Determination of NSC-UHPC interface properties for numerical modeling of UHPC-strengthened concrete beams and slabs

Engineering Structures(2023)

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摘要
•Complete shear and tensile laws for repair interface of NSC-UHPC beams are proposed and validated.•CF and IS models were developed respectively for good and poor surface preparation of repair interface.•Replication of NSC-UHPC beams behavior is significantly improved by using CF and IS models.•CF model most significant parameters are initial and peak cohesion stresses, shear stiffness and tensile stiffness.•IS model most significant parameter is the shear stiffness.
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关键词
concrete beams,slabs,nsc-uhpc,uhpc-strengthened
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