Effect of RAP and fibers addition on asphalt mixtures with self-healing properties gained by microwave radiation heating

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dc.contributor.authorGonzález, Alvaro
dc.contributor.authorNorambuena-Contreras, José
dc.contributor.authorStorey, L.
dc.contributor.authorSchlangen, E.
dc.date.accessioned2018-02-23T20:11:07Z
dc.date.available2018-02-23T20:11:07Z
dc.date.issued2017
dc.description.abstractMicrowave heating of asphalt mixtures containing metal fibers is a promising technology for asphalt pavement rehabilitation. The main characteristic of these types of mixtures is that they have the ability to self-heal their cracks when external microwave heating is applied. Prior to this study, the assessment of crack-healing has only been conducted in mixtures prepared with virgin aggregate materials. This paper, however, presents results of research in which the effect of adding reclaimed asphalt pavement (RAP) and metallic fibers was studied. The volumetric properties of the mixtures indicated that the air voids content increased with the fiber content. The indirect tensile stiffness modulus of the mixtures increased with the addition of RAP. Clusters of fibers were found in the mixtures by means of CT-Scan analysis. The general effect of RAP addition was a decrease in the healing of the mixtures, and the effect of fibers was an increase in the healing. Overall, it is concluded that asphalt mixtures with RAP and metal fibers have the potential for crack-healing via microwave heating.
dc.format.extent10 p.
dc.identifier.citationConstruction and Building Materials Volume 159, 20 January 2018, Pages 164-174
dc.identifier.urihttp://hdl.handle.net/11447/2002
dc.identifier.urihttps://doi.org/10.1016/j.conbuildmat.2017.10.070Get rights and content
dc.language.isoen_US
dc.subjectAsphalt mixture
dc.subjectMetallic fibers influence
dc.subjectCrack-healing
dc.subjectRAP addition
dc.subjectMicrowave heating
dc.subjectX-ray microtomography
dc.titleEffect of RAP and fibers addition on asphalt mixtures with self-healing properties gained by microwave radiation heating
dc.typeArtículo

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