Cyclic Behavior of Low Rise Concrete Shear Walls Containing Recycled Coarse and Fine Aggregates

Materials - Tập 10 Số 12 - Trang 1400
Qiyun Qiao1, Wanlin Cao2, Zhiwei Qian3, Xiangyu Li4, Wenwen Zhang5, Wenchao Liu6
1College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. [email protected].
2College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. [email protected].
3Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands. [email protected].
4College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. [email protected].
5College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. [email protected].
6College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China. [email protected].

Tóm tắt

In this study, the cyclic behaviors of low rise concrete shear walls using recycled coarse or fine aggregates were investigated. Eight low rise Recycled Aggregates Concrete (RAC) shear wall specimens were designed and tested under a cyclic loading. The following parameters were varied: replacement percentages of recycled coarse or fine aggregates, reinforcement ratio, axial force ratio and X-shaped rebars brace. The failure characteristics, hysteretic behavior, strength and deformation capacity, strain characteristics and stiffness were studied. Test results showed that the using of the Recycled Coarse Aggregates (RCA) and its replacement ratio had almost no influence on the mechanical behavior of the shear wall; however, the using of Recycled Fine Aggregates (RFA) had a certain influence on the ductility of the shear wall. When the reinforcement ratio increased, the strength and ductility also increased. By increasing the axial force ratio, the strength increased but the ductility decreased significantly. The encased brace had a significant effect on enhancing the RAC shear walls. The experimental maximum strengths were evaluated with existing design codes, it was indicated that the strength evaluation of the low rise RAC shear walls can follow the existing design codes of the conventional concrete shear walls.

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Materials

Tập 10 Số 12

1400

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