Journal
COMPOSITES PART B-ENGINEERING
Volume 212, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compositesb.2021.108689
Keywords
Large rupture strain (LRS); Fiber-reinforced polymer (FRP) composites; Mechanical properties; Reinforced concrete (RC) members; Hybrid members; Strengthening
Funding
- National Natural Science Foundation of China [51908137]
- Key Special Project for Introduced Talents Team of Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou) [GML2019ZD0503]
- Guangzhou Science and Technology Department [201904010163]
- Natural Science Foundation of Guangdong Province [18ZK0183, 2019A1515011637]
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FRP composites are commonly used in civil engineering for strengthening existing deteriorated structures or constructing new ones. The emerging category of LRS FRP composites, with a large rupture strain, is becoming popular due to their ability to enhance structural performance and ductility. This paper reviews the basic characteristics and structural usage of LRS FRP composites, identifying further research opportunities in structural engineering applications.
Fiber-reinforced polymer (FRP) composites have been widely used in civil engineering for either strengthening existing deteriorated reinforced concrete (RC) structures or constructing new structures. Recently, a new category of FRP composites with a large rupture strain (i.e., referred to as LRS FRP in this article) has become increasingly popular. In contrast with conventional FRP composites, LRS FRP composites possess a larger elongation and a lower modulus of elasticity. Since the ultimate state of structures with FRP strengthening generally depends on fracture of the FRP, it is expected that an increase in FRP rupture strain leads to a better performance of structures and LRS FRP composites are particularly suitable for enhancing ductility of structures. This paper presents a state-of-the-art review on the basic characteristics of LRS FRP composites and structural usage of LRS FRP composites (including concrete confined with LRS FRP composites), with further research opportunities associated with LRS FRP composites in structural engineering applications being identified.
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