Experimental study on the flexural tensile properties of aligned steel fiber–reinforced reactive powder concrete members

Yang, Kejia; Su, Hongzhi; Taguchi, Dai; Li, Kunliang; Lin, Yan

doi:10.1002/suco.202200172

Cited by 7 publications

(5 citation statements)

References 17 publications

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“…At the same reinforcement ratio, the ultimate torque was improved by 30.5% and 33.1% with increasing the steel fiber content from 0.75% to 1.5% and 3%, respectively, but the ultimate torque was improved by only 2% with increasing the steel fiber content from 1.5% to 3%. The reason was that the splitting tensile strength of UHPC was highest at 2% of steel fiber content [30]. This indicated that the ultimate load capacity of the UHPC beam was effectively improved with increasing steel fiber content or the reinforcement ratio at a reasonable reinforcement strength ratio.…”

Section: Load Capacity Analysismentioning

confidence: 98%

Torsional capacity of ultra-high-performance concrete beams using rectangle stirrup

Cao

Zhang

Ren

et al. 2023

Journal of Building Engineering

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Section: Load Capacity Analysismentioning

confidence: 98%

Torsional capacity of ultra-high-performance concrete beams using rectangle stirrup

Cao

Zhang

Ren

et al. 2023

Journal of Building Engineering

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“…The bending test of six specimens was conducted to analyze the effects of area substitution ratio and reinforcement ratio of the composite layers. Yang Kejia [19] controlled the distribution of steel fibers in RPC through a magnetic field. Four-point bending tests showed that the flexural capacity of activated powdered concrete flexural specimens after the directional distribution of steel fibers increased by 72.4-149.5%.…”

Section: Introductionmentioning

confidence: 99%

Study on the Mechanical Performance of RC Beams under Load Reinforced by a Thin Layer of Reactive Powder Concrete on Four Sides

Liao,

Yang,

Yang

2024

Buildings

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To repair reinforced concrete beams efficiently in a limited building space, the four-sided application of a reinforcing thin layer of reactive powder concrete (“RPCTL”) was proposed to improve the bending capacity of the members. Static flexural tests of one comparison beam and five reinforced beams were completed on a four-point centralized loading device. Changes in deflection, cracks, stresses, and damage characteristics of the specimens were measured under various levels of loading. The test results showed that the damage patterns of the reinforced specimens were dominated by the yielding of longitudinal tensile reinforcement at the bottoms of the beams and the crushing of the cementitious material in the top compression zones of the beams. The cracking load greatly increased by 1.42 to 7.12 times, and the ultimate bearing capacity increased by 0.29 to 1.41 times. The distribution characteristics and dynamic changes in the displacement, stress, and damage of the specimens were dynamically simulated by finite element software. The effects of reinforcement and initial load-holding level on the reinforcement effect were investigated. A bending capacity calculation formula for RPCTL reinforcement technology is proposed that aligns with the test results and can provide a reference for the design of RPCTL reinforcement.

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“…By changing the pouring method or applying an electromagnetic field, the steel fiber can be distributed parallel to the direction of the principal stress after being added. The ASFRPC (aligned steel fiber–reinforced reactive powder concrete) obtained in this preparation mode has 2–2.5 times the bending capacity of ordinary SFRPC (steel fiber reactive powder concrete) under the same conditions, which effectively improves its utilization rate and material properties [ 13 ]. The incorporation of CF can make the mechanical properties of RPC at −25 °C still superior to that of plain RPC [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Performance, Mechanical Properties and Durability of a New Type of UHPC—Basalt Fiber Reinforced Reactive Powder Concrete: A Review

Wei³

2023

Polymers

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The advent of reactive powder concrete (RPC) has brought about the era of ultra-high performance concrete (UHPC), and the incorporation of fiber has brought about more possibilities for its application. Basalt fiber reinforced reactive powder concrete (BFRPC), as the product of the combination of RPC and fiber, has become a new engineering material that has received much attention from scholars in recent years. Compared with traditional UHPC, BFRPC is superior in corrosion resistance, material compatibility, cost performance, environmental protection, and other aspects; therefore, it is destined to have a wide range of applications in the future. In this article, we extensively reviewed the literature on basalt fiber reinforced RPC in the past decade from the perspective of work performance, mechanical properties, and durability. Moreover, we summarized the research progress and achievements on BFRPCs in the following points: (1) The performance of BFRPCs is mainly influenced by three factors: the frictional resistance between fine aggregates, the consistency of the cement slurry, and the three-dimensional random interweaving of basalt fibers; (2) the mechanical properties of BFRPC are mainly influenced by curing conditions, the design of the RPC matrix proportional mix, and the addition of basalt fibers up to a threshold; (3) thanks in part to RPC’s density and the filling and bridging of fibers, BFRPC exhibits uniform and good performance in durability indicators. However, there are still some problems in the current development of BFRPC, such as inconsistent test conclusions among different scholars and a lack of scenarios in which to apply BFRPC. This paper also puts forward the prospect from the aspects of theoretical research and practical application, and provides a reference for subsequent related work.

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Experimental study on the flexural tensile properties of aligned steel fiber–reinforced reactive powder concrete members

Cited by 7 publications

References 17 publications

Torsional capacity of ultra-high-performance concrete beams using rectangle stirrup

Torsional capacity of ultra-high-performance concrete beams using rectangle stirrup

Study on the Mechanical Performance of RC Beams under Load Reinforced by a Thin Layer of Reactive Powder Concrete on Four Sides

Performance, Mechanical Properties and Durability of a New Type of UHPC—Basalt Fiber Reinforced Reactive Powder Concrete: A Review

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