A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Technique

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dc.contributor.authorXu, Huiningen
dc.contributor.authorLi, Hengzhenen
dc.contributor.authorTan, Yiqiuen
dc.contributor.authorWang, Linbingen
dc.contributor.authorHou, Yueen
dc.contributor.departmentCivil and Environmental Engineeringen
dc.date.accessioned2018-01-25T16:50:23Zen
dc.date.available2018-01-25T16:50:23Zen
dc.date.issued2018-01-23en
dc.date.updated2018-01-24T21:03:35Zen
dc.description.abstractThe thermodynamic behavior of asphalt mixtures is critical to the engineers since it directly relates to the damage in asphalt mixtures. However, most of the current research of the freeze-thaw damage of asphalt mixtures is focused on the bulk body from the macroscale and lacks a fundamental understanding of the thermodynamic behaviors of asphalt mixtures from the microscale perspective. In this paper, to identify the important thermodynamic behaviors of asphalt mixtures under freeze-thaw loading cycle, the information entropy theory, an X-ray computerized tomography (CT) scanner and digital image processing technology are employed. The voids, the average size of the voids, the connected porosity, and the void number are extracted according to the scanned images. Based on the experiments and the CT scanned images, the information entropy evolution of the asphalt mixtures under different freeze-thaw cycles is calculated and the relationship between the change of information entropy and the pore structure characteristics is established. Then, the influences of different freezing and thawing conditions on the thermodynamic behaviors of asphalt mixtures are compared. The combination of information entropy theory and CT scanning technique proposed in this paper provides an innovative approach to investigate the thermodynamics behaviors of asphalt mixtures and a new way to analyze the freeze-thaw damage in asphalt mixtures.en
dc.description.versionPublished versionen
dc.format.mimetypeapplication/pdfen
dc.identifier.citationXu, H.; Li, H.; Tan, Y.; Wang, L.; Hou, Y. A Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Technique. Entropy 2018, 20, 68.en
dc.identifier.doihttps://doi.org/10.3390/e20020068en
dc.identifier.urihttp://hdl.handle.net/10919/81919en
dc.language.isoenen
dc.publisherMDPIen
dc.rightsCreative Commons Attribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjectasphalt mixturesen
dc.subjectfreeze-thaw damageen
dc.subjectX-ray CT imageen
dc.subjectinformation entropyen
dc.subjectmicroscaleen
dc.titleA Micro-Scale Investigation on the Behaviors of Asphalt Mixtures under Freeze-Thaw Cycles Using Entropy Theory and a Computerized Tomography Scanning Techniqueen
dc.title.serialEntropyen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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