Commenced in January 2007
Frequency: Monthly
Edition: International
Paper Count: 31100
Post-Cracking Behaviour of High Strength Fiber Concrete Prediction and Validation

Authors: Andrejs Krasnikovs, Olga Kononova, Amjad Khabbaz, Edgar Machanovsky, Artur Machanovsky


Fracture process in mechanically loaded steel fiber reinforced high-strength (SFRHSC) concrete is characterized by fibers bridging the crack providing resistance to its opening. Structural SFRHSC fracture model was created; material fracture process was modeled, based on single fiber pull-out laws, which were determined experimentally (for straight fibers, fibers with end hooks (Dramix), and corrugated fibers (Tabix)) as well as obtained numerically ( using FEM simulations). For this purpose experimental program was realized and pull-out force versus pull-out fiber length was obtained (for fibers embedded into concrete at different depth and under different angle). Model predictions were validated by 15x15x60cm prisms 4 point bending tests. Fracture surfaces analysis was realized for broken prisms with the goal to improve elaborated model assumptions. Optimal SFRHSC structures were recognized.

Keywords: Strength, crack, fiber concrete, fiber pull-out

Digital Object Identifier (DOI):

Procedia APA BibTeX Chicago EndNote Harvard JSON MLA RIS XML ISO 690 PDF Downloads 1806


[1] Armelin HS, Banthia N 'Predicting the flexural post cracking performance of steel fiber reinforced concrete from the pullout of single fibers', ACI Mater J 94:18-31.
[2] Robins P, Austin S, Jones P 'Pull-out behavior of hooked steel fibers', Mater Struct 35:434-442.
[3] Krasnikovs A. & Kononova O., 'Strength Prediction for Concrete Reinforced by Different Length and Shape Short Steel Fibers', Sc. Proceedings of Riga Technical University. Transport and Engineering, 6, vol.31, 2009, pp.89-93.
[4] Krasnikovs A., Kononova O. & Pupurs A., 'Steel Fiber Reinforced Concrete Strength' Sc. Proceedings of Riga Technical University. Transport and Engineering, 6, vol.28, Riga, 2008, pp. 142-150.
[5] A. Krasnikovs, A. Khabbaz, I. Telnova, A. Machanovsky and J. Klavinsh 'Numerical 3D investigation of non-metallic (glass, carbon) fiber pull-out micromechanics (in concrete matrix)', Sc. Proceedings of Riga Technical University, Transport and engineering, 6, vol. 33, 2010, p.103-108.
[6] Pupurs A., Krasnikovs A. and Varna J. 'Energy release rate based fiber/matrix debond growth in fatigue'. Part II: Debond growth analysis using Paris law. Mechanics of Advanced Materials and Structures, Submitted 2009.
[7] Victor C. Li., 'On Engineered Cementitious Composites a Revue of the Material an it-s Applications-, J. of Advanced Concrete Technology, Vol.1, No3, 2003, pp. 215-230.