Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/14216

TitleDesign and evaluation of the bearing capacity of high modulus asphalt concrete by means of a performance-based approach
Author(s)Capitão, Silvino Dias
Pais, Jorge C.
Santos, Luís Picado
KeywordsBituminous mixtures
Fatigue behaviour assessment
High modulus asphalt concrete
Mixture design
Rutting resistance
Stiffness prediction
Issue date2003
Abstract(s)Pavement damage, induced by repeated passing of traffic coupled with climatic conditions, has a significant influence on the durability of roads. To improve the service life of pavements, innovative materials have to be used, with the aim of producing bituminous layers which could better resist distress phenomena, namely resistance to fatigue and to permanent deformation. Therefore, a project concerning the rehabilitation of a structural layer by using a high modulus bituminous mixture has been carried out. During the first stage, this study involved the laboratory design of the mix by conducting performance tests and constructing trial sections on the EN14 (Portuguese national road 14). In the next stage, specimens extracted from trial sections were submitted to a fundamental test (four-point bending) and a traffic simulation test (wheel tracking) to select the work mix formula to make the road base layer on the EN14. Finally, by using a compaction method which reproduces volumetric conditions obtained in the field, prismatic and cylindrical specimens have been produced in the laboratory. For several temperatures and loading conditions, fundamental tests have been performed (repetitive four-point bending and dynamic creep tests).
TypeConference paper
URIhttp://hdl.handle.net/1822/14216
Peer-Reviewedyes
AccessOpen access
Appears in Collections:CEC-VC - Comunicações a Conferências Internacionais


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