File Name: steel fiber reinforced concrete behavior modelling and design .zip
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A model for non-linear calculations of steel fiber-reinforced concrete SFRC elements in compression is proposed and described technologically. The same curve produced by Eurocode 2 EC2 is used until compressive strength, although non-dimensional variables refer to fiber concrete parameters. Beyond the peak, we use a parabola that is derived so that the average energy consumption of the material equals this same mean energy obtained from a database comprised of tests. Estimates for the compressive strength of SFRC and the corresponding critical strain are also provided by correlation with the database using the surface response methodology. The total energy consumption of SFRC in compression is approximately four times higher on average than the corresponding energy of the base plain concrete, which is included in the model.
PDF | Presents a unified theory/design approach for proportioning structural members using steel fibers as reinforcement (SFRC) and/ or conventional | Find.
Behaviour and design of steel fibre reinforced concrete slabs. Using Steel Fibre Reinforced Concrete SFRC can bring substantial benefits to the construction industry of which savings in construction time and labour are most significant. In addition, steel fibres enhance crack control particularly when acting in conjunction with reinforcement bars. Despite the aforementioned benefits of SFRC, there is a still a lack of consensus on the principles that should be adopted in its design. Currently, a number of different test methods are used to determine the material properties of SFRC but there is no agreement on which method is best.
Show all documents PDF superior Assessment of the shear strength of steel fibre-reinforced concrete. Assessment of the shear strength of steel fibre-reinforced concrete The push-off tests performed suppose a further approach towards defining the contribution of the fibres in the shear behaviour of a concrete element when medium and high amounts of fib[r]. Polyolefin fibre-reinforced concrete : from material behaviour to numerical and design considerations Fibre -matrix system is effective if fibres are capable of inducing an increase in strength to the cementitious reinforced matrix. Research suggests that the reinforcement is effective in concrete when tensile strength of the fibre is significantly higher than that of concrete two or three times but also when fibre -matrix bond strength is in the same order of magnitude of the tensile strength of the matrix and fibre modulus of elasticity in tension is significantly higher than that of the concrete Naaman,
ACI International Federation for Structural Concrete fib , Lausanne. Final recommendation. Tlemat, H.
It seems that you're in Germany. We have a dedicated site for Germany. It also examines the effect of various parameters governing the response of SFRC members in detail. Unlike other publications available in the form of guidelines, which mainly describe design methods based on experimental results, it describes the basic concepts and principles of designing structural members using SFRC as a structural material, predominantly subjected to flexure and shear. Although applications to special structures, such as bridges, retaining walls, tanks and silos are not specifically covered, the fundamental design concepts remain the same and can easily be extended to these elements. It introduces the principles and related theories for predicting the role of steel fibers in reinforcing concrete members concisely and logically, and presents various material models to predict the response of SFRC members in detail. These are then gradually extended to develop an analytical flexural model for the analysis and design of SFRC members.
Pitcha Jongvivatsakul, Linh V. In this paper, the performances of reinforced concrete RC beams strengthened in shear with steel fiber-reinforced concrete SFRC panels are investigated through experiment, analytical computation, and numerical analysis. An experimental program of RC beams strengthened by using SFRC panels, which were attached to both sides of the beams, is carried out to investigate the effects of fiber volume fraction, connection type, and number and diameter of bolts on the structural responses of the retrofitted beams. The current shear resisting model is also employed to discuss the test data considering shear contribution of SFRC panels. The experimental results indicate that the shear effectiveness of the beams strengthened by using SFRC panels is significantly improved. The investigation reveals the good agreement between the experimental and analytical results in terms of the mechanical behaviors.
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