Bending behaviour of precast concrete slab with externally flanged hollow FRP tubes

Al-Fakher, Usama and Manalo, Allan ORCID: https://orcid.org/0000-0003-0493-433X and Ferdous, Wahid ORCID: https://orcid.org/0000-0002-4473-4722 and Aravinthan, Thiru ORCID: https://orcid.org/0000-0003-0691-8296 and Zhuge, Yan and Bai, Yu and Edoo, Azam (2021) Bending behaviour of precast concrete slab with externally flanged hollow FRP tubes. Engineering Structures, 241:112433. pp. 1-10. ISSN 0141-0296


Abstract

Hollow-core precast concrete slabs are now being used in modular building construction to minimise the volume of concrete and to reduce their weight. However, the existence of voids in hollow-core concrete slabs makes the slab prone to premature failure. Recently, a composite reinforcing systems (CRS) has been developed to support the void in precast slabs. In this paper, the bending behaviour of a composite slab made from precast concrete with steel and CRS reinforcement was investigated. Four-point bending test was conducted for six precast slabs (solid, hollow without CRS, hollow with 2, 3 and 4 CRS, and hollow with 3 epoxy coated CRS) to comprehend the structural performance of this new precast concrete construction system. A non-linear finite element modelling was also conducted to gain an insight understanding the behaviour of the internal components of slab. The results showed that the CRS can stabilise the hollow core and act as additional reinforcement which enhances the load bearing capacity by 112% and the initial stiffness of the slabs by 24%.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Faculty/School / Institute/Centre: Historic - Faculty of Health, Engineering and Sciences - School of Civil Engineering and Surveying (1 Jul 2013 - 31 Dec 2021)
Faculty/School / Institute/Centre: Current - Institute for Advanced Engineering and Space Sciences - Centre for Future Materials (1 Jan 2017 -)
Date Deposited: 25 Jan 2022 03:00
Last Modified: 07 Feb 2022 01:23
Uncontrolled Keywords: Bending behaviour; Externally flanged FRP tubes; Finite element modelling; Hollow-core precast concrete slabs
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
Socio-Economic Objectives (2008): E Expanding Knowledge > 97 Expanding Knowledge > 970109 Expanding Knowledge in Engineering
Socio-Economic Objectives (2020): 28 EXPANDING KNOWLEDGE > 2801 Expanding knowledge > 280110 Expanding knowledge in engineering
Identification Number or DOI: https://doi.org/10.1016/j.engstruct.2021.112433
URI: http://eprints.usq.edu.au/id/eprint/45678

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