Full Scale Evaluation of GFRP Confined Softwood after Long-Term Exposure to High Humidity Environment
Article
Article Title | Full Scale Evaluation of GFRP Confined Softwood after Long-Term Exposure to High Humidity Environment |
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ERA Journal ID | 210472 |
Article Category | Article |
Authors | Almutairi, Ahmed D., Bai, Yu, Zhao, Xiao-Ling and Ferdous, Wahid |
Journal Title | Forests |
Journal Citation | 14 (2) |
Number of Pages | 19 |
Year | Feb 2023 |
Publisher | MDPI AG |
Place of Publication | Switzerland |
ISSN | 1999-4907 |
Digital Object Identifier (DOI) | https://doi.org/10.3390/f14020343 |
Web Address (URL) | https://www.mdpi.com/1999-4907/14/2/343 |
Abstract | Plantation softwood timber poles are associated with low natural durability, and it is also not clear what the effects of the high humidity environment on the long-term performance of composite action integrity of such a system. This paper presents a durability study for the proposed composite poles using (GFRP) glass fiber-reinforced polymer as a confinement system on wooden poles sourced from plantation softwood timber. Radiata pine poles of 6 m length were wrapped with multiple layers of 0°/90° woven roving biaxial E-glass fiber sheets through a wet layup process as confinement. The prepared GFRP softwood poles were then subjected to high humidity environmental conditions of up to 95 ± 2% relative humidity and 22 ± 2 °C temperature for a period of 30 months. Various lengths of confinement were considered in this study ranging from 0% to 70% of the span length. The poles had a span length of 5.4 m and were tested using a three-point bending test. Results showed that the proposed confinement system of GFRP-softwood provided a satisfactory long-term performance and the high humidity environment did not greatly affect the improvement in the mechanical performance that the GFRP system provided. |
Keywords | fiber-reinforced polymer; softwood timber; durability; bonding; humidity; confinement |
ANZSRC Field of Research 2020 | 400510. Structural engineering |
Byline Affiliations | School of Engineering |
Research Scholarships |
https://research.usq.edu.au/item/x8zy4/full-scale-evaluation-of-gfrp-confined-softwood-after-long-term-exposure-to-high-humidity-environment
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