Influence of concrete matrix and type of fiber on the shear behavior of self-compacting fiber reinforced concrete beams

Cuenca, Estefanía; Echegaray-Oviedo, J.; Ros, Pedro Serna

doi:10.1016/j.compositesb.2015.01.037

Cited by 72 publications

(37 citation statements)

References 17 publications

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“…It is very clear that geometry and size influence the shear strength of fiber RC. So, estimation by different codes ignores such influences and shows the same results of shear strength, which cannot verify experimental observations …”

Section: Literature Reviewsupporting

confidence: 89%

“…So, estimation by different codes ignores such influences and shows the same results of shear strength, which cannot verify experimental observations. 29 With such a background, experiments were conducted to evaluate the workability, compressive strength, and shear strength of fiber RC. Shear behavior was evaluated by casting RC beams and testing them using a four-point bending test.…”

Section: Literature Reviewmentioning

confidence: 99%

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Influence of steel fibers extracted from waste tires on shear behavior of reinforced concrete beams

Rashid

Balouch²

2017

Structural Concrete

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The accumulation of worn‐out tires creates health and fire hazards, and researchers are busy to incorporate waste tire rubber in concrete instead of burning or dumping. After shredding of waste tires, steel beads were separated by magnetic separator. The potential utilization of wasted steel fibers in concrete was investigated in this experimental work; fresh and hardened properties of fiber‐reinforced concrete (RC) were evaluated and compared with the conventional concrete. Shear behavior was investigated by conducting a four‐point bending test on RC beams. Five types of RC beams were cast; two control specimens were cast, with and without stirrups, by using conventional concrete. Three types of beams were cast by using 0.40, 0.65, and 1.00% fibers by volume. Workability of fiber RC was lower than the conventional concrete. Linear increase in failure load was observed with an increase in the dosage of fibers, and a 64.3% increase in failure load was observed after 1% addition as compared to control specimen. Mid‐span deflection, crack initiation load, and ultimate shear load were also increased with the addition of fibers. Crack spacing was reduced by 64.2% of specimen, with 1% dosage of fibers as compared to a control specimen without any stirrups, and a reduction in crack width was also observed with the addition of fibers.

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Section: Literature Reviewsupporting

confidence: 89%

Section: Literature Reviewmentioning

confidence: 99%

Influence of steel fibers extracted from waste tires on shear behavior of reinforced concrete beams

Rashid

Balouch²

2017

Structural Concrete

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“…The increasing of compressive strength is due to the functioned of steel fibers addition to improved post-cracking behavior. This is supported by the previous researchers where Cuenca et al conclude steel fibers act to bridge the crack spot if the total amount of steel fibers is sufficient [16]. The addition of steel fibers in alkali activated material concrete give minor effect to the enhancement of alkali activated material concrete which is about 19 % increment at 3 % steel fibers additions (optimum…”

Section: Resultssupporting

confidence: 60%

Properties of Hooked Steel Fibers Reinforced Alkali Activated Material Concrete

et al. 2016

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In this study, alkali activated material was produced by using Class F fly ash from Manjung power station, Lumut, Perak, Malaysia. Fly ash then was activated by alkaline activator which is consisting of sodium silicate (Na 2 SiO 3 ) and sodium hydroxide (NaOH). Hooked end steel fibers were added into the alkali activated material system with percentage vary from 0 % -5 %. Chemical compositions of fly ash were first analyzed by using x-ray fluorescence (XRF). All hardened alkali activated material samples were tested for density, workability, and compression after 28 days. Results show a slight increase of density with the addition of steel fibers. However, the workability was reduced with the addition of steel fibers content. Meanwhile, the addition of steel fibers shows the improvement of compressive strength which is about 19 % obtained at 3 % of steel fibers addition.

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“…In reinforced concrete (RC) beams, fibers can be used as distributed reinforcement to enhance the response at both serviceability limit states (SLS) and ultimate limit states (ULS). In particular: at SLS, fibers can improve the crack control and deflection control by transferring stresses at crack (tension softening), leading to a more diffused crack pattern characterized by narrower and more closely spaced cracks as compared to RC beams without fibers; at ULS, fibers can be mainly used as shear reinforcement, as well as to increase in some cases the flexural bearing capacity . In fact, fiber effect on the flexural bearing capacity are either minor or important as a function of FRC toughness‐to‐longitudinal reinforcement ratio adopted.…”

Section: Introductionmentioning

confidence: 99%

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

Conforti

Zerbino

Plizzari

2018

Structural Concrete

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The use of fibers can improve the behavior at serviceability limit states (crack and deflection control) and ultimate limit states (bearing capacity) of reinforced concrete (RC) elements under flexure. Fibers reinforcement provides a postcracking resistance, leading RC element to have a more diffused crack patterns characterized by narrower and more closely spaced cracks. Some doubts are instead related to RC element ductility, which can be affected by crack localization after rebar yielding. However, most of experiments present in literature relate only to elements in steel fiber reinforced concrete with significant residual strengths (f R,1 and f R,3 greater than 3.5-4.0 MPa). This paper aims to evaluate the influence of different fiber type (steel, glass, or polymer macrofibers) on the cracking and strength capacity of RC beams under flexure by using a broad range of Fiber Reinforced Concrete (FRC) toughness (1.6 ≤ f R,1 ≤ 5.1 MPa and 0.8 ≤ f R,3 ≤ 4.5 MPa). Twenty-one small scale RC beams with a typical value of longitudinal reinforcement ratio (0.87%) were tested under flexure. Crack and deflection control, as well as bearing capacity and crack localization were evaluated as a function of FRC toughness. Finally, results were compared against mean crack spacing and strength capacity predictions of fib Model Code 2010.

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Influence of concrete matrix and type of fiber on the shear behavior of self-compacting fiber reinforced concrete beams

Cited by 72 publications

References 17 publications

Influence of steel fibers extracted from waste tires on shear behavior of reinforced concrete beams

Influence of steel fibers extracted from waste tires on shear behavior of reinforced concrete beams

Properties of Hooked Steel Fibers Reinforced Alkali Activated Material Concrete

Influence of steel, glass and polymer fibers on the cracking behavior of reinforced concrete beams under flexure

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