高温下碳纤维增强混凝土静、动态压缩性能试验研究

IF 4.7 2区工程技术 Q1 MECHANICS

Engineering Fracture Mechanics Pub Date : 2025-05-26 DOI:10.1016/j.engfracmech.2025.111275

Zichen Wang , Liang Li , Jun Wu , Xiuli Du , Hongwei Wang , Gang Du

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引用次数: 0

摘要

本研究研究了碳纤维增强混凝土（CFRC）在200°C至800°C的静态和动态压缩性能，增强了对其在高温和冲击载荷耦合条件下的行为的理解。采用分离式霍普金森压杆（SHPB）系统分析了应变速率、温度、纤维体积分数和基体强度对CFRC力学性能的影响。结果表明，应变速率对动态性能有明显的强化作用。虽然碳纤维对抗压强度的影响有限，但在高温和动载荷下，碳纤维显著降低了试样的损伤。

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Experimental investigation of static and dynamic compressive behavior of carbon fiber reinforced concrete at elevated temperatures

This study investigates the static and dynamic compressive performance of carbon fiber reinforced concrete (CFRC) from 200 °C to 800 °C, enhancing the understanding of its behavior under coupled conditions of elevated temperatures and impact loading. The effects of strain rate, temperature, fiber volume fraction, and matrix strength on the mechanical properties of CFRC were systematically analyzed using a split Hopkinson pressure bar (SHPB). Results indicate that strain rate has a pronounced strengthening effect on dynamic properties. While carbon fibers have a limited impact on compressive strength, they significantly reduce specimen damage under high temperatures and dynamic loading.

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来源期刊

Engineering Fracture Mechanics 物理-力学

CiteScore

8.70

自引率

13.00%

发文量

606

审稿时长

74 days

期刊介绍： EFM covers a broad range of topics in fracture mechanics to be of interest and use to both researchers and practitioners. Contributions are welcome which address the fracture behavior of conventional engineering material systems as well as newly emerging material systems. Contributions on developments in the areas of mechanics and materials science strongly related to fracture mechanics are also welcome. Papers on fatigue are welcome if they treat the fatigue process using the methods of fracture mechanics.