Experimental and numerical analysis on the effectiveness of GFRP wrapping system on timber pile rehabilitation

Lokuge, Weena ORCID: https://orcid.org/0000-0003-1370-1976 and Otoom, Omar and Borzou, Rahmin and Navaratnam, Satheeskumar and Herath, Nilupa and Thambiratnam, David (2021) Experimental and numerical analysis on the effectiveness of GFRP wrapping system on timber pile rehabilitation. Case Studies in Construction Materials, 15:e00552.

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Rehabilitation using Glass Fibre Reinforced Polymer (GFRP) wrapping system is an innovative technique for rehabilitation of deteriorated timber structures exposed to severe environmental conditions. This paper investigates the effectiveness of rehabilitation using GFRP wrapping system for deteriorated timber piles due to splitting. An experimental investigation was conducted on undamaged and damaged short timber columns with three levels of splitting. Crane rail epoxy and underwater cementitious grout were used to fill the annulus between columns and GFRP jackets in the rehabilitated samples. All the samples were tested under axial compression loading. Axial peak and yield loads, ductility and energy absorption were discussed to assess the overall behaviour of timber columns. In addition, a finite element analysis was established to investigate the overall load-deformation performance of the tested samples and to validate the experimental results. Furthermore, an analytical prediction was performed based on Australian Standards along with an existing GFRP wrapped stress- strain model to determine the peak load capacity of the unwrapped and GFRP wrapped samples. The experimental results indicated that the GFRP wrapping system can restore the axial capacity and energy absorption of the damaged samples with high effectiveness was observed for samples infilled by the crane rail epoxy. Also, the results of numerical and analytical analysis showed a reasonable correlation with the experimental results.

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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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: 01 Sep 2021 01:49
Last Modified: 10 Aug 2022 01:29
Uncontrolled Keywords: timber column; GFRP wrapping system; splitting; infill material; axial load capacity; ductility; energy absorption
Fields of Research (2008): 09 Engineering > 0905 Civil Engineering > 090505 Infrastructure Engineering and Asset Management
09 Engineering > 0905 Civil Engineering > 090502 Construction Engineering
09 Engineering > 0905 Civil Engineering > 090506 Structural Engineering
09 Engineering > 0912 Materials Engineering > 091202 Composite and Hybrid Materials
09 Engineering > 0912 Materials Engineering > 091209 Polymers and Plastics
Fields of Research (2020): 40 ENGINEERING > 4005 Civil engineering > 400508 Infrastructure engineering and asset management
40 ENGINEERING > 4016 Materials engineering > 401609 Polymers and plastics
40 ENGINEERING > 4005 Civil engineering > 400510 Structural engineering
40 ENGINEERING > 4016 Materials engineering > 401602 Composite and hybrid materials
40 ENGINEERING > 4005 Civil engineering > 400505 Construction materials
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
12 CONSTRUCTION > 1203 Construction materials performance and processes > 120301 Cement and concrete materials
Identification Number or DOI: https://doi.org/10.1016/j.cscm.2021.e00552
URI: http://eprints.usq.edu.au/id/eprint/43468

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