Composite Pavement Systems: Synthesis of Design and Construction Practices

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dc.contributorVirginia Tech Transportation Instituteen
dc.contributorVirginia Techen
dc.contributor.authorFlintsch, Gerardo W.en
dc.contributor.authorDiefenderfer, Brian K.en
dc.contributor.authorOrlando Nunezen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.contributor.departmentVirginia Tech Transportation Instituteen
dc.date.accessed2013-11-21en
dc.date.accessioned2014-03-19T18:30:13Zen
dc.date.available2014-03-19T18:30:13Zen
dc.date.issued2008-11-01en
dc.description.abstractComposite pavement systems have shown the potential for becoming a cost-effective pavement alternative for highways with high and heavy traffic volumes, especially in Europe. This study investigated the design and performance of composite pavement structures composed of a flexible layer (top-most layer) over a rigid base. The report compiles (1) a literature review of composite pavement systems in the U.S. and worldwide; (2) an evaluation of the state-of-the-practice in the U.S. obtained using a survey; (3) an investigation of technical aspects of various alternative composite pavement systems designed using available methodologies and mechanistic-empirical pavement distress models (fatigue, rutting, and reflective cracking); and (4) a preliminary life cycle cost analysis (LCCA) to study the feasibility of the most promising composite pavement systems. Composite pavements, when compared to traditional flexible or rigid pavements, have the potential to become a cost-effective alternative because they may provide better levels of performance, both structurally and functionally, than the traditional flexible and rigid pavement designs. Therefore, they can be viable options for high volume traffic corridors. Countries, such as the U.K. and Spain, which have used composite pavement systems in their main road networks, have reported positive experiences in terms of functional and structural performance. Composite pavement structures can provide long-life pavements that offer good serviceability levels and rapid, cost-effective maintenance operations, which are highly desired, especially for high-volume, high-priority corridors. Composite pavements mitigate various structural and functional problems that typical flexible or rigid pavements tend to present, such as hot-mix asphalt (HMA) fatigue cracking, subgrade rutting, portland cement concrete (PCC) erosion, and PCC loss of friction, among others. At the same time, though, composite systems are potentially more prone to other distresses, such as reflective cracking and rutting within the HMA layer. Premium HMA surfaces and/or reflective cracking mitigation techniques may be required to mitigate these potential problems. At the economic level, the results of the deterministic agency-cost LCCA suggest that the use of a composite pavement with a cement-treated base (CTB) results in a cost-effective alternative for a typical interstate traffic scenario. Alternatively, a composite pavement with a continuously reinforced concrete pavement (CRCP) base may become more cost-effective for very high volumes of traffic. Further, in addition to savings in agency cost, road user cost savings could also be important, especially for the HMA over CRCP composite pavement option because it would not require any lengthy rehabilitation actions, as is the case for the typical flexible and rigid pavements.en
dc.description.sponsorshipVirginia Department of Transportation 85414en
dc.description.sponsorshipFederal Highway Administration 85414en
dc.format.extent58 pagesen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationGerardo W. Flintsch, Ph.D., P.E., Brian K. Diefenderfer, Ph.D., P.E., and Orlando Nunez. "Composite Pavement Systems: Synthesis of Design and Construction Practices," Virginia Transportation Research Council 530 Edgemont Road Charlottesville, VA 22903, Report No. FHWA/VTRC 09-CR2, Nov. 2008.en
dc.identifier.govdocFHWA/VTRC 09-CR2en
dc.identifier.urihttp://hdl.handle.net/10919/46667en
dc.identifier.urlhttp://www.virginiadot.org/vtrc/main/online_reports/pdf/09-cr2.pdfen
dc.language.isoenen
dc.publisherVirginia Center for Transportation Innovation and Researchen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectComposite pavementen
dc.subjectPavement type selectionen
dc.subjectSemi-rigid pavementen
dc.subjectMechanistic evaluationen
dc.titleComposite Pavement Systems: Synthesis of Design and Construction Practicesen
dc.typeTechnical reporten
dc.type.dcmitypeTexten

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