Experimental evaluation of shear connectors using reactive powder concrete under natural curing condition

He, Shaohua; Mosallam, Ayman; Fang, Zhi; Sun, Xiaolong; Su, Jie

doi:10.1016/j.conbuildmat.2018.10.063

Cited by 11 publications

(2 citation statements)

References 19 publications

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“…It can be found from Figure 8 a that as the diameter of the penetrating rebars, respectively, increased from 12 mm to 16 mm and from 16 to 20 mm, the maximum loads of the connectors increased by 34.8 and 20.6%, respectively, while there is no significant variation in initial shear stiffness. This indicates that the increase in the diameter of the penetrating rebars would obviously improve the shear capacity of the connectors, which is mainly because that as the main contributor to the shear resistance of PBL connectors, the increase in diameter of the penetrating rebars can effectively improve their shear strength [ 33 ]. However, with the increase of the diameter of penetrating rebars, the increase magnitude of the maximum loads of connectors decreased gradually, which can be explained by that the decrease in the area of the concrete dowels due to the increase in the diameter of the penetrating rebars has a negative impact on the shear resistance of PBL connectors.…”

Section: Analysis Of Test Resultsmentioning

confidence: 99%

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

Liu

Xue

et al. 2021

Materials

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Perfobond rib (PBL) shear connectors, made up of the perforated steel plates with the penetrating rebars passing through the holes, are extensively adopted in steel-concrete composite structures for their excellent performance. The adequate understanding of mechanical properties for PBL connectors is of great significance for their reasonable design. In this study, a push out experiment, including 12 specimens with the parameters of concrete strength, diameter of penetrating rebars and the number of holes on perforated steel plate, was performed to explore the mechanical behavior of PBL connectors with steel fiber high strength concrete (SFHSC). The experimental results showed that the shear capacity of the PBL connectors increased with the increase in concrete strength, diameter of the penetrating rebars and the number of holes. Furthermore, a general prediction formula for the shear capacity of PBL connectors was developed, which considers the shear contribution of concrete dowels, concrete end-bearing, interfacial bonding between the perforated steel plates and concrete and the penetrating rebars as well as the enhancement effect of steel fibers. The prediction results of the equation are in good agreement with the experimental data and could provide a reference for the design of PBL connectors.

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Section: Analysis Of Test Resultsmentioning

confidence: 99%

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

Liu

Xue

et al. 2021

Materials

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“…However, the mechanical properties of RPCFST may change under high-temperature curing environments (Chen et al, 2018; Li et al, 2017). Therefore, an exploratory experiment was carried out based on previous literature Feylessoufi et al (1996) and He et al (2018). Finally, the mixing ratio of RPC100, RPC120 and RPC140 were determined, and the curing was carried out over water at normal temperature for 90 days.…”

Section: Experimental Investigationmentioning

confidence: 99%

Behavior of CFRP-confined reactive powder concrete-filled steel tubes under axial compression

Song

Jiao

2020

Advances in Structural Engineering

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Reactive powder concrete-filled steel tubes (RPCFSTs) have become an important research target in recent years. In engineering applications, RPCFSTs can provide superior vertical components for high-rise and tower buildings, thereby enabling developers to provide more floor space. However, this type of composite structure is prone to inelastic outward local buckling. The use of carbon fiber reinforced polymer (CFRP) wrapping to suppress such local buckling has shown great potential in limited test results. This paper presents experimental results concerning the axial compression of CFRP-confined reactive powder concrete-filled circular steel tubes (CF-RPCFSTs). We included 18 specimens in our experimental investigation, varying the number of CFRP layers, steel tube thickness, and RPC strength. According to our test results, CF-RPCFSTs exhibit compression shear failure and drum-shaped failure. The CFRP wrap can effectively enhance bearing capacity and postpone local buckling of the steel tube. In addition, three-layer CFRP-confined RPC-filled thin-wall steel tubes are suitable for engineering. We also propose a model to calculate the bearing capacity of CF-RPCFSTs. Compared to the existing model of CFRP-confined concrete-filled steel tubes, the results obtained using the proposed model are in good agreement with our experimental results.

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Solving shrinkage problem of ultra-high-performance concrete by a combined use of expansive agent, super absorbent polymer, and shrinkage-reducing agent

Luming

Fang

Huang

et al. 2022

Composites Part B: Engineering

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Experimental evaluation of shear connectors using reactive powder concrete under natural curing condition

Cited by 11 publications

References 19 publications

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

Experimental Study on the Mechanical Properties of Perfobond Rib Shear Connectors with Steel Fiber High Strength Concrete

Behavior of CFRP-confined reactive powder concrete-filled steel tubes under axial compression

Solving shrinkage problem of ultra-high-performance concrete by a combined use of expansive agent, super absorbent polymer, and shrinkage-reducing agent

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