Effects of Mixture Design Parameters on the Mechanical Behavior of High-Performance Fiber-Reinforced Concretes

Erdem, Tahir Kemal; Demirhan, Serhat; Yıldırım, Gürkan; Banyhussan, Qais Sahib; Şahin, Oğuzhan; Balav, Mohammad H.; Şahmaran, Mustafa

doi:10.1061/(asce)mt.1943-5533.0003459

Cited by 9 publications

(2 citation statements)

References 60 publications

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“…These improvements in the interfacial frictional bonding were attributed to the hydration acceleration and seeding effect coupled with the large surface areas of nanomaterials. 59,60 In a recent work of the author, 61 it was shown by SEM images that fibers pulled out of mixtures without nanomaterials were not densely covered by the remainders of cementitious matrix and pull-out process was easier. However, for fibers pulled out of mixtures with nanomaterials, pull-out process was harder, the fibers were covered with the remainders of the cementitious matrix and the surface of the fibers were rough and/or fibrillated, all of which suggesting for a better fiber-matrix frictional bonding.…”

Section: Load Versus Mid-span Deflection Curvesmentioning

confidence: 99%

Effect of different nanosized limestone formations on fiber‐matrix interface properties of engineered cementitious composites

Demirhan

2022

Structural Concrete

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Eight different ECC mixtures were produced by the utilization of three types of nanosized limestone formations as uncoated nanosized calcite (UNC), nano-CaCO 3 (NCC), and coated nanosized calcite (CNC) and also two aggregate to binder volume fractions (A/B) of 0.36 and 0.45. Mechanical properties in terms of compressive strength and flexural characteristics (flexural strength, mid-span beam deflection, and flexural toughness) were investigated at the curing ages of 7, 28, and 90 days. It was revealed that ECC mixtures modified by nanomaterials exhibited better mechanical and flexural properties regardless of curing age and type of nanosized limestone formation. ECC mixtures modified by UNC showed better contributions. Both parameters, namely curing ECC samples in air conditions and utilization of low water to binder ratio in the production of ECC mixtures, were seen as key-determinant factors through reported results. Thus, these two variables drive the nanosized limestone formations to behave mainly as a filler material instead of exhibiting the expected mechanism.

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Section: Load Versus Mid-span Deflection Curvesmentioning

confidence: 99%

Effect of different nanosized limestone formations on fiber‐matrix interface properties of engineered cementitious composites

Demirhan

2022

Structural Concrete

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“…e experimental tests investigated at the material level demonstrated that steel fibers improved the resistance to crack growth, reduced deflection, and increased the fatigue life and impact resistance of plain concrete under different loads. e inclusion of steel fibers in concrete can greatly enhance static flexural strength, impact strength, shear and torsional strength, direct tensile strength, fatigue strength, impact resistance, ductility, and failure toughness [7][8][9]. e most substantial advantage of adding fibers to concrete is the improvement in impact resistance [10][11][12][13][14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Behavior of Steel‐Fiber‐Reinforced Concrete (SFRC) Slab‐on‐Grade under Impact Loading

Tekleab

Aure

2022

Advances in Civil Engineering

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Structures such as industrial pavements, roads, parking areas, and airport runways are often slab-on-grade where steel-fiber reinforcement can substitute conventional steel reinforcement. Due to the dynamic nature of loading while in service, these structures are exposed to the damaging effects of impact loading, such as strength and stiffness deterioration in materials or structural elements. In this study, the behavior of concrete slab-on-grade with steel-fiber-reinforced concrete under impact load has been investigated by considering different parameters. Nonlinear finite element software ABAQUS/Explicit is used to simulate the system. The accuracy of the nonlinear finite element models is verified using experimental work available in the literature. A total of 108 specimens are simulated by varying the volume fraction of steel fiber by 0.5%, 1%, and 1.5% coupling with the impact mass and velocity from the control specimen and variation of load location, thickness, and aspect ratio. The analysis results revealed that the addition of 0.5%, 1%, and 1.5% volume fraction of steel fiber in concrete could effectively accommodate up to 0%, 10%, and 26% reduction of thickness, respectively. These results confirmed that the appropriate use of steel fiber in concrete can be a feasible solution to improve the overall performance of slab-on-grade. Moreover, an increase in the aspect ratio of steel fiber improves the crack resistance of steel-fiber-reinforced concrete slab-on-grade, but a further increase in aspect ratio reduces the performance due to local crushing of concrete.

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Performance enhancement of green high-ductility engineered cementitious composites by nano-silica incorporation

Zhou

Zheng

Huang

et al. 2021

Construction and Building Materials

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Effects of Mixture Design Parameters on the Mechanical Behavior of High-Performance Fiber-Reinforced Concretes

Cited by 9 publications

References 60 publications

Effect of different nanosized limestone formations on fiber‐matrix interface properties of engineered cementitious composites

Effect of different nanosized limestone formations on fiber‐matrix interface properties of engineered cementitious composites

Behavior of Steel‐Fiber‐Reinforced Concrete (SFRC) Slab‐on‐Grade under Impact Loading

Performance enhancement of green high-ductility engineered cementitious composites by nano-silica incorporation

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