@inproceedings{11da203b97dd4f3abb129b04e418d5d5,
title = "Visualization of the fibre dispersion in the steel fibre reinforced concrete using X-ray image",
abstract = "Uniform distribution of fibres which are orientated parallel to the direction of tensile stress is essential to improve the structural performance of steel fibre reinforced concrete (SFRC) members. However, the fibre distribution in concrete structures is hardly uniform due to the effects of many parameters during the fabrication process (vibration, placing methods, concrete moulds, etc.) which can negatively affects their structural performance. The use of self-compacting concrete (SCC) instead of normal concrete can be a good alternative where the fibres can be aligned in the direction of flow without the use of vibration. This paper presents an effort for improving the structural performance of fibre-reinforced concrete members by utilizing the high-flowability and self-placability properties of SCC to achieve better distribution and orientation of fibres. In the experiment, the self-compacting fibre reinforced concrete (SCFRC) was flown into beams and the X-ray image was taken over the whole length of each specimen to investigate the effects of flow distance from the casting point on the distribution and orientation of fibres. In addition, other specimens were also fabricated using SFRC (with normal concrete). The bending tests were performed to observe the flexural performance of SCFRC and SFRC specimens. By the comparison of their structural performance, it was found that SCFRC ones provided better performance due to the more uniform distribution of fibres which were aligned in the flow direction of SCFRC.",
keywords = "Concrete flow, Fibre dispersion, Self-compacting concrete, Steel fibre, X-ray image",
author = "Raju, {Ramiz Ahmed} and Sopokhem Lim and Takumi Kageyama and Mitsuyoshi Akiyama",
year = "2019",
month = jan,
day = "1",
language = "English",
series = "Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures",
publisher = "International Federation for Structural Concrete",
pages = "351--357",
editor = "Wit Derkowski and Piotr Krajewski and Piotr Gwozdziewicz and Marek Pantak and Lukasz Hojdys",
booktitle = "Proceedings of the fib Symposium 2019",
note = "fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures ; Conference date: 27-05-2019 Through 29-05-2019",
}