2022
DOI: 10.14311/cej.2022.04.0049
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Influence Analysis of Natural Vibration Characteristics of Steel Box Girder With Single Cable Face and Large Cantilever

Abstract: In recent years, there have been cases of strengthening bridge structures with polyurethane cement mortar. To further explore the properties of polyurethane materials, the effects of emery, lime, quartz sand and cement on the mechanical properties of polyurethane powder composites are studied by three-point flexural test. In the flexural test, the polyurethane cement composite formed a control group by changing the content of polyester polyol. The flexural strength and ductility are improved to a certain exten… Show more

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