Bending Performance of Epoxy Adhesive Joints of Prefabricated Concrete Elements
نویسندگان
چکیده
The assembly construction of prefabricated UHPC elements can well balance quality reliability and convenience, thus it has excellent application prospects in bridge engineering. joints between are the key to ensuring overall force performance structure, which directly determine load-bearing capacity life structure. To clarify bending behavior epoxy adhesive elements, four groups 12 tests were carried out with different interface treatment forms as parameters. failure modes, load-deflection curves, ultimate strength investigated. results reveal that interfacial modes mainly include stripping epoxy-UHPC surface, steel fibers fine aggregates into surface by pulling out, tensile damage at root teeth on side keyway interface. curves all specimens exhibit two-fold lines form. load tends rise linearly during loading phase, there is no yielding phase before failure. load-carrying specimen lost immediately after failure, reliable residual available except for In addition, rough interface, groove respectively improved ?24.02, 2.34, 4.64%, compared natural So recommended joint take form Finally, a simplified model keytooth proposed, calculation formula flexural bearing established based principal Mohr’s circle, experimental theoretical analysis. mean ratio proposed equation was 0.925 standard deviation 0.065.
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ژورنال
عنوان ژورنال: Frontiers in Materials
سال: 2022
ISSN: ['2296-8016']
DOI: https://doi.org/10.3389/fmats.2022.859532