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- W4386290433 abstract "Improper operation during construction and damages in long-term use environments will result in the shear walls being unable to meet seismic design and safety requirements. In order to further explore the impact of modified reactive powder concrete (MRPC) surface strengthening on the bending performance of shear walls, four shear walls were subjected to low cyclic loading tests. The effects of single-sided strengthening, double-sided strengthening, and different strengthening thicknesses on their seismic performance such as failure mode, deformation capacity, energy dissipation capacity, and stiffness degradation have been studied. The results show that the failure modes of four shear wall specimens were bending failure. Horizontal and oblique cracks appeared at the bottom and middle of the specimen, respectively, and the concrete at the corner was crushed and peeled off. For the specimen strengthened by MRPC, the strengthening layer was slightly warped, and the number of cracks is significantly reduced, which can effectively avoid the brittle failure of the specimen. The strengthening layer formed a good restraint on the internal concrete. MRPC can effectively improve the seismic performance of low bending strength concrete shear walls, and the ductility was far exceeded the expectations of the experiment. Double-sided strengthening was better than single-sided strengthening. Increasing the strengthening thickness can improve the flexural cracking capacity, but due to the interface between the shear wall and MRPC, it had little effect on the yield, peak and ultimate capacity. In addition, excessive thickness will reduce the ductility and energy dissipation capacity of the specimen." @default.
- W4386290433 created "2023-08-31" @default.
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- W4386290433 date "2023-11-01" @default.
- W4386290433 modified "2023-10-10" @default.
- W4386290433 title "Experimental study on seismic performance of low strength shear walls strengthened with modified reactive powder concrete" @default.
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- W4386290433 doi "https://doi.org/10.1016/j.istruc.2023.105094" @default.
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