Fibre‐reinforced polymers in reinforced and prestressed concrete applications: moving forward

Lees, Janet M.

doi:10.1002/pse.60

Cited by 24 publications

(4 citation statements)

References 22 publications

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“…As a new type of structural material in civil engineering, fiber-reinforced polymer (FRP) has become an important supplement to traditional materials in civil engineering due to its excellent mechanical, physical and chemical properties [ 1 , 2 , 3 ]. At present, FRP composite materials in civil engineering mainly include four categories based on the form of application: FRP strengthened structures, FRP ribs and cables to replace steel bars and steel cables, FRP combined with traditional materials and full FRP structures [ 4 , 5 , 6 , 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Fatigue Behavior of Glass Fiber-Reinforced Polymer Bars after Elevated Temperatures Exposure

Zhao

Wang

2018

Materials

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Fiber-reinforced polymer (FRP) bars have been widely applied in civil engineering. This paper presents the results of an experimental study to investigate the tensile fatigue mechanical properties of glass fiber-reinforced polymer (GFRP) bars after elevated temperatures exposure. For this purpose, a total of 105 GFRP bars were conducted for testing. The specimens were exposed to heating regimes of 100, 150, 200, 250, 300 and 350 °C for a period of 0, 1 or 2 h. The GFRP bars were tested with different times of cyclic load after elevated temperatures exposure. The results show that the tensile strength and elastic modulus of GFRP bars decrease with the increase of elevated temperature and holding time, and the tensile strength of GFRP bars decreases obviously by 19.5% when the temperature reaches 250 °C. Within the test temperature range, the tensile strength of GFRP bars decreases at most by 28.0%. The cyclic load accelerates the degradation of GFRP bars after elevated temperature exposure. The coupling of elevated temperature and holding time enhance the degradation effect of cyclic load on GFRP bars. The tensile strength of GFRP bars after elevated temperatures exposure at 350 °C under cyclic load is reduced by 50.5% compared with that at room temperature and by 36.3% compared with that after exposing at 350 °C without cyclic load. In addition, the elastic modulus of GFRP bars after elevated temperatures exposure at 350 °C under cyclic load is reduced by 17.6% compared with that at room temperature and by 6.0% compared with that after exposing at 350 °C without cyclic load.

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Section: Introductionmentioning

confidence: 99%

Fatigue Behavior of Glass Fiber-Reinforced Polymer Bars after Elevated Temperatures Exposure

Zhao

Wang

2018

Materials

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“…(2) The range of the jack shall not be less than 1.5 times of the pre-tensioning force of CFRP plate, the process of which ought to be applied slowly and uniformly. (4) In the process of CFRP plate tensioning, the tensile force and elongation of CFRP plate should be monitored to ensure that the CFRP plate tension reaches the design value after installation [5][6].…”

Section: Precautions In Constructionmentioning

confidence: 99%

Research on the Application of Prestressed CFRP in Strengthening Concrete Beams

2023

IJFET

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CFRP plate is a kind of common bridge reinforcement material, its high tensile strength, shrinkage, environmental corrosion resistance. It is conducive to the bridge reinforcement of CFRP plate, which can not only effectively improve the bearing capacity, stiffness, crack resistance and ductility of the component, but also will not increase the original size and weight of the bridge. It has the advantages of reliable anchorage effect, large tensile stress, simple process, good technology and economy. The reinforcement can give full play to the high strength characteristics of CFRP material, effectively improve the mechanical properties of components in the use stage, prevent spalling damage, reduce strain lag phenomenon, while the construction does not interrupt the traffic, and the material utilization rate is high, light weight, beautiful appearance and so on.

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“…Stirrup can be formed by heating a straight FRP bar and bending it into the desired shape. 18 Lees' 19 experimental study of carbon, aramid, and glass fiber-reinforced polymer (GFRP) bars has shown that when ratio of bar's radius and diameter is 3, 5, and 7, tensile strength of the corner of the bent stirrup is approximately 45%, 55%, and 65% of the straight bar's tensile strength. However, it is noted that these results depend on the type of the fiber and resin, as well as on the method of forming the stirrup.…”

Section: Introductionmentioning

confidence: 99%

Study on shear resistance of fiberreinforced polymer–reinforced concrete beams

Valivonis

Budvytis

Atutis

et al. 2015

Advances in Mechanical Engineering

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This article is aimed to investigate the shear resistance of the beams reinforced with fiber-reinforced polymer stirrups. Together with theoretical analysis of the existing shear resistance provisions in design codes and literature, an experimental research was performed. During the experimental investigation, four doubly reinforced rectangular concrete beams were designed, produced, and tested to failure. A new analytical calculation method (including, but not limited to statistical validation) to investigate the shear response of fiber-reinforced polymer-reinforced concrete beams has been developed. A database with 102 beams was compiled, in order to evaluate the guideline provisions and proposed analytical calculation method. The experimental results were compared with theoretical results obtained by the proposed analytical calculation method. Correlation between analytical and experimental results is more accurate than using the existing provisions in design codes and literature for fiber-reinforced polymer-reinforced concrete beams.

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Fibre‐reinforced polymers in reinforced and prestressed concrete applications: moving forward

Cited by 24 publications

References 22 publications

Fatigue Behavior of Glass Fiber-Reinforced Polymer Bars after Elevated Temperatures Exposure

Fatigue Behavior of Glass Fiber-Reinforced Polymer Bars after Elevated Temperatures Exposure

Research on the Application of Prestressed CFRP in Strengthening Concrete Beams

Study on shear resistance of fiberreinforced polymer–reinforced concrete beams

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