56 / 2022-03-31 11:23:55
A study on HyFRCC consisting of PE and carbon fiber: Investigation of electrical and fracture properties based on orthogonal design
Carbon fiber,ECC,HyFRCC,PE,Piezoelectric effect
摘要录用
Haowei Shen / Shenzhen University
Jihua Zhu / ; Shenzhen University;Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering; College of Civil and Transportation Engineering
Wei Liangliang / Shenzhen University
A hybrid fiber reinforced cementitious composites (HyFRCC) consisting of polyethylene (PE) and carbon fiber has a potential on new composite materials integrating high mechanical properties with smart functions based on electrical properties. However, an evaluation of electrical and fracture properties of HyFRCC has not yet reported. An orthogonal experimental design method was used to investigate the significance sequence of four influencing factors on electrical and fracture properties of HyFRCC in this paper. The influencing factors included the length (two levels) and volume fraction (five levels) of PE fiber, the volume fraction of carbon fiber (five levels) and water-to-cement ratio (four levels). A total of 25 groups were tested based on the mixed orthogonal design. Results showed that the water-to-cement ratio plays a major role in controlling the electric properties of HyFRCC in the case of adding PE and carbon fiber. Further orthogonal analysis showed that the optimal mix proportion regarding electrical properties is adding 0.75 vol% carbon fiber and 0.5 vol% PE fiber in the water-to-cement ratio of 0.4. Carbon fiber has a significant effect on the initial fracture toughness of HyFRCC, while PE fiber determines the unstable fracture toughness. Considering both electrical and fracture properties, 1.0 vol% - 1.5 vol% PE fiber and 0.75 vol% carbon fiber can be adopted in the hybrid fiber system.
重要日期
  • 会议日期

    03月11日

    2023

    03月13日

    2023

  • 02月17日 2023

    初稿截稿日期

  • 02月17日 2023

    提前注册日期

  • 03月13日 2023

    注册截止日期

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