Influence of Fiber Shape and Volume Content on the Performance of Reactive Powder Concrete (RPC)

Wang, Chuanlin; Xue, Guojie; Zhao, Xianbo

doi:10.3390/buildings11070286

Cited by 8 publications

(4 citation statements)

References 56 publications

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“…It showed that appropriate ratio of length to diameter will give full play to the tensile effect of steel fiber in the material and ensure it is evenly distributed. Chuanlin Wang [12] studied the influence of three types of open and three different shapes of closed steel fibers on the working and mechanical performance of RPC, showing that the open steel fibers enhance the mechanical performance of RPC via their anchoring performance while the closed steel fibers work by confining the concrete. Qin Rong [13] studied the dynamic response of RPC columns based on the equivalent single-degree-offreedom method and P-I curve and obtained the effect of five parameters on the degree of damage under different blast loadings, which provides a valuable reference for the dynamic response of RPC members.…”

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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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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“…One of the ways to solve this problem is by adding dispersed fiber reinforcement to the cement matrix, which can significantly increase its tensile and flexural strength, crack resistance, resistance to impact and vibration, etc. [5][6][7][8]. Fiber-reinforced concrete has increased abrasion resistance as well as resistance to cracking [9].…”

Section: Introductionmentioning

confidence: 99%

Efficient, Fine-Grained Fly Ash Concrete Based on Metal and Basalt Fibers

et al. 2023

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This article presents the results of a study of the physical and mechanical properties of fine-grained fly ash concrete based on a combined reinforcement with steel and basalt fibers. The main studies were conducted using mathematical planning of experiments, which allowed the experiments to be algorithmized in terms of both the amount of experimental work and statistical requirements. Quantitative dependences characterizing the effect of the content of cement, fly ash binder, steel, and basalt fiber on the compressive strength and tensile splitting strength of fiber-reinforced concrete were obtained. It has been shown that the use of fiber can increase the efficiency factor of dispersed reinforcement (the tensile splitting strength to compressive strength ratio). To increase the resistance of basalt fiber, it is proposed to use fly ash in cement systems, which reduces the amount of free lime in the hydrating cement environment.

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“…Such fibers enhance the new contact between the fibers and mortar and stop fractures from forming. 19 It not only boosts the concrete tensile capacity but also significantly affects the material's conductivity, stability, and durability. 20 The kind of fiber and fiber-concrete mix interface qualities influence the characteristics of the concrete.…”

Section: Introductionmentioning

confidence: 99%

Thermal properties, microstructure analysis, and environmental benefits of basalt fiber reinforced concrete

Qsymah

Arbili

Ahmad

et al. 2023

Journal of Engineered Fibers and Fabrics

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Numerous scientists have studied basalt fiber (BF) reinforced concrete and found encouraging results. However, information is scattered, and compressive assessment is yet necessary to collect the data from prior research on BF, present research advancement, and future research guidelines of BF reinforced concrete. Furthermore, mostly research focus to review on strength and durability aspects of BF reinforced concrete while no researched focus on thermal properties, microstructure analysis and environmental benefits of BF reinforced concrete. Therefore, the primary focuses of this paper are BF treatment, BF reinforced concrete performance at high temperatures, microstructure analysis, environmental advantages, and application in civil engineering. Results show that BF-reinforced concrete performs much better than traditional concrete at high temperatures. Additionally, the use of BF enhanced the heat conductivity of concrete. BF addition to concrete seems to have reduced interfacial transition zone (ITZ) fractures, according to a microstructure study. When opposed to traditional steel fibers, BFs may be thought as reinforcements that are less harmful to the environment. The study also highlights the significance of BFs in the building industry. The assessment also identified research gap research for further studies.

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Influence of Fiber Shape and Volume Content on the Performance of Reactive Powder Concrete (RPC)

Cited by 8 publications

References 56 publications

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

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

Efficient, Fine-Grained Fly Ash Concrete Based on Metal and Basalt Fibers

Thermal properties, microstructure analysis, and environmental benefits of basalt fiber reinforced concrete

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