Compressive and tensile properties of reactive powder concrete with steel fibres at elevated temperatures

Zheng, Wenzhong; Luo, Bin; Wang, Ying

doi:10.1016/j.conbuildmat.2012.12.066

Cited by 168 publications

(72 citation statements)

References 18 publications

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“…To minimize the impact of the mixing process, all the mixtures were made using the same planetary mixer. Based on previous studies [28,35], the mixing procedure is as follows:…”

Section: Rpc Mixtures and Curing Conditionsmentioning

confidence: 99%

Analysis and Modelling of Shrinkage and Creep of Reactive Powder Concrete

et al. 2018

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The objective of this study was to examine the shrinkage and creep of reactive power concrete (RPC) with different steel fibre contents (0%, 1% and 2% by volume). A total of 37 RPC specimens were prepared and tested for compression strength, elastic modulus, shrinkage, and creep. In addition, different axial stress ratios (0.2, 0.3 and 0.4) were used in the creep tests. Furthermore, the accuracy of the ACI 209-82 model, CEB-FIP 90 model, B3 model, and GL 2000 model for predicting the shrinkage and creep of RPC was evaluated and new numerical shrinkage and creep models were developed. The experimental results revealed that the compressive strength and elastic modulus increase with increasing steel fibre content. The shrinkage and creep decreased with increasing addition of steel fibre from 0% to 2%. A good linear relationship was found between the axial stress ratios and creep strain. All four existing models were unable to accurately predict the shrinkage and creep of RPC. A good agreement between the experimental results and proposed shrinkage and creep numerical models was observed. Therefore, it is suggested that the proposed shrinkage and creep models can be used to calculate the shrinkage and creep of RPC.

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“…To minimize the impact of the mixing process, all the mixtures were made using the same planetary mixer. Based on previous studies [28,35], the mixing procedure is as follows:…”

Section: Rpc Mixtures and Curing Conditionsmentioning

confidence: 99%

Analysis and Modelling of Shrinkage and Creep of Reactive Powder Concrete

et al. 2018

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“…[10][11][12][13] For these reasons, combination of steel and polypropylene fibers to improve the mechanical properties of the concrete against a possible fire were investigated by several researchers. [14][15][16][17][18][19][20] Bentur and Mindess 21 found that the addition of SFs to high-strength concrete improves the load-carrying capacity of flexural members, thereby extending toughness and also the deflection capacity in post-cracking zone. Kim et al 22 observed that the SF enhances the mechanical behavior of RC members through the improvement in bond stress between reinforced steel and concrete.…”

Section: Introductionmentioning

confidence: 99%

“…For this reason, the present study is a novel attempt using experimental work to investigate the behavior of SF-reinforced self-compacting concrete corbels subjected to temperatures up to 750 C. There are three types of the heating processes: stressed test, unstressed test, and unstressed residual property test. 20 In the present study, residual test was adopted. In this test, the specimens are heated to the desired temperature and after cooling them, the required tests are performed.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of steel fiber‐reinforced self‐compacting concrete corbels after exposure to elevated temperatures

Abdulhaleem

Gülşan

Çevik

2018

Structural Concrete

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The paper presents an experimental study to investigate the effect of steel fiber (SF) on the mechanical behavior of self‐compacting concrete corbels after exposure to elevated temperatures. This research examines the most relevant parameters that influence the behavior of reinforced concrete corbels (RC‐corbels). These parameters comprise of the grade of concrete (medium [C50] and high strength concrete [C80]), the shear span‐to‐depth ratio (0.6 and 0.8), and the reinforcement ratio (0.82 and 1.6%). RC‐corbels were prepared from self‐compacting concrete with a constant percentage of polypropylene fiber of 0.1% and three different SF volume fractions of 0, 0.5, and 1.0%. All RC‐corbels were tested before and after exposure to elevated temperatures (250, 500 and 750 °C). The results were presented in terms of load–deflection curves, crack patterns and failure modes. Results showed that the SFs have a positive effect on load‐carrying capacity and ductility of RC‐corbels both before and after exposure to elevated temperatures.

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“…Since RPC is a strong and brittle material, fibers are typically added to the RPC mixture to improve its tensile strength and ductility. Steel fibers in RPC change the failure behavior of the material from sudden explosive to ductile, which makes it more suitable for many applications [19,20]. Typical steel fiber content and a steel fiber to total binder ratio are 190-250 kg/m 3 and 0.15-0.30 (by weight), respectively [5,11,14].…”

Section: Introductionmentioning

confidence: 99%

Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

et al. 2018

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Reactive Powder Concrete (RPC) is a newly emerging concrete material that is being used for various applications where high-strength concrete is required. RPC is obtained by removing coarse aggregates and adding fine powders such as silica fume into the concrete mixture. This research has focused on the proportioning and characterization of RPC mixture to be used as a material for energy storage pile application. For mixture parameters, the water-to-binder ratio (WB), silica fume (SF) content, and normal and warm temperature curing have been selected. The relative flowability, penetration resistance, setting time, drying shrinkage, and compressive and flexural strengths were evaluated. Based on the test results, the mixture with WB = 0.22 and SF = 20% was the best mixture with the highest tensile strength and other characteristics. Response surface methodology (RSM) was used to design the experiments and find the optimum mixture proportions to achieve the highest compressive strength. The optimum WB and SF content to achieve the highest strength for combined ages (7 days, 28 days, and 56 days) was determined to be WB = 0.213 and SF = 20%. Through the comparison between the test results and the required strength from analytical simulations, the RPC studied in this paper was deemed to be suitable for the energy storage pile.

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Compressive and tensile properties of reactive powder concrete with steel fibres at elevated temperatures

Cited by 168 publications

References 18 publications

Analysis and Modelling of Shrinkage and Creep of Reactive Powder Concrete

Analysis and Modelling of Shrinkage and Creep of Reactive Powder Concrete

Mechanical behavior of steel fiber‐reinforced self‐compacting concrete corbels after exposure to elevated temperatures

Proportioning and Characterization of Reactive Powder Concrete for an Energy Storage Pile Application

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