Effect of temperature on strength and stiffness properties of near-surface mounted FRP reinforcement

Yu, Bo; Kodur, Venkatesh

doi:10.1016/j.compositesb.2013.10.055

Cited by 121 publications

(67 citation statements)

References 7 publications

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“…However, the application of external bonded FRP to concrete structure is often restricted to conditions where temperatures are below the resin glass transition temperature (T g ), which is around 82 o C for commonly used organic epoxy resin [1]. This is mainly due to deterioration of thermo-mechanical properties of epoxy resin at high temperatures [2][3][4][5]. In addition, the combustible organic epoxy resin can generate flame spread and toxic smoke under fire.…”

Section: Introductionmentioning

confidence: 98%

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Zhang

Kodur

et al. 2015

Cement and Concrete Composites

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Section: Introductionmentioning

confidence: 98%

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Zhang

Kodur

et al. 2015

Cement and Concrete Composites

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“…However, under fire conditions, the strength and stiffness properties of FRP (as well as steel rebars in the beam) degrade with rise in temperature Wang et al, 2007;Yu and Kodur 2014b). Figure 12.2 shows the variation of strength properties with temperature in concrete, steel, wood, and FRP.…”

Section: Behavior Of Fire-exposed Nsm Frp-strengthened Beamsmentioning

confidence: 96%

“…In addition, the degradation of moment capacity is influenced by a number of factors including type of fire exposure, type of strengthening (EB or NSM), loading, support conditions, insulation thickness and properties, and high-temperature thermal and mechanical properties of concrete, steel, and FRP Yu and Kodur 2014b).…”

Section: Behavior Of Fire-exposed Nsm Frp-strengthened Beamsmentioning

confidence: 99%

Strategies for Enhancing Fire Performance of NSM FRP-Strengthened Reinforced Concrete Beams

Kodur

2016

Multi-Hazard Approaches to Civil Infrastructure Engineering

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Fiber-reinforced polymers (FRPs) are widely used in strengthening and retrofitting of reinforced concrete structural members to enhance flexural and shear capacity of such members. Two types of strengthening techniques, namely, externally bonded (EB) FRP and near-surface mounted (NSM) FRP, are used in field applications. FRP, as a material, exhibits poor fire resistance properties, and this can be a limiting factor in the application of FRP strengthening in buildings. There is limited guidance in codes and standards for fire design of NSM FRP-strengthened concrete members. This paper discusses strategies for achieving required fire resistance in NSM FRP-strengthened reinforced concrete beams. Results from numerical and experimental studies are utilized to quantify the influence of various parameters on the fire resistance of NSM FRP-strengthened concrete beams. Guidelines for achieving optimum fire resistance in NSM FRPstrengthened concrete beams are presented. IntroductionIn recent years, fiber-reinforced polymers (FRPs) are widely used in strengthening and rehabilitation of reinforced concrete (RC) structural members in built infrastructure. This is mainly due to numerous advantages that FRP possesses over other traditional materials, which include high strength to weight ratio, good corrosion resistance, and ease of application. In the case of RC columns, FRP wrapping on the exterior of concrete columns can significantly increase the strength and ductility of these columns. FRP strengthening in beams (and slabs), for enhancing flexural and shear capacity, is typically carried out by applying FRP laminates to the surface of a concrete beam (and slab), and this is designated as externally bonded (EB) reinforcing technique. Filling the FRP with adhesives or grout ensures that FRP

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“…Since then, a number of additional relevant studies performed on tensile properties of FRPs specifically used for civil engineering strengthening applications have been presented, including the work of Cao et al [12], Wang et al [13], Chowdhury et al [14], and Yu and Kodur [15]. Two basic types of test procedures (similar to those typically used at ambient temperature 1 ) were used in these prior studies: specimens were (i) heated up to a predefined temperature and then loaded up to failure (steady state (S) conditions); or (ii) loaded to a fraction of their ambient temperature strength and then heated up to failure (transient state (T) conditions).…”

Section: Frpmentioning

confidence: 98%

“…Yu and Kodur [15] studied the effect of temperature on the tensile strength and elastic modulus of two types of CFRP pultruded products (strips and rods) for near surface mounted (NSM) strengthening under steady-state (S) conditions. As shown in Fig.…”

Section: Frpmentioning

confidence: 99%

Fire behaviour of FRP-strengthened reinforced concrete structural elements: A state-of-the-art review

Firmo

Correia

Bisby

2015

Composites Part B: Engineering

140

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Effect of temperature on strength and stiffness properties of near-surface mounted FRP reinforcement

Cited by 121 publications

References 7 publications

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Characterizing the bond strength of geopolymers at ambient and elevated temperatures

Strategies for Enhancing Fire Performance of NSM FRP-Strengthened Reinforced Concrete Beams

Fire behaviour of FRP-strengthened reinforced concrete structural elements: A state-of-the-art review

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