A study on the efficiency of steel vs. synthetic vs. hybrid fibers on fracture behavior of concrete in flexure using acoustic emission

Bhosale, Aniket; Rasheed, Mohammad Abdur; Prakash, Shamsher; Raju, Gangadharan

doi:10.1016/j.conbuildmat.2018.12.011

Cited by 65 publications

(27 citation statements)

References 25 publications

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“…(Chun & Yoo, 2018) ateel (micro, macro, hooked, twisted) The combination of macro straight and microfibers increased the pullout energy whereas hooked and twisted hybrid form enhanced the post cracking tensile strength of concrete. (Bhosale, Rasheed, Prakash, & Raju, 2019) steel, polyolefin…”

Section: Author Refmentioning

confidence: 99%

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Development of hybrid steel-basalt fiber reinforced concrete – in aspects of flexure, fracture and microstructure

Jenifer

Dharmar

2021

rdlc

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The conventional concrete is considered to be critical in various constructional applications due to its setbacks such as service load failures, brittle property, low ductility and low tensile capacity. Apart from the natural bridging mechanism (aggregate bridging), an additional bridging mechanism is necessary to overcome the existing setbacks in plain cement concrete. Thus concrete with one or more types of fibers in suitable combinations can augment the mechanical performance of concrete causing a positive synergy effect. Along with the two control mixes with and without copper slag as partial replacement of fine aggregate, two different groups of hybrid combination of fibers such as steel and basalt were cast with 3 different groups of coarse aggregate proportions of sizes 20 mm and 12.5 mm. The hybridization of fibers is assessed in this study under compression, tension, flexure and fracture. Stress-strain data were recorded under compression to validate the strain capacity of the mixtures. The mechanical properties were analyzed for the positive hybrid effect and the influencing factors were copper slag, hybrid fiber combination and coarse aggregate proportions. The optimum volume fraction of fibers and mix proportions were highlighted based on various behaviors of concrete. Steel as macro fibers and basalt as microfibers were examined under microstructural studies (SEM and EDX). The results from the flexural toughness showcased the potential of hybrid fibers with greater energy absorption capacity ensuring the ductile property of the proposed hybrid fiber reinforced concrete.

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Section: Author Refmentioning

confidence: 99%

“…& Modeer, M. 1976). Fracture energy is given by absorbed energy of the surface fractured per unit area (Bhosale et al, 2019). Figure 26 shows the load-deflection response of HFRC notched prisms for the optimum mix S15B6B which is considered to be predominant under various behavior.…”

Section: Fracture Propertiesmentioning

confidence: 99%

Development of hybrid steel-basalt fiber reinforced concrete – in aspects of flexure, fracture and microstructure

Jenifer

Dharmar

2021

rdlc

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“…x) The fibers can exhibit multiple microcracking with a strain-hardening response under tensile loading [107]. Also, fibers can increase the energy-absorbing ability during the fracture (characterized by the area under the stress-strain curve) [115] that improve post-peak ductility [116].…”

Section: Fiber-reinforced-bacterial-concretementioning

confidence: 99%

Self-repairing polyethylene fiber-reinforced-concrete with bacillus subtilis bacteria a review

Ghoneim

Hassan

Aboul-Nour

2020

IJET

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Fibers and bacterial additives in concrete have achieved significant success as a construction material. This paper presents the field of concrete self-repairing by introducing both Bacillus subtilis bacteria and polyethylene fiber as a dual-components. The main research goal is to reveal the principles of concrete self-repairing. At first, the research investigates the fiber-reinforced-concrete behavior, the concrete self-repairing process with the Bacillus subtilis bacteria for forming bacterial-concrete. And then, the study highlights the damage-repairing numerical simulation of fiber-reinforced-bacterial-concrete. The research shows the bacterial-concrete benefits to durability and mechanical properties besides to the polyethylene fiber assistance to enhance post-cracking tensile resistance and the pre-peak elastic modulus of concrete. The novelty of the fiber-reinforced-bacterial-concrete is the matrix combined improvement of both basic material properties and the post-cracking deflection capacity.

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“…In the field of structural materials monitoring, elastic waves recorded after fracture propagation events are used among others for damage localization [1][2][3], evaluation of structural integrity based on specific indices [4][5][6], corrosion monitoring [7,8], as well as characterization of the fracture mode [9][10][11][12]. It has been well demonstrated that tensile and shear or mixed mode cracks can be differentiated by the wave frequency content and the duration (or other waveform parameters) [13][14][15], see also Figure 1a,b. In the field of composites for construction, which are the continuously advancing, more sustainable, lightweight alternative of concrete, and specifically for thin plate TRCs (textile-reinforced cements), acoustic monitoring is imperative, since the TRC is not transparent making visual inspection of the plate itself and the underlying substrate impossible.…”

Section: Introductionmentioning

confidence: 99%

Dimension Effects on the Acoustic Behavior of TRC Plates

2020

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Acoustic emission (AE) is a monitoring technique that has proven its suitability in and outside of the laboratory in characterizing the structural condition of materials. In composites for construction and repair, several breakthroughs have been recently noted involving mainly fracture mode evaluation based on the AE waveform characteristics. However, the acquired signals, apart from the cracking source strongly depend on the size and shape of the plate specimens. While the effect of wave propagation distance has been studied, the effect of the lateral dimension of the plate has not been given proper attention, being a broken link in translating the results from small coupons to real size plates. This paper examines wave propagation from artificial sources as well as actual AE signals in textile-reinforced cement (TRC) plates indicating the strong differences in the results that are attributed just to the shape and size of the specimens and showing that interpretation toward the actual sources is firmly connected to geometric factors.

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A study on the efficiency of steel vs. synthetic vs. hybrid fibers on fracture behavior of concrete in flexure using acoustic emission

Cited by 65 publications

References 25 publications

Development of hybrid steel-basalt fiber reinforced concrete – in aspects of flexure, fracture and microstructure

Development of hybrid steel-basalt fiber reinforced concrete – in aspects of flexure, fracture and microstructure

Self-repairing polyethylene fiber-reinforced-concrete with bacillus subtilis bacteria a review

Dimension Effects on the Acoustic Behavior of TRC Plates

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