XFEM Modelling and Experimental Observations of Foam Concrete Beam Externally-Bonded with KFRP Sheet

Authors

  • Malik Ridwan Maulana Department of Civil Engineering, Faculty of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor Darul Tak’zim, Malaysia https://orcid.org/0000-0002-6207-0632
  • Sugiman Sugiman Faculty of Engineering, Department of Mechanical Engineering, University of Mataram, Mataram, Indonesia https://orcid.org/0000-0002-4343-0591
  • Hilton Ahmad Department of Civil Engineering, Faculty of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor Darul Tak’zim, Malaysia https://orcid.org/0000-0002-3417-8320
  • Zainorizuan Mohd Jaini Department of Civil Engineering, Faculty of Civil Engineering and Built Environment, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor Darul Tak’zim, Malaysia https://orcid.org/0000-0002-9236-6434
  • Hazrina Mansor School of Civil Engineering, Engineering Complex, Tunku Abdul Halim Muadzam Shah, Universiti Teknologi MARA, 40450 Shah Alam, Selangor Daru Ehsan, Malaysia https://orcid.org/0000-0002-4043-4298

DOI:

https://doi.org/10.1590/1679-78257205

Abstract

This paper investigates the effect of KFRP composite sheets as a strengthening material in improving the load-carrying resistance of lightweight foam concrete beams using a FEA modelling framework. The study employed three parametric strengthening schemes (i.e., KFRP length, woven architecture types and KFRP thickness). Twenty-seven beam specimens were tested, and respective failure modes and ultimate load at failure were discussed. All the strengthened beam specimens failed mostly in shear mode and, to a lesser extent, in FRP fracture. Despite the absence of de-bonding failure, improvement of strengthening using KFRP sheet technique was exhibited. Later, Extended Finite Element Method (XFEM) Modelling was incorporated following failure mode exhibited. Strength predictions incorporating the traction-separation relationship using XFEM techniques. Validation work with experimental datasets showed good agreements with average discrepancies of less than 10%. The numerical approach can be used as a strength prediction tool in concrete beams with externally bonded FRPs.

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Published

2022-08-30

Issue

Vol. 19 No. 6 (2022)

Section

Articles

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