Experimental Study on Mechanical Properties of Steel and Polypropylene Fiber-Reinforced Concrete

Shan, Liang; Zhang, Liang

doi:10.4028/www.scientific.net/amm.584-586.1355

Cited by 18 publications

(11 citation statements)

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“…As a commonly used composite material for civil construction steel fibre-reinforced concrete (SFRC) combines the positive aspects of both basic materials with respect to its load bearing behaviour (e.g., [ 1 , 2 , 3 , 4 , 5 , 6 ]). Since the plain concrete has excellent resistance to compressive forces but has almost no ability to withstand tensile stresses, the fibre fraction takes up the remaining tensile forces.…”

Section: Introductionmentioning

confidence: 99%

Electrical Resistivity of Steel Fibre-Reinforced Concrete—Influencing Parameters

2021

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This paper presents a systematic study of the electrical resistivity of different steel fibre-reinforced concretes with fibre contents from 0 kg/m3 to 80 kg/m3 in order to identify possible effects of interactions among concrete composition and fibre type and content regarding electrical resistivity. Based on a literature review, four parameters, w/c ratio, binder content, ground granulated blast-furnace slag (GGBS) and fineness of cement, which show a significant influence on the electrical resistivity of plain concrete, were identified, and their influence on the electrical resistivity as well as interaction effects were investigated. The results of the experiments highlight that the addition of fibres leads to a significant decrease in electrical resistivity, independent of all additional parameters of the concrete composition. Additionally, it was shown that a higher porosity of the concrete, e.g., due to a higher w/c ratio, also results in a lower electrical resistivity. These results are in agreement with the literature review on plain concrete, while the influence of the concrete composition on the electrical resistivity is weaker with the increase in fibre content. The influence of fibre reinforcement is thus not affected by changes in the concrete composition. In general, a higher fibre dosage leads to a decrease in electrical resistivity, but the impact on the electrical resistivity varies slightly with different types of steel fibres. Based on this study, the potential of determining the fibre content using electrical resistivity measurements could be clearly presented.

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Section: Introductionmentioning

confidence: 99%

Electrical Resistivity of Steel Fibre-Reinforced Concrete—Influencing Parameters

2021

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“…Wang et al reported that 1% V f offered better technical benefits than other V f [37]. In addition, the length-to-diameter ratio of fibers (l/d) positively affected the compressive load capacity of SFRC [38]. On the other hand, when V f exceeded a specific threshold, it caused a negative result in the compressive load capacity [39].…”

Section: Introductionmentioning

confidence: 99%

Structural Behavior of Circular Concrete Columns Reinforced with Longitudinal GFRP Rebars under Axial Load

Sajedi,

Saffarian,

Pourbaba

et al. 2024

Buildings

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This paper presents experimental and theoretical assessments of the structural behavior of circular steel fiber-reinforced concrete (SFRC) columns reinforced with glass fiber-reinforced polymer (GFRP) bars subjected to a concentric axial compressive load. Laboratory experiments were planned to evaluate and compare the effect of different design parameters on the structural behavior of column specimens based on experiments and finite element (FE) analysis. The experimental variables were (i) concrete types, i.e., conventional concrete (CC) and fiber-reinforced concrete (FC), (ii) longitudinal reinforcement types, i.e., steel and GFRP bars, and (iii) transverse rebar configurations, i.e., tied and spiral with different pitches. Sixteen column specimens were fabricated and categorized into four groups with respect to rebar configurations and concrete types. The results showed that the failure modes and cracking patterns of those four column groups were comparable, particularly in the pre-peak branches of load-deflection curves. Even though the average ultimate load of the columns with longitudinal GFRP bars was 17.9% less than that with longitudinal steel bars, the ductility index (DI) was 10.2% greater than their counterpart on average. The addition of steel fibers (SF) to concrete increased the axial peak load by up to 3.1% and the DI by up to 6.6% compared to their counterpart CC columns without SFs. The DI of specimens was increased by higher volumetric ratios (up to 12%) and spiral types (up to 5.5%). The concrete damage plastic (CDP) model for FC columns was updated in the finite element software ABAQUS 6.14. Finally, a new simple equation was theoretically proposed to predict the axial capacity of specimens by considering the inclusion of longitudinal GFRP rebars, volumetric ratio, and steel spiral/hoop ties. Good agreement between the proposed model predictions and the experimental/numerical results was observed.

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“…It consists of plain concrete (PC) and macroscopic steel fibers, which are mostly produced out of wires (see, e.g., Refs. [1][2][3][4][5][6]. SFRC combines positive features from both of its components and compensates their disadvantages.…”

Section: Introductionmentioning

confidence: 99%

Electrical resistivity measurements to determine the steel fiber content of concrete

Cleven

Raupach

Matschei

2022

Structural Concrete

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Experimental Study on Mechanical Properties of Steel and Polypropylene Fiber-Reinforced Concrete

Cited by 18 publications

References 1 publication

Electrical Resistivity of Steel Fibre-Reinforced Concrete—Influencing Parameters

Electrical Resistivity of Steel Fibre-Reinforced Concrete—Influencing Parameters

Structural Behavior of Circular Concrete Columns Reinforced with Longitudinal GFRP Rebars under Axial Load

Electrical resistivity measurements to determine the steel fiber content of concrete

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