Assessment of synergetic effect on microscopic and mechanical properties of steel‐polypropylene hybrid fiber reinforced concrete

Singh, Niraj Kumar; Rai, Baboo

doi:10.1002/suco.201900166

Cited by 19 publications

(7 citation statements)

References 37 publications

(40 reference statements)

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“…These deformations prevent slippage and allow maximum utilization of the tensile force. The same improvement in (ffRC) due to fiber reinforcement has been reported previously [58,64]. Similar to the shear strength test, the 3-point bending test observed the significant effect of recycled fibers on increased flexural tensile strength.…”

Section: Flexural Strength Test Resultssupporting

confidence: 85%

Experimental Characterization of a Functionally Graded Composite Using Recycled Steel Fiber

et al. 2022

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Many industries have recently focused on cost-effective materials with good mechanical properties. Steel fiber reinforced cementitious composites have proven their mechanical performance in industrial and structural components. The concept of recycled fiber-reinforced FGM is used as an alternative construction material, which can be one of the proposed cost-effective solutions. To achieve these objectives, an experimental program has been developed. A cementitious composite based on local materials was strengthened in two designs; one strengthened over the entire cross-section and the other strengthened only in the tensile zone. We also substituted a functional gradient material reinforced with recycled fibers considering the following volume fractions: 0, 0.5, 1, and 1.5%. This paper investigates the feasibility of using recycled fibers from industrial waste from steel wool manufacturing as reinforcement. We also characterized their mechanical properties using ultrasonic pulse velocity, compressive strength, flexural tensile strength, and shear strength. The results show that the corrugated recycled fibers are the ideal choice to increase the mechanical performance of the reinforced composite, including the improvement of flexural and shear behaviors. Therefore, the investigated FGC could be a valuable tool to optimize the design process in various structural applications and make the production of mechanically and environmentally economical composites possible. Doi: 10.28991/CEJ-2022-08-05-03 Full Text: PDF

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Section: Flexural Strength Test Resultssupporting

confidence: 85%

Experimental Characterization of a Functionally Graded Composite Using Recycled Steel Fiber

et al. 2022

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“…Polypropylene (PP) is the second most used polymer; it exhibits excellent chemical resistance, facile processability through different techniques (such as injection and extrusion), and low-cost production, which in turn makes it a versatile option for several industries, such as construction, [1][2][3] automobiles, 4 food packaging 5 and others. [6][7][8] There are some drawbacks that limit the wider use of PP, such as high flammability, low tensile strength and low impact resistance, and it is a poor barrier for O 2 gas.…”

Section: Introductionmentioning

confidence: 99%

Hybrid solid sensitive arrays/polypropylene composites: A study on sensing alkaline vapors

Cichero

Silvia

Santos

2022

J of Applied Polymer Sci

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Solid alkaline sensors containing polypropylene (PP) and four different bromocresol purple‐based multilayered hybrid sensitive materials (using silica and polymethacrylic acid [PPMA]) were synthesized. The material was used to sense two alkaline vapors: ammonia and volatile basic nitrogen (VBN) from fish deterioration. The sensor performances were analyzed by color evaluation, the mechanical properties were assessed by tensile tests, and the dispersion of the sensitive materials into the PP matrix was analyzed by X‐ray computed microtomography. Three of the four composites exhibited sensitivity toward ammonia vapors, with values of ∆E*ab > 5; however, the sensitive composites showed lower sensitivity toward VBN, with values of ∆E*ab < 3.5. The samples showed an elongation at break below 5%, which is characteristic of brittle materials. The X‐ray computed microtomography analysis revealed that the PMAA‐based hybrid sensor exhibited better dispersion in the PP matrix than the silica‐based sensor.

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“…However, owing to the brittleness and lack of flexural/tensile strength of cementitious materials, many studies have focused on improving its mechanical strength. The typical method for improving the flexural/tensile strength of cementitious materials is to employ fibers such as polypropylene fiber, carbon fiber, steel fiber, and glass fiber as reinforcing agents [ 2 , 3 , 4 , 5 , 6 ]. Xue et al [ 7 ] and Cao et al [ 8 ] reported that the fiber exhibited various reinforcement effects on cementitious materials due to their different types and lengths.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Highly-Dispersed Graphene Oxide Nanoribbons–Functionalized Carbon Nanotubes–Graphene Oxide (GNFG) Complex and Its Application in Enhancing the Mechanical Properties of Cementitious Composites

Liu

Her

et al. 2021

Nanomaterials

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In this study, a graphene oxide nanoribbons–functionalized carbon nanotubes–graphene oxide (GNFG) complex was hydrothermally synthesized as a nanomaterial for reinforcing cementitious composites, using a modified Hummers’ method. Three types of components existed in the GNFG: Type I, the functionalized carbon nanotubes–graphene oxide nanoribbons (FCNTs–GNR); and types II and III are graphene oxide (GO) and functionalized carbon nanotubes (FCNTs), respectively, which exist independently. The dispersivity of GNFG and its effects on the mechanical properties, hydration process, and microstructures of cement pastes were evaluated, and the results were compared with those using cement pastes incorporating other typical carbon nanomaterials. The results demonstrated that dispersion of GNFG in aqueous solutions was superior to that of the CNTs, FCNTs, and GO/FCNTs mixture. Furthermore, the highly-dispersed GNFG (0.05 wt.%) improved the mechanical properties of the cement paste after 28 days of hydration and promoted the hydration of cement compared to CNTs, GO, and GO/FCNTs mixture (0.05 wt.%). The results in this study validated the feasibility of using GNFG with enhanced dispersion as a new nano-reinforcing agent for various cementitious systems.

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Assessment of synergetic effect on microscopic and mechanical properties of steel‐polypropylene hybrid fiber reinforced concrete

Cited by 19 publications

References 37 publications

Experimental Characterization of a Functionally Graded Composite Using Recycled Steel Fiber

Experimental Characterization of a Functionally Graded Composite Using Recycled Steel Fiber

Hybrid solid sensitive arrays/polypropylene composites: A study on sensing alkaline vapors

Synthesis of Highly-Dispersed Graphene Oxide Nanoribbons–Functionalized Carbon Nanotubes–Graphene Oxide (GNFG) Complex and Its Application in Enhancing the Mechanical Properties of Cementitious Composites

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