Dynamic mechanical property of hybrid fiber reinforced concrete(HFRC) |
| |
Authors: | Zhigang Ren Meng Chen Zhe’an Lu Weiguo Xu |
| |
Affiliation: | 1. School of Civil Engineering & Architecture, Wuhan University of Technology, Wuhan, 430070, China 2. College of Resources and Civil Engineering, Northeastern University, Shenyang, 110004, China 3. Hubei Key Laboratory of Road, Bridge and Structural Engineering, Wuhan University of Technology, Wuhan, 430070, China 4. Department of Orthopaedics, Tongji Hospital Affiliated to Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, China
|
| |
Abstract: | The uniaxial compressive response of steel-polypropylene hybrid fiber reinforced concrete (HFRC) and steel fiber-reinforced concrete (SFRC) was analyzed under high strain rate loading with a 74 mm diameter split Hopkinson pressure bar (SHPB). The experimental investigation focused on recorded data and resulted in distinguishing the strain rate that mobilized different ductility of steel-polypropylene hybrid fiber reinforced concrete (HFRC) and steel fiber-reinforced concrete (SFRC). 64 specimens of HFRC and SFRC with higher static compressive strength were tested at the strain rates changing from 20 to 120 s?1. The static compressive strength and dynamic stress-strain curves of the two materials were obtained at 4 different strain rates and the failure stress, and peak strain and peak toughness were also analyzed. The results show that HFRC has quite good dynamic mechanical property and clear strain-rate effect, and the failure mechanism of HFRC and SFRC was also compared based on the specimens’ failure modes in static and dynamic compressive tests. |
| |
Keywords: | HFRC SFRC compression property SHPB strain rate |
本文献已被 CNKI SpringerLink 等数据库收录! |
|