Effect of Fiber on the Concrete Resistance to Surface Scaling Due to Cyclic Freezing and Thawing

Berkowski, Piotr; Kosior‐Kazberuk, Marta

doi:10.1016/j.proeng.2015.07.065

Cited by 28 publications

(12 citation statements)

References 21 publications

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“…In another study, H. Awang et al [6] observed samples containing numerous fibers achieved higher compressive strength, tensile splitting strength, flexural strength, lower absorption and lower shrinkage readings than the control sample. Besides, the influence of fibers on cyclic freezing and thawing of concrete studied, when Berkowskia and Kazberuk [7] improved the scaling resistance significantly by using polypropylene and steel fibers. Also, evaluated the effect of different types of microfibers on the thermal properties of cementation materials was determined [8].…”

Section: Introductionmentioning

confidence: 99%

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Dahesh

Othman²,

Abdul-Hamead³

2021

ETJ

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Because cracks are the main problem of mass concrete, this paper investigates an experimental study on the effect of polypropylene microfiber (PPMFs) on self -repair behavior of mass concrete, through study the microstructure, workability, physical, and mechanical properties of mass concrete. PPMFs with a diameter of 18 µm add in different percentages (0, 0.5, 1 and 1.5) % of cement weight. Where the prepared mixture ratio was (1:2:4.8) and the water-cement ratio (W/C) was 0.4. Also, 0.6% of Superplasticizer (SP) % of cement weight to all concrete mixtures was added. In this study, an SEM analysis used to observe the effect of PPMFs on the microstructure of mass concrete, and compressive and flexural strength tests for study the mechanical properties of this. And referring to the analysis and discussion of the results, PPMFs used have changed the microstructure of mass concrete, and have an effective effect on improving compressive strength and flexural strength, and mechanism of sealing the cracks of concrete autogenously. Also, 1% PPMFs (% of cement weight) recorded as the highest addition, which has a positive effect on mass concrete properties to apply it in the construction field.

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Section: Introductionmentioning

confidence: 99%

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Dahesh

Othman²,

Abdul-Hamead³

2021

ETJ

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“…Compared to synthetic, steel fibers appeared to be more effective for freeze-thaw resistance. Also, straight short fibers have shown better efficiency than longer hooked ends fibers [ 120 ]. This can be explained by the number of fibers per unit volume of materials and in the surface layer.…”

Section: Deterioration Processes Affecting Fiber Reinforced Concrementioning

confidence: 99%

“… Weight loss of ( a ) steel-fiber FRC specimens and ( b ) polypropylene (PP) and glass fiber (GF) specimens’ solution under different freeze-thaw cycle (adapted from [ 120 , 121 , 122 , 123 , 124 ]). …”

Section: Figurementioning

confidence: 99%

Effect of Fibers on Durability of Concrete: A Practical Review

2020

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This article reviews the literature related to the performance of fiber reinforced concrete (FRC) in the context of the durability of concrete infrastructures. The durability of a concrete infrastructure is defined by its ability to sustain reliable levels of serviceability and structural integrity in environmental exposure which may be harsh without any major need for repair intervention throughout the design service life. Conventional concrete has relatively low tensile capacity and ductility, and thus is susceptible to cracking. Cracks are considered to be pathways for gases, liquids, and deleterious solutes entering the concrete, which lead to the early onset of deterioration processes in the concrete or reinforcing steel. Chloride aqueous solution may reach the embedded steel quickly after cracked regions are exposed to de-icing salt or spray in coastal regions, which de-passivates the protective film, whereby corrosion initiation occurs decades earlier than when chlorides would have to gradually ingress uncracked concrete covering the steel in the absence of cracks. Appropriate inclusion of steel or non-metallic fibers has been proven to increase both the tensile capacity and ductility of FRC. Many researchers have investigated durability enhancement by use of FRC. This paper reviews substantial evidence that the improved tensile characteristics of FRC used to construct infrastructure, improve its durability through mainly the fiber bridging and control of cracks. The evidence is based on both reported laboratory investigations under controlled conditions and the monitored performance of actual infrastructure constructed of FRC. The paper aims to help design engineers towards considering the use of FRC in real-life concrete infrastructures appropriately and more confidently.

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“…-For SFRHSC beams, the force-deflection (F-δ) and force-crack tip opening displacement (F-CTOD) relationships were almost identical (shape and area under the graph). The relationship between the deflection and crack tip opening displacement (δ-CTOD) obtained for the mean results of B-and C-series beams is described by linear regression Equations (4) and (5). These equations could be a contribution to the extension of the standard [15], which now allow for approximating the deflections (δ) of steel-fibre-modified beams only as a function of crack mouth opening displacement (CMOD).…”

Section: Final Conclusionmentioning

confidence: 99%

“…Steel fibre reinforced high-strength concrete (SFRHSC), in comparison with plain high-strength concrete, is marked by a more quasi-plastic character and increased resistance to cracking on bending [1,2]. The following should be considered to be the most important parameters of dispersed reinforcement structure, which can inhibit cracking in the cement matrix: volume of fibres in the composite (V f ) [3], slenderness of fibres (λ) [4,5], fibre material characteristics, spatial distribution of fibres in concrete [6], as well as adhesion of fibres to cement matrix, resulting from mechanical anchorage, adhesion, and friction [7]. The addition of steel fibres to concrete might improve some of its mechanical parameters, including compressive strength (f c ) [8,9] and the modulus of elasticity (E c ) [3,8,10].…”

Section: Introductionmentioning

confidence: 99%

Material Analysis of Steel Fibre Reinforced High-Strength Concrete in Terms of Flexural Behaviour. Experimental and Numerical Investigation

et al. 2020

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The paper presents the results of tests for flexural tensile strength (fct,fl) and fracture energy (Gf) in a three-point bending test of prismatic beams with notches, which were made of steel fibre reinforced high-strength concrete (SFRHSC). The registration of the conventional force–displacement (F–δ) relationship and unconventional force-crack tip opening displacement (CTOD) relationship was made. On the basis of the obtained test results, estimations of parameters fct,fl and Gf in the function of fibre reinforcement ratio were carried out. The obtained results were applied to building and validating a numerical model with the use of the finite element method (FEM). A non-linear concrete damaged plasticity model CDP was used for the description of the concrete. The obtained FEM results were compared with the experimental ones that were based on the assumed criteria. The usefulness of the flexural tensile strength and fracture energy parameters for defining the linear form of weakening of the SFRHSC material under tension, was confirmed. Own equations for estimating the flexural tensile strength and fracture energy of SFRHSC, as well as for approximating deflections (δ) of SFRHSC beams as the function of crack tip opening displacement (CTOD) instead of crack mouth opening displacement (CMOD), were proposed.

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Effect of Fiber on the Concrete Resistance to Surface Scaling Due to Cyclic Freezing and Thawing

Cited by 28 publications

References 21 publications

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Influence of Microfibers Additive on the Self-healing Performance of Mass Concrete

Effect of Fibers on Durability of Concrete: A Practical Review

Material Analysis of Steel Fibre Reinforced High-Strength Concrete in Terms of Flexural Behaviour. Experimental and Numerical Investigation

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