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http://hdl.handle.net/10397/105801
Title: | Full scale evaluation of GFRP confined softwood after long-term exposure to high humidity environment | Authors: | Almutairi, AD Bai, Y Zhao, XL Ferdous, W |
Issue Date: | Feb-2023 | Source: | Forests, Feb. 2023, v. 14, no.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: | Bonding Confinement Durability Fiber-reinforced polymer Humidity Softwood timber |
Publisher: | MDPI AG | Journal: | Forests | EISSN: | 1999-4907 | DOI: | 10.3390/f14020343 | Rights: | Copyright: © 2023 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). The following publication Almutairi AD, Bai Y, Zhao X-L, Ferdous W. Full Scale Evaluation of GFRP Confined Softwood after Long-Term Exposure to High Humidity Environment. Forests. 2023; 14(2):343 is available at https://doi.org/10.3390/f14020343. |
Appears in Collections: | Journal/Magazine Article |
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forests-14-00343-v2.pdf | 5.73 MB | Adobe PDF | View/Open |
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