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Behavior of lightly reinforced fiber reinforced concrete panels under pure shear loading
Highlights Tests on six FRC panels subjected to in plane pure shear monotonic stress conditions. Evaluation of influence of fibers in lightly reinforced panels. Design of a test rig specifically developed to perform pure shear tests under displacement control. Proposal of a new analytical formulation for the prediction of crack spacing in FRC panels under pure shear.
Abstract The load-deformation response of Fiber Reinforced Concrete (FRC) elements subjected to pure shear is still matter of strong debate within the scientific community. In this paper, the tests on six fiber reinforced concrete panels under pure shear are presented and discussed. The tests were conducted under displacement control and a peculiar loading frame was designed to ensure that a pure shear state of stress was established. Steel fibers were added in relatively low amounts (20 and 50 kg/m3), and two steel reinforcements (0.21% and 0.74%) were selected, aiming at simulating lightly reinforced elements. A critical discussion on the influence of fibers on both global and local behavior (tension stiffening, cracking formation and propagation, post-cracking stiffness and residual strength) is presented. Finally, a novel crack spacing formulation, extended to FRC, is proposed and compared against available experimental data.
Behavior of lightly reinforced fiber reinforced concrete panels under pure shear loading
Highlights Tests on six FRC panels subjected to in plane pure shear monotonic stress conditions. Evaluation of influence of fibers in lightly reinforced panels. Design of a test rig specifically developed to perform pure shear tests under displacement control. Proposal of a new analytical formulation for the prediction of crack spacing in FRC panels under pure shear.
Abstract The load-deformation response of Fiber Reinforced Concrete (FRC) elements subjected to pure shear is still matter of strong debate within the scientific community. In this paper, the tests on six fiber reinforced concrete panels under pure shear are presented and discussed. The tests were conducted under displacement control and a peculiar loading frame was designed to ensure that a pure shear state of stress was established. Steel fibers were added in relatively low amounts (20 and 50 kg/m3), and two steel reinforcements (0.21% and 0.74%) were selected, aiming at simulating lightly reinforced elements. A critical discussion on the influence of fibers on both global and local behavior (tension stiffening, cracking formation and propagation, post-cracking stiffness and residual strength) is presented. Finally, a novel crack spacing formulation, extended to FRC, is proposed and compared against available experimental data.
Behavior of lightly reinforced fiber reinforced concrete panels under pure shear loading
Facconi, Luca (author) / Minelli, Fausto (author)
Engineering Structures ; 202
2019-10-31
Article (Journal)
Electronic Resource
English
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