Post-Cracking Behaviour of High Strength Fiber Concrete. Prediction and Validation

International Conference on Applied Mechanics and Mechanical Engineering (ICAMME 2011) 2011
Andrejs Krasņikovs, Olga Kononova, Amjad Khabaz, Edgars Mačanovskis, Artūrs Mačanovskis

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.

Atslēgas vārdi
crack, fiber concrete, fiber pull-out, strength

Krasņikovs, A., Kononova, O., Khabaz, A., Mačanovskis, E., Mačanovskis, A. Post-Cracking Behaviour of High Strength Fiber Concrete. Prediction and Validation. No: International Conference on Applied Mechanics and Mechanical Engineering (ICAMME 2011), Itālija, Venice, 28.-30. novembris, 2011. Venice: , 2011, 988.-992.lpp.

Publikācijas valoda
English (en)