Compressive Behavior of Sustainable Steel-FRP Composite Bars with Different Slenderness Ratios

Tang, Yu; Sun, Zeyang; Wu, Gang

doi:10.3390/su11041118

Cited by 17 publications

(10 citation statements)

References 23 publications

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“…However, it may cause steel reinforcement rebars to corrode if the beam is exposed to harsh environmental conditions. Considering the use of sustainable materials for the construction sector has been proposed by researchers , and the replacement of steel rebars with FRP rebars has been taken into account as a viable solution to enhance the corrosion resistance of deep-reinforced concrete beams [4,5,[28][29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Effects of the Concrete Strength and FRP Reinforcement Type on the Non-Linear Behavior of Concrete Deep Beams

et al. 2022

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To provide sustainable reinforced concrete deep beams, the replacement of steel rebars by FRP rebars with high-chemical resistance is proposed by researchers. However, the effects of the concrete strength, top and web longitudinal reinforcements, and types of FRP flexural rebars on the non-linear performance of concrete deep beams have rarely been evaluated. This study numerically assessed the effects of the top and web longitudinal reinforcements and concrete strength on the non-linear behaviour of GFRP- and CFRP-strengthened concrete deep beams with various shear span-to-overall depth (a/h) ratios. As per the results, the highest tensile stress was obtained for the steel reinforcement, and the tensile stress in the CFRP reinforcement was more than that of the GFRP reinforcement under the failure load. Meanwhile, the results of high- and normal-strength concrete deep beams with the web reinforcement (16.4%) were lower than those without the web reinforcement (22.3%). Therefore, the web reinforcement moderately compensated for the low strength of normal concrete and the absence of the top longitudinal rebar to reinforce concrete deep beams in carrying the ultimate load. Furthermore, the participation of the GFRP reinforcement with the high-strength concrete was more than that with the normal-strength concrete in carrying a higher amount of loading.

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Section: Introductionmentioning

confidence: 99%

Effects of the Concrete Strength and FRP Reinforcement Type on the Non-Linear Behavior of Concrete Deep Beams

et al. 2022

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“…The steel-FRP interface and the SFCB-concrete contact are two of the key interfaces for SFCB inside concrete constructions. Actually, the performance of SFCB is directly impacted by the bonding of these interfaces Ma G. et al (2019) &Tang et al (2019.…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessment of the Mechanical Properties of Steel-Fiber Composite Bar (Sfcb) Reinforcement

Shukur

Alkhudery

2023

Kufa J. Eng.

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The Steel-fiber reinforced polymer (FRP) composite bar (SFCB) is a recently proposed bar, it has a steel inner and an exterior layer of FRP, and an adhesive resin to bond the two materials. The SFCB bar used in this paper was made by using a handmade technique; this technique includes a manufacturing procedure that was described in this paper. SFCBs were tested using the standard uniaxial tensile test (ASTM A370) to figure out their mechanical properties and stress-strain relationship and compare them with the normal steel bars. Moreover, the bonding test was conducted to comprehend the bonding performance of SFCB in the concrete and to compare it with the normal steel performance, the bonding test was conducted according to ACI 440.3R-12. The experimental results illustrated that the values of yielding and ultimate tensile strengths of SFCB were slightly less than that of the conventional steel with percentages of 4% for both, the modulus of elasticity values which were found theoretically in good agreement with the test results values, the behavior of SFCB stress-strain curve was slightly different than the conventional steel behavior, with a stable post-yield modulus. Also, the results showed that the SFCB/Steel (SFCB/Steel) ratio between the bond strength of SFCB and the bond strength of steel bar was approximately 0.86, which means that the SFCB had lesser bond strengths than the normal steel with a percentage of 14%, the results also showed that the SFCB had less slip than the steel bar with a percentage of 10%.

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“…Fiber reinforced polymer (FRP) composites were used in the construction of marine vessels and structures since the middle of the 20th century, whether it be as an exclusive option for construction [1] or as a combination with traditional materials, such as steel [2] or concrete [3]. The design of these structures in aspects of strength, durability, and environmental influence on the mechanical properties was based mainly on experience for the best part of the said period.…”

Section: Introductionmentioning

confidence: 99%

Effect of Time-Real Marine Environment Exposure on the Mechanical Behavior of FRP Composites

Vizentin

Glujić

Špada³

2021

Sustainability

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Fiber reinforced polymer (FRP) composites coupons were exposed to real sea environment to assess the influence on the mechanical behavior of composite materials used in the construction of marine structures. Real-life sea environment conditions were opted for instead of the more common simulated and laboratory versions of seawater in the attempt to obtain more realistic structural modeling environmental input design parameters for marine structures. Exposure was performed over prolonged time span instead of the usual accelerated tests. Epoxy and polyester resins, reinforced with glass fibers in three fiber layout configurations, were used to manufacture standardized tensile testing coupons. Mass changes due to seawater absorption, microorganism growth, changes in tensile strength (standard tensile tests), and surface morphology of the coupons were evaluated after 6- and 12-month long periods of submersion in the sea in the Rijeka bay, Croatia. All specimens showed mass increase due to water absorption and growth of attached algae and sea microorganisms. Various levels of reduction in tensile strength, depending on the fiber layout configurations, were observed. Significant changes in the matrix material structure were noticed, effectively producing “voids”. Based on these results, sustainability of FRP composites in marine environment is addressed and discussed.

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Compressive Behavior of Sustainable Steel-FRP Composite Bars with Different Slenderness Ratios

Cited by 17 publications

References 23 publications

Effects of the Concrete Strength and FRP Reinforcement Type on the Non-Linear Behavior of Concrete Deep Beams

Effects of the Concrete Strength and FRP Reinforcement Type on the Non-Linear Behavior of Concrete Deep Beams

Experimental Assessment of the Mechanical Properties of Steel-Fiber Composite Bar (Sfcb) Reinforcement

Effect of Time-Real Marine Environment Exposure on the Mechanical Behavior of FRP Composites

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