-1-23 to 2011-1-27
Sponsors: Transportation Research Board

Media Type:

DVD

Features:

Figures (7) ; References (6) ; Tables (6)

Uncontrolled Terms:

Flow number test

Geographic Terms:

Pennsylvania

Subject Areas:

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

Source Data:

Transportation Research Board Annual Meeting 2011 Paper #11-2784

Files:

TRIS, TRB

Created Date:

Feb 17 2011 6:17PM