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Open AccessArticle

Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups

1
Politécnico, Universidad San Francisco de Quito, Quito 170901, Ecuador
2
Concrete Structures, Department of Engineering Structures, Civil Engineering and Geosciences, Delft University of Technology, 2628 CN Delft, The Netherlands
Materials 2019, 12(6), 917; https://doi.org/10.3390/ma12060917
Received: 26 February 2019 / Revised: 7 March 2019 / Accepted: 11 March 2019 / Published: 19 March 2019
(This article belongs to the Section Construction and Building Materials)
Adding steel fibers to concrete improves the capacity in tension-driven failure modes. An example is the shear capacity in steel fiber reinforced concrete (SFRC) beams with longitudinal reinforcement and without shear reinforcement. Since no mechanical models exist that can fully describe the behavior of SFRC beams without shear reinforcement failing in shear, a number of empirical equations have been suggested in the past. This paper compiles the existing empirical equations and code provisions for the prediction of the shear capacity of SFRC beams failing in shear as well as a database of 488 experiments reported in the literature. The experimental shear capacities from the database are then compared to the prediction equations. This comparison shows a large scatter on the ratio of experimental to predicted values. The practice of defining the tensile strength of SFRC based on different experiments internationally makes the comparison difficult. For design purposes, the code prediction methods based on the Eurocode shear expression provide reasonable results (with coefficients of variation on the ratio tested/predicted shear capacities of 27–29%). None of the currently available methods properly describe the behavior of SFRC beams failing in shear. As such, this work shows the need for studies that address the different shear-carrying mechanisms in SFRC and its crack kinematics. View Full-Text
Keywords: beams; database; experiments; flexure; shear; steel fiber reinforced concrete beams; database; experiments; flexure; shear; steel fiber reinforced concrete
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    Doi: 10.5281/zenodo.2578060
MDPI and ACS Style

Lantsoght, E.O.L. Database of Shear Experiments on Steel Fiber Reinforced Concrete Beams without Stirrups. Materials 2019, 12, 917.

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