Experimental study on seismic performance of low strength shear walls strengthened with modified reactive powder concrete

Wang, Xin; Huang, Ding; Gao, YongChao; Li, LingZhi

doi:10.1016/j.istruc.2023.105094

Structures

2023

DOI: 10.1016/j.istruc.2023.105094

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Experimental study on seismic performance of low strength shear walls strengthened with modified reactive powder concrete

Xin Wang,

Ding Huang,

YongChao Gao

et al.

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2023

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Seismic Performance of Assembled Beam–Column Connections with Modified Reactive Powder Concrete under Different Steel Fiber Types in the Critical Cast-in-Place Regions

Wang,

Huang,

Gao

et al. 2023

Applied Sciences

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Reactive powder concrete (RPC) and reinforcements have ultra-high bonding strength and, thus, a potential advantage in improving the connection performance of assembled structures. In this study, four assembled beam–column connections using modified reactive powder concrete (MRPC) under different steel fiber types in critical cast-in-place regions, as well as a monolithic concrete beam–column connection, were tested under low-cyclic loading. The results show that MRPC application in critical cast-in-place region connections significantly improved damage tolerance capacity and load-carrying capacity. End-bent short steel fibers had the most significant crack-resistance effect. Using end-bent long fibers could improve an assembled connection’s ductility by 102%. Straight steel fibers were easily pulled out and had the least inhibitory effect on cracks. Connections using wavy steel fiber had the lowest initial stiffness and shear capacity but the highest energy dissipation capacity. Using 30 mm end-bent steel fiber is recommended for comprehensive seismic performance. The Chinese code overestimated MRPC’s shear contribution. MRPC assembled connections’ crack capacity and shear capacity models were established.

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Seismic Performance of Assembled Beam–Column Connections with Modified Reactive Powder Concrete under Different Steel Fiber Types in the Critical Cast-in-Place Regions

Wang,

Huang,

Gao

et al. 2023

Applied Sciences

Self Cite

View full text Add to dashboard Cite

show abstract

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Experimental study on seismic performance of low strength shear walls strengthened with modified reactive powder concrete

Cited by 1 publication

References 21 publications

Seismic Performance of Assembled Beam–Column Connections with Modified Reactive Powder Concrete under Different Steel Fiber Types in the Critical Cast-in-Place Regions

Seismic Performance of Assembled Beam–Column Connections with Modified Reactive Powder Concrete under Different Steel Fiber Types in the Critical Cast-in-Place Regions

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