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This paper presents an experimental investigation on the stress-strain behavior and damage evolution of steel-polypropylene hybrid fiber reinforced concrete (HFRC) with different fiber types, volume fractions, and aspect ratios. The damage evolution laws of HFRC were obtained using uniaxial cyclic compression and tension tests. The results show that the addition of hybrid fiber has a significant synergetic effect …
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60 kg/m 3 of steel fibers submitted to four-point bending tests. In the first part, the procedures for the classification and characterization of the mate-rial are explained. The experimental results of three-point bending tests performed on notched steel fiber reinforced concrete (FRC) beams follow-ing EN 14651 procedures are described.
The strength of 15 steel fibers reinforced and plain concrete ground slabs. The slabs were 2x2x0.12m, reinforced with hooked end steel fibers and mill cut steel fibers. Effect of steel fiber on impact capacity and toughness of concrete: Toughness is a measure of the ability of the material to absorb energy during deformation.
This study presents the experimentation of dynamic impact tests on steel fiber-reinforced concrete (SFRC) specimens to analyze dynamic constitutive equation. The dynamic compression experimentation of SFRC with a fiber volume ratio of 0%, 0.75%, and 1.5% was conducted using a Φ75 mm-diameter split Hopkinson pressure bar experimental system.
Steel fiber reinforced concrete (SFRC) has been proved to be an appropriate material to resist extreme dynamic loadings. To explore the structural behavior of the SFRC component under multiple impact loadings, eight beams with continuous rebars were tested with a drop hammer system.
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Dynamic tests of two sets of parallel one-bay, two-story concrete plane frames were carried out at the University of British Columbia to assess the effectiveness of using steel fiber reinforced concrete in the design of seismic-resistant structures.
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Current Research and Applications of Fiber Reinforced Concrete Composites in India V. S. PARAMESWARAN, T. S. KRISHNAMOORTHY, AND K. BALASUBRAMANIAN Cement and concrete matrices reinforced with randomly oriented short fibers are finding increasing applications in both precast and in situ concrete construction.
Except for service loadings, concrete or steel fiber reinforced concrete (SFRC) may be subjected to some extreme loadings, such as fire, impact, blast or their combinations during occasional events. In order to capture the mechanical behavior of SFRC subjected to both high temperature and high strain rate, three SFRC mixtures with different steel fiber volume fractions were experimentally ...
With increasing steel fiber dosage, the relative dynamic elastic moduli of samples increased gradually. Compared to the concrete without steel fiber, the relative dynamic elastic modulus of concrete reinforced by 2.5% steel fibers was improved by 59.2% after the specimens were subjected to 50 cycles.
A comparison between static and dynamic tests highlightedseveral relevant aspects regarding the material behaviour at high displacement rates. Dynamic Tensile Behaviour of Self Compacting Steel Fibre Reinforced Concrete | Scientific.Net
This study performs drop-weight impact tests to investigate the behaviour of concrete beams reinforced by different types of steel fibres. The quasi-static compressive and split tensile tests were also conducted to obtain the static properties of plain concrete and steel fibre reinforced concrete …
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Our thanks to Assir Melamed of Domecrete for bringing this test to our attention. Testing device for measuring steel fiber content consists of three screens with successively smaller openings. A concrete sample of known volume is washed over the screens and a magnet is then used to remove steel fibers for weighing.
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Hooked steel bres 35 mm long were used. The fibre content was 50 kg/m3. The material behaviour was investigated at high displacement rates (1.2 m/s) by exploiting a modied Hopkinson bar (MHB) and the tests results were compared with the results obtained in static tests.
2020-04-21 · But all these measures do not improve the post cracking behavior of concrete. In fiber reinforced concrete, short discontinuous fibers are added to plain and reinforced concrete to improve the post cracking behavior and tensile strength to weight ratio. Fly ash is the fine powder produced as a product from the combustion of pulverized coal.
mechanical properties and durability of fiber reinforced concrete. In particular, issues related to fiber-matrix interaction, reinforcement mechanisms, standardized testing, resistance to dynamic loads, and transport properties are discussed. Keywords: FRC, fiber reinforced concrete, fiber-matrix interaction, dynamic loads
The study on steel fiber reinforced concrete under dynamic compression by damage mechanics method Wang Jianhua 1,2, Lou Jun 2 and Yang Haiping 2 1School of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, China 2Zhejiang Tongji Vocational College of Science and Technology, Hangzhou, China
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An improved HJC constitutive model for high parameter steel fiber reinforced concrete is obtained by introducing the modification of the steel fiber reinforced, toughened, and strain rate effects into the HJC constitutive model. Dynamic analysis of high parameter steel fiber reinforced concrete is achieved by using the improved model.
29-08-2012 · First, the results of the pseudo dynamic (PsD) tests conducted on three two story-three bay reinforced concrete (RC) frames are presented. One of the test frames was a reference frame with infill walls, while the others were strengthened with chevron brace and internal steel frame. For PsD tests, Duzce motion record was applied. A nonlinear time history analysis was performed to observe the …
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Failure analysis of reinforced concrete was a leading subject for research in the late 80’s and 90’s in Europe, the US and Japan. Mathematical formulations for cracking and crushing of concrete were developed and validated in experimental tests.
S.M. Ibrahim et al. / Strain Rate Dependent Behavior and Modeling for Compression Response of Hybrid Fiber Reinforced Concrete 1697 Latin American Journal of Solids and Structures 13 (2016) 1695-1715 the concrete materials was significantly increased under dynamic compression. Based on tests con-
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