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A Review on Strengthening of Timber Beams Using Fiber Reinforced Polymers

Bingyu Jian1,2, Ke Cheng3, Haitao Li1,2,*, Mahmud Ashraf2,4, Xiaoyan Zheng1,2, Assima Dauletbek1,2, Mahdi Hosseini1,2, Rodolfo Lorenzo5, Ileana Corbi6, Ottavia Corbi6, Kun Zhou7

1 College of Civil Engineering, Nanjing Forestry University, Nanjing, 210037, China
2 Joint International Research Laboratory for Bio-Composite Building Materials and Structures, Nanjing Forestry University, Nanjing, 210037, China
3 Wu Yuzhang Honors College, Sichuan University, Chengdu, 610200, China
4 Deakin University, Geelong, VIC 3216, Australia
5 University College London, London, WC1E 6BT, UK
6 University of Naples Federico II, Naples, 80133, Italy
7 Guangxi Lvjing Bamboo Industry Co., Ltd., Guilin, 541402, China

* Corresponding Author: Haitao Li. Email: email

(This article belongs to this Special Issue: Bio-Composite Materials and Structures-2021)

Journal of Renewable Materials 2022, 10(8), 2073-2098.


Fiber reinforced polymer (FRP) has been used in the construction industry because of its advantages such as high strength, light weight, corrosion resistance, low density and high elasticity. This paper presents a review of bonding techniques adopted to strengthen timber beams using FRP to achieve larger spans. Different methods of bonding between FRP and timber beams have been summarized with a focus on the influencing factors and their effects as well as relevant bond-slip models proposed for fundamental understanding. Experimental investigations to evaluate the flexural performance of timber beams strengthened by FRP bars, sheets and wraps have also been critically reviewed to identify key influencing parameters. Limited research available on the shear performance of FRP reinforced timber beams have been analyzed to determine the influencing factors of the shear performance in timber-FRP beams. The paper finally presents an overall summary of the current-state-of-the-art and proposes some future research directions in the field.

Graphical Abstract

A Review on Strengthening of Timber Beams Using Fiber Reinforced Polymers


Cite This Article

Jian, B., Cheng, K., Li, H., Ashraf, M., Zheng, X. et al. (2022). A Review on Strengthening of Timber Beams Using Fiber Reinforced Polymers. Journal of Renewable Materials, 10(8), 2073–2098.

cc This work is licensed under a Creative Commons Attribution 4.0 International License , which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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