Experimental Investigation of Direct Tension Bond Performance of High-Strength Concrete and Ultrahigh-Performance Concrete Connections

Semendary, Ali A.; Hamid, Waleed K.; Khoury, Issam; Steinberg, Eric P.; Walsh, Kenneth K.

doi:10.1061/(asce)mt.1943-5533.0002800

Cited by 29 publications

(4 citation statements)

References 12 publications

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“…18,19 Furthermore, the bond between UHPC and NC has been proven reliable, ensuring effective load transfer and composite action between the materials. 20 Many scholarly investigations have employed scaled beam specimens in their research, providing a consolidated understanding of UHPC beam behavior. However, it is essential to recognize that the ultimate capacities obtained from these investigations may exhibit an overestimation of UHPC beams' actual performance as engineering structures.…”

Section: Introductionmentioning

confidence: 99%

“…The findings indicate that UHPC significantly enhances the flexural strength and stiffness of the NC component, leading to improved overall structural performance 18,19 . Furthermore, the bond between UHPC and NC has been proven reliable, ensuring effective load transfer and composite action between the materials 20 . Many scholarly investigations have employed scaled beam specimens in their research, providing a consolidated understanding of UHPC beam behavior.…”

Section: Introductionmentioning

confidence: 99%

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Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

Sun,

Luo,

Xiao

et al. 2023

Structural Concrete

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Ultra‐high performance concrete (UHPC) prefabricated beams are competitive in accelerated bridge construction. However, their broader application has been hindered by limited large‐scale tests and inaccurate design methods. To fill this gap, the authors conducted an experimental investigation on the shear and flexural performance of UHPC pi‐beams using two full‐scale specimens. One specimen was a precast UHPC beam, while the other was a composite beam with a normal concrete slab on the UHPC beam. The primary focus was on crack propagation, ultimate capacities, and failure modes. To complement the experimental findings, the extended finite element method (XFEM) was developed as a numerical approach. Nevertheless, relying solely on XFEM to understand real structural behavior is prone to misinterpretations. Moreover, the shear and flexural capacities were evaluated using existing codes and compared with the experimental results. The comparisons revealed that the predictions of shear capacities were at least 15% lower than the experimental values, whereas the flexural capacities showed acceptable agreement. To address this, the authors introduced the limit equilibrium method, leading to a more accurate prediction of shear capacity for UHPC beams with a deviation of <2%.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

Sun,

Luo,

Xiao

et al. 2023

Structural Concrete

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“…Yan et al [ 11 ] further explored this in 2019, investigating the axial compressive mechanical properties of square UCFSTcs and revealing the significant impact of the interaction between steel tubes and UHPC on ductility. Similarly, Semendary et al [ 12 ] conducted a study on the bonding performance between high-strength concrete (HSC) and UHPC at different ages and with different surface treatments, providing valuable data for predicting bond and slip relationships. More recent investigations, such as those by Hoang et al [ 13 ], Chang et al [ 14 ], Xu et al [ 15 ], and Wei et al [ 16 ], have expanded our understanding of UCFSTcs under axial compression.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Full-Scale UHPC-Filled Steel Tube Composite Columns under Axial Load

Cheng

Wang

et al. 2023

Materials

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In the realm of civil engineering, ultra-high-performance concrete-filled steel tube composite columns (UCFSTCs) constitute a new type of building material and structure, exhibiting high compressive strength and commendable durability. Given their promising characteristics, the prospects of their application are highly promising and are worthy of further exploration. However, current research has primarily focused on scaled-down specimens, thereby limiting a broader understanding of UCFSTCs’ full-scale mechanical properties in real-world scenarios. This study aimed to investigate the mechanical properties of full-scale UHPC-filled steel tube composite columns (FUCFSTCs) in practical engineering applications. With the steel tube strength, steel tube thickness, concrete strength, aspect ratio, and steel tube diameter used as design parameters and the finite element software ABAQUS as the analytical tool, a total of 21 FUCFSTCs were designed and analyzed. Through a comparison with experimental curves, the rationality of both the material constitutive model and finite element model was verified, and the maximum error was 6.54%. Furthermore, this study analyzed the influence of different design parameters on FUCFSTCs’ ultimate bearing capacity, ductility coefficient, and the stress–strain relationship of their concrete. The ductility coefficient remained around 1.3, and the cross-sectional size had the greatest impact on the bearing capacity of the composite column, with a maximum increase of 145.90%. Additionally, this paper provides an in-depth analysis of FUCFSTCs’ mechanical behavior, failure mode, and stress process under an axial load. In conclusion, this research proposes an axial compression limit bearing capacity formula for FUCFSTCs via statistical regression, with a maximum error of 3.04%, meeting engineering accuracy requirements. Consequently, this study lays a strong foundation for the future application of FUCFSTCs in practical engineering.

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“…The prefabricated structure has the advantages of short construction time, controllable construction quality, and less environmental pollution (Islamaj, 2018; Priya et al, 2018; Tomek, 2017). The sufficient bond strength between the connecting reinforcement and the high-strength grouting material is the key to ensuring the prefabricated structures’ safety and service performance (Haber et al, 2018b; Seibert et al, 2019; Semendary et al, 2019; Zhang et al, 2017). However, the prefabricated structure has different characteristics than the cast-in-place structure (Xia et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

Shah

Yao

2022

Advances in Structural Engineering

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This paper presents an experimental study of a novel composite structure used in prefabricated bridges. Corrugated pipes were used to improve the interface bond performance of the structure because of their excellent stiffening effect on the grouting material. Interface bond performance of overlap joints within corrugated pipes was explored by the load-displacement curve and load-strain curves. Ultra-High Performance Concrete (UHPC) and high-strength mortar were used as grouting materials. The diameter of steel bars, UHPC, high-strength mortar, strength grades of surrounded concrete, anchorage length, the diameter of the corrugated pipe, and lap length was taken as influential factors. Twenty specimens were designed for the pull-out test by using a larger cover thickness. The failure modes and the influence of different influential factors on the interface bond strength of each specimen were analyzed. The results show that the bond performance between UHPC and reinforcement was better than that of high-strength mortar and normal concrete, which can effectively improve the bond strength and reduce the basic anchorage length of reinforcement besides the design size of prefabricated members. In addition, the differences in anchorage length and lap length between the corrugated pipe grouting reinforcement were compared to the different specifications and prefabricated concrete members. Combined with the test phenomenon and analysis results, it is suggested that the anchorage length and lap length of connecting reinforcement should be reconsidered. Furthermore, the grouting effect under different diameters of corrugated pipe and reinforcement were compared. It is recommended that the corrugated pipe diameter should be four times that of the overlapping grouting reinforcement.

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Experimental Investigation of Direct Tension Bond Performance of High-Strength Concrete and Ultrahigh-Performance Concrete Connections

Cited by 29 publications

References 12 publications

Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

Study on flexural and shear performance of ultra‐high performance concrete prefabricated pi‐beams

Mechanical Properties of Full-Scale UHPC-Filled Steel Tube Composite Columns under Axial Load

Interface bond strength performance of overlap joints within the corrugated pipes used in prefabricated bridges

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