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.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the fib Symposium 2019 |
| Subtitle of host publication | Concrete - Innovations in Materials, Design and Structures |
| Editors | Wit Derkowski, Piotr Krajewski, Piotr Gwozdziewicz, Marek Pantak, Lukasz Hojdys |
| Publisher | International Federation for Structural Concrete |
| Pages | 351-357 |
| Number of pages | 7 |
| ISBN (Electronic) | 9782940643004 |
| Publication status | Published - 2019 Jan 1 |
| Event | fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures - Krakow, Poland Duration: 2019 May 27 → 2019 May 29 |
Publication series
| Name | Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures |
|---|
Conference
| Conference | fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures |
|---|---|
| Country | Poland |
| City | Krakow |
| Period | 19/5/27 → 19/5/29 |
Fingerprint
Keywords
- Concrete flow
- Fibre dispersion
- Self-compacting concrete
- Steel fibre
- X-ray image
ASJC Scopus subject areas
- Building and Construction
- Architecture
- Civil and Structural Engineering
Cite this
Visualization of the fibre dispersion in the steel fibre reinforced concrete using X-ray image. / Raju, Ramiz Ahmed; Lim, Sopokhem; Kageyama, Takumi; Akiyama, Mitsuyoshi.
Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures. ed. / Wit Derkowski; Piotr Krajewski; Piotr Gwozdziewicz; Marek Pantak; Lukasz Hojdys. International Federation for Structural Concrete, 2019. p. 351-357 (Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Visualization of the fibre dispersion in the steel fibre reinforced concrete using X-ray image
AU - Raju, Ramiz Ahmed
AU - Lim, Sopokhem
AU - Kageyama, Takumi
AU - Akiyama, Mitsuyoshi
PY - 2019/1/1
Y1 - 2019/1/1
N2 - 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.
AB - 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.
KW - Concrete flow
KW - Fibre dispersion
KW - Self-compacting concrete
KW - Steel fibre
KW - X-ray image
UR - http://www.scopus.com/inward/record.url?scp=85066099921&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85066099921&partnerID=8YFLogxK
M3 - Conference contribution
T3 - Proceedings of the fib Symposium 2019: Concrete - Innovations in Materials, Design and Structures
SP - 351
EP - 357
BT - Proceedings of the fib Symposium 2019
A2 - Derkowski, Wit
A2 - Krajewski, Piotr
A2 - Gwozdziewicz, Piotr
A2 - Pantak, Marek
A2 - Hojdys, Lukasz
PB - International Federation for Structural Concrete
ER -