Qing, L, Yu, K, Mu, R et al. (1 more author) (2019) Uniaxial tensile behavior of aligned steel fibre reinforced cementitious composites. Materials and Structures, 52 (4). 70. pp. 70-82. ISSN 1359-5997
Abstract
By applying an external uniform magnetic field to a fresh cement mixture during casting, an aligned steel fibre reinforced cementitious composites (ASFRC) was prepared. This investigation compares the performance of ASFRC with its counterpart—ordinary steel fibre reinforced cementitious composite (SFRC) containing randomly distributed steel fibres. First, the orientation of the steel fibres in ASFRC and SFRC specimens was examined using X-ray computed tomography analysis; this confirmed that the steel fibres were effectively aligned in the ASFRC. Then, uniaxial tensile tests were performed to allow a comparison of the uniaxial tensile stress–strain curves of the ASFRC and SFRC; and to determine the advantages, if any of ASFRC over SFRC in terms of uniaxial tensile strength (fUtu), ultimate strain (εUtu) and energy dissipation (Gf-A). The uniaxial tensile test results were also used to show that, if the tensile strength of ASFRC is equal to that of SFRC (actually slightly exceeding) using the aligned steel fibre technology, the dosage of steel fibres can be reduced at least 40%. It was also found that the alignment of the steel fibres affects the strain-hardening and multiple cracking behavior of the composites during uniaxial tension testing. Finally, the multiple cracking behavior of the composites was analyzed using a digital image correlation method. These results show that ASFRC exhibits a multiple cracking pattern at a much lower fibre content compared to SFRC.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © RILEM 2019. This is a post-peer-review, pre-copyedit version of an article published in Materials and Structures. The final authenticated version is available online at: http://dx.doi.org/10.1617/s11527-019-1374-5 |
Keywords: | Steel fibre reinforced cementitious composites; Aligned steel fibre; Uniaxial tensile strength; Strain hardening; Multiple cracking |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Civil Engineering (Leeds) |
Funding Information: | Funder Grant number Royal Society IEC\NSFC\170603 |
Depositing User: | Symplectic Publications |
Date Deposited: | 13 Aug 2019 11:48 |
Last Modified: | 25 Jun 2020 00:38 |
Status: | Published |
Publisher: | Springer Verlag |
Identification Number: | 10.1617/s11527-019-1374-5 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:149154 |