Assessing the effect of coarse aggregate size on self-compacting fibre reinforced concrete mix

Kulasegaram, Sivakumar ORCID: https://orcid.org/0000-0002-9841-1339 and Mimoun, Abdulkarim 2022. Assessing the effect of coarse aggregate size on self-compacting fibre reinforced concrete mix. International Journal of Civil Infrastructure (IJCI) 5 , pp. 78-84. 10.11159/ijci.2022.011

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Abstract

Steel fibres increase inhomogeneity and alter rheological and hardened characteristics of self-compacting concrete. To investigate the rheological behaviour and hardened characteristics of self-compacting concrete (SCC) and self-compacting steel fibre reinforced concrete (SCSFRC), a wide range of normal strength self-compacting concrete mixes containing steel fibres and coarse aggregates (of size 10 mm, 20 mm) with target cube compressive strengths between 30 to 70 MPa were prepared in the laboratory. The plastic viscosity of these concrete mixes were estimated to be in the range between 20–50 Pa s , and the slump flow time t500 of each mix was recorded to ensure that the flow and passing ability for workability of the mixes satisfy the recommended British and European standards. This work mainly focuses on the properties of fibre reinforced self-compacting concrete containing 0.5% and 1% (by volume fraction) steel fibres and the effect of coarse aggregates on their rheological behaviour and flow characteristics. The effect of steel fibre content on the strength of hardened concrete is also investigated. In addition, comparison of flow behaviour between SCC and SCSFRC is also presented.

Item Type:	Article
Date Type:	Published Online
Status:	Published
Schools:	Engineering
Publisher:	Avestia Publishing
ISSN:	2563-8084
Date of First Compliant Deposit:	18 July 2022
Date of Acceptance:	20 June 2022
Last Modified:	12 May 2023 01:45
URI:	https://orca.cardiff.ac.uk/id/eprint/151353

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