Experimental and numerical investigations on flexural performance of ultra-high-performance concrete (UHPC) beams with wet joints

Feng, Zheng; Li, Chuanxi; Ke, Lu; Yoo, Doo Yeol

doi:10.1016/j.istruc.2022.09.029

Cited by 20 publications

(10 citation statements)

References 29 publications

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“…Figure 1 shows the specimen shape and test load method for the direct tensile test. Feng [27] tested the interface bonding strength of wet joints using a direct tensile specimen; however, the eccentric load for the test was defective, affecting the reliability of the results. Zhang [28] and Hussein [29] reduced the eccentric load by installing rotatable ball hinges at the ends of the anchor.…”

Section: Direct Tensile Testmentioning

confidence: 99%

Section: Theories Of the Interfacial Bonding Shear Strengthmentioning

confidence: 99%

“…Wang [49] developed a shear calculation formula for the UHPC-NC interface considering the keyway effect based on Eurocode 2 [52]. The shear formula of the interface bonding strength of UHPC-NC with a changing interface roughness was derived by Feng [27]. Gopal [53], Yang [54], and Pan [55] investigated the keyway effect on the shear capacity of the UHPC-NC interface and deduced the shear formula considering the polygon-key bolt force based on shear friction theory.…”

Section: Theories Of the Interfacial Bonding Shear Strengthmentioning

confidence: 99%

“…Li [56] developed a shear formula based on the strengthening effect of steel fiber on the interface bonding shear strength. Feng [27] ) )( ( Gopal [53] Yang [54] Pan [55]…”

Section: Interface Roughnessmentioning

confidence: 99%

“…Existing concrete strength is an important factor of the interface bonding strength of old and new concrete [28,72,86]. Feng [27] investigated the effects of NC with different strength values on the interface bonding strength of UHPC-NC and NC-NC through split and slant shear tests (Figure 18). The test result revealed that the interface bonding strength of UHPC-NC increases with the existing concrete strength.…”

Section: Existing Concrete Strengthmentioning

confidence: 99%

See 4 more Smart Citations

Review of the Interfacial Bonding Properties between Ultrahigh-Performance Concrete and Normal Concrete

Yao

et al. 2023

Applied Sciences

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As a high-quality building material exhibiting excellent toughness and durability, ultrahigh-performance concrete (UHPC) is increasingly being used in the construction industry and as building reinforcement. During the reinforcement of existing concrete structures with UHPC, their interface is the weakest part of a structure. Interface bonding ensures the operation of two types of materials together. However, existing studies rarely report the bonding of the UHPC–normal concrete (NC) interface. Herein, the existing test methods and interface bonding mechanisms are summarized. Subsequently, the differences among relevant design codes are investigated by comparing different theoretical formulas. Important influencing factors of the reinforcement method, namely, interface roughness, fiber type and content, interface agent type and content, moisture content, existing concrete strength, cementitious material content, curing conditions, freeze–thaw cycles, and chloride ions, are also considered. Further, the enhancement mechanism of the characteristics of the UHPC–NC interface is clearly described. Finally, the shortcomings and application prospects of the interfacial bonding properties are highlighted.

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Section: Direct Tensile Testmentioning

confidence: 99%

Section: Theories Of the Interfacial Bonding Shear Strengthmentioning

confidence: 99%

Section: Theories Of the Interfacial Bonding Shear Strengthmentioning

confidence: 99%

“…Li [56] developed a shear formula based on the strengthening effect of steel fiber on the interface bonding shear strength. Feng [27] ) )( ( Gopal [53] Yang [54] Pan [55]…”

Section: Interface Roughnessmentioning

confidence: 99%