Effect of Steel Fiber on Structural Characteristics of High-Strength Concrete

Sumathi, A.; Mohan, K. Saravana Raja

doi:10.1007/s40996-018-0152-x

Cited by 14 publications

(6 citation statements)

References 15 publications

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“…ere are three reasons for the small values of the test. (1) When simulating the ultimate bearing capacity of the LSFRC plates, there is a lack of consideration of the concrete in the compression area, resulting in a larger midspan deflection. (2) e constitutive relation derived by the empirical formula of ABAQUS may deviate from the actual stressstrain relation of the concrete.…”

Section: Comparison Between the Results Of Numerical Simulation And Testmentioning

confidence: 99%

“…Steel ber reinforced concrete (SFRC) has better mechanical properties than normal concrete. Since its creation, SFRC has been widely studied by scholars, especially for its mechanical properties and deformation capacity [1][2][3]. e results show that steel ber not only improves the tensile strength [4], shear strength [5], and bending strength [6] of the concrete but also increases its toughness [7] and resistance [8], so SFRC shows better fatigue performance [9] and durability [10,11].…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Flexural Bearing Capacity and Failure Mode of Precast LSFRC Pavement Slab

Wang

Ban

Luo

et al. 2022

Advances in Materials Science and Engineering

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To promote practical use of the top-and-bottom layered steel fiber reinforced concrete (LSFRC) plates, an appropriate constitutive model is selected using ABAQUS software to analyze the bearing capacity, failure pattern, and deformation of the LSFRC plates. An LSFRC plate model is established for the analysis and calculation. Meanwhile, a test was carried out to measure the bearing capacity of 10 LSFRC plates. The results show that, after going through the elastic stage, crack growth, and failure stage, when the maximum crack width reaches 0.1 mm, the load of the LSFRC plates can be used as the ultimate bearing load. When failure appears to be bending the LSFRC plates, the neutral axis will shift upwards, showing a pseudoplastic failure. There is a larger tensile stress area after the first crack appears at the bottom of the steel fiber concrete. The change before and after the maximum load is relatively gentle. After becoming plastic, the plate witnesses a rapid crack growth on its bottom. With similar results from the test and numerical simulation, small errors can be minimized by further analysis to provide a more accurate model for the subsequent bearing capacity analysis of the LSFRC plates.

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Section: Comparison Between the Results Of Numerical Simulation And Testmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Flexural Bearing Capacity and Failure Mode of Precast LSFRC Pavement Slab

Wang

Ban

Luo

et al. 2022

Advances in Materials Science and Engineering

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“…In general, steel fbres are recognized for their good bridging efect, better tensile properties, proven impact resistance, and arresting of crack propagation characteristics [38][39][40], and so they can be utilized to enhance the durability characteristics as they help in reducing propagation of cracks. Te diverse mechanical properties of concrete prepared with NS individually and combined with NS and MWCNTs, for various amounts of nanomaterials, diferent curing periods, and incorporation of steel fbres, were discussed by Sumathi et al in their study [41][42][43], and the authors in their research using steel fbres indicated that incorporation of 1% improved the mechanical and structural properties of high-strength concrete. Murali et al [44,45] have tested the impact strength of concrete specimens made with MWCNY and diferent fbres such as short steel fbre, long steel fbre, and polypropylene fbres and have reported that addition of fbres substantially increased the fracture resistance of the specimens.…”

Section: Use Of Steel Fibres Along With Mwcntmentioning

confidence: 99%

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Sumathi

Elavarasi

Karthikeyan

et al. 2023

Advances in Materials Science and Engineering

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In present research, the strength properties, impact resistance, and durability characteristics of high-strength concrete blended with nanosilica (NS) and reinforced with multi-walled carbon nanotubes (MWCNTs) are discussed. The proportion consists of nanosilica added in a constant addition of 1% and MWCNT added in a varied dosage of 0.025%, 0.05%, 0.1%, 0.15%, and 0.2% by weight of the cement. A total of 11 mixes were made including the control mix having no MWCNT. The other 10 mixes were categorized into two classes with one class having steel fibres incorporated as 1% of the total volume of the concrete along with the other ingredients such as 1% NS and different proportions of MWCNT. The other class was made without steel fibres retaining only the NS and different MWCNT proportions. Besides the standard compression and tension tests, to determine the energy absorbing capacity of the mix specimens, impact test was also performed. The strength tests were carried out for 3, 7, and 28-day curing. Also, durability tests were carried out with sorptivity, porosity, and mass loss of the specimens when exposed to aggressive HCL and H2SO4 acid. To validate the experiment results, microstructure studies such as scanning electron microscopy (SEM) were also conducted on the samples. Among all mixes, 28-day compressive strength (CS) of 0.2% MWCNT with 1% NS and 1% steel fibre mix was found to increase by 22% compared to control concrete.

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“…In different designs [7][8][9][10][11][12], adding randomly distributed short fibers into the concrete matrix to improve the tensile and crack resistance is an excellent method [13][14][15][16][17][18][19]. Experiments showed that steel fiber had little contribution to compressive strength [20][21][22][23][24], but it can obviously improve the compressive behavior of stress and strain after cracking and also shows apparent toughness [25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Steel Fiber Reinforced High–Strength Concrete Beam–Column Joints

Shi

Zhang

et al. 2021

Materials

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In high–strength concrete, the reinforcement concentration will cause some problems in the beam–column joints (BCJs) due to a large amount of transverse reinforcement. Hence, the main object of this paper is to prevent the reinforcement concentration and reduce the amount of transverse reinforcement in the BCJs through the ideal usage of steel fibers and reinforced high–strength concrete. Pseudo–static tests on seven specimens were carried out to investigate and evaluate the seismic performance of beam–column joints in steel fiber reinforced high–strength concrete (SFRHC). Test variables were steel fiber volume ratio, concrete strength, the stirrup ratio in the core area, and an axial compression ratio of the column end. During the test, the hysteresis curves and failure mode were recorded. The seismic indicators, such as energy dissipation, ductility, strength, and stiffness degradation, were determined. The experimental results indicated that the failure modes of SFRHC beam–column joints mainly included the core area failure and the beam end bending failure. With the increase in stirrup ratio, volume ratio of steel fiber, and axial compression ratio in the core area, both the ductility and energy consumption of beam–column joints increased, while the opposite was true for concrete strength.

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Effect of Steel Fiber on Structural Characteristics of High-Strength Concrete

Cited by 14 publications

References 15 publications

Analysis of Flexural Bearing Capacity and Failure Mode of Precast LSFRC Pavement Slab

Analysis of Flexural Bearing Capacity and Failure Mode of Precast LSFRC Pavement Slab

Mechanical, Durability, and Microstructure Investigations on High-Strength Concrete Incorporating Nanosilica, Multi-Walled Carbon Nanotubes, and Steel Fibres

Seismic Performance of Steel Fiber Reinforced High–Strength Concrete Beam–Column Joints

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