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dc.contributor.authorQiao, Pizhong
dc.contributor.authorZhou, Zhidong
dc.date.accessioned2018-08-09T18:14:09Z
dc.date.available2018-08-09T18:14:09Z
dc.date.issued2017-12-31
dc.identifier.urihttp://hdl.handle.net/11122/9581
dc.description.abstractThis study’s aim was to evaluate the freeze-thaw durability of shotcrete in cold regions and predict its long-term performance. One benchmark mix design from the WSDOT was chosen to prepare samples for performance evaluation. Shotcrete specimens were conditioned in accordance with ASTM C666. The long-term freeze-thaw performance after certain cycles was evaluated using the dynamic modulus of elasticity test (ASTM C215), fracture energy test (RILEM 50-FMC), and X-ray CT microstructure imaging analysis. Probabilistic damage analysis was conducted to establish the relation between the durability life and the damage parameter for different probabilities of reliability using the three-parameter Weibull distribution model. The fracture energy test was found to be a more sensitive test method than the dynamic modulus of elasticity for screening material deterioration over time and for capturing accumulative material damage caused by rapid freeze-thaw action, because of smaller durability factors (degradation ratios) obtained from the fracture energy test. X-ray CT imaging analysis is capable of detecting microcracks that form and pore evolution in the aggregate and interface transition zone of conditioned samples. Moreover, the continuum damage mechanic-based model shows potential in predicting long-term material degradation and the service life of shotcrete.en_US
dc.language.isoen_USen_US
dc.publisherCenter for Environmentally Sustainable Transportation in Cold Climatesen_US
dc.subjectshotcreteen_US
dc.subjectdurabilityen_US
dc.subjectfreezing and thawing cyclic conditioningen_US
dc.subjectDynamic Modulusen_US
dc.subjectfracture energyen_US
dc.subjectX-ray CTen_US
dc.subjectWeibull modelen_US
dc.titleFreeze-Thaw Durability and Long-Term Performance Evaluation of Shotcrete in Cold Regionsen_US
dc.typeTechnical Reporten_US
refterms.dateFOA2020-03-05T16:19:53Z


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