Experimental study on seismic performance of strengthening masonry wall using hybrid fiber-reinforced reactive powder concrete

Author:

Wang Xin12,Xie Qun3,Wu Zhenli4ORCID,Bu Fanyang5,Wang Fei6

Affiliation:

1. School of Civil Engineering, Shandong Jianzhu University, Jinan, China

2. Supported by Key Laboratory of Building Structural Retrofitting and Underground Space Engineering (Shandong Jianzhu University) Ministry of Education, Jinan, China

3. School of Civil Engineering and Architecture, University of Jinan, Jinan, China

4. College of Civil Engineering, Tongji University, Shanghai, China

5. Jiangsu Huasheng Architectural Design Co., Ltd, Xuzhou, China

6. China Construction Science & Technology Co., Ltd., Beijing, China

Abstract

An experimental study was conducted to investigate the seismic performance of masonry walls strengthened using hybrid fiber-reinforced reactive powder concrete (HyFRRPC) as a coating. The proposed reinforcement technique was employed to improve the overall strength and structural integrity of the confined masonry wall. In order to guarantee the composite action between the masonry substrate and the coating material, material tests were conducted to achieve an optimal mixture for the HyFRRPC. Then, six full-scaled confined masonry specimens strengthened by HyFRRPCs with varied strengthening configurations were tested under in-plane quasi-static horizontal loading. The test and analysis results indicated that the proposed HyFRRPC-strengthening technique can effectively improve the lateral carrying capacity, displacement ductility, and energy dissipation capacity of masonry walls, and provide an optimal reinforcement. Finally, a simplified analytical model was also proposed for practical application.

Publisher

SAGE Publications

Subject

Geophysics,Geotechnical Engineering and Engineering Geology

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