Distribution and orientation of steel fibres in steel fibre reinforced concrete

Conference paper


Nassif, A, Williams, J, Ige, O and Barnett, S (2016). Distribution and orientation of steel fibres in steel fibre reinforced concrete. Fouth International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2016. Institute of Research Engineers and Doctors. doi:10.15224/978-1-63248-101-6-10
AuthorsNassif, A, Williams, J, Ige, O and Barnett, S
TypeConference paper
Abstract

The use of fibres to reinforce brittle materials for
better performance has been employed since time immemorial.
Therefore, inclusion of steel fibres in concrete has always
improved the post-cracking strength and concrete ductility to a large extent while full potential of steel fibre reinforced
concrete (SFRC) is still yet to be exploited in practice. This study investigated the effects of fibre type, dosage and
maximum aggregate size on distribution and orientation and
hence, the flexural performance of steel fibre reinforced
concrete. Hooked-end steel fibres with 50 mm and 60 mm
length, aspect ratio of 45, 65 and 80, and dosages of 0 kg/m³, 25 kg/m³, 40 kg/m³, 50 kg/m³ and 60 kg/m³ were used with maximum sizes of coarse aggregate of 10mm and 20mm. X-ray Computed Tomography was employed for imaging cores taken
from the slab specimens after testing. The experimental results show a remarkable improvements in flexural strength up to 83% observed at larger dosage of steel fibre and when good interaction leading to better distribution and orientation of fibres within concrete matrix is sustained between right fibre geometry and appropriately sized aggregate.

KeywordsConcrete; Flexural properties; Steel fibres; Aggregate size; Fibre distribution and orientation
Year2016
JournalFouth International Conference on Advances in Civil, Structural and Construction Engineering - CSCE 2016
PublisherInstitute of Research Engineers and Doctors
Digital Object Identifier (DOI)doi:10.15224/978-1-63248-101-6-10
Accepted author manuscript
License
CC BY 3.0
File Access Level
Open
Publisher's version
File Access Level
Open
Publication dates
Print19 Aug 2016
Online19 Aug 2016
Publication process dates
Accepted19 Jul 2016
Deposited13 Mar 2020
ISBN9781632481016
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https://openresearch.lsbu.ac.uk/item/894zy

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