Title:
Shear Behavior of Concrete Walls Retrofitted with Ultra-High-Performance Fiber-Reinforced Concrete Jackets
Author(s):
Renaud Franssen, Luc Courard, and Boyan I. Mihaylov
Publication:
Structural Journal
Volume:
118
Issue:
5
Appears on pages(s):
149-160
Keywords:
kinematic model; retrofit; shear; ultra-high-performance fiber-reinforced concrete (UHPFRC); wall-type bridge piers; walls
DOI:
10.14359/51732825
Date:
9/1/2021
Abstract:
Ultra-high-performance fiber-reinforced concrete (UHPFRC) possesses outstanding mechanical properties and high durability, and thus can provide effective retrofit solutions for concrete walls and wall-type bridge piers. This self-leveling material can be cast in thin layers around the pier to protect it from corrosive environments and to enhance its shear resistance. However, while this is a promising solution, research has focused mostly on the retrofit of slabs and beams. To address this gap in knowledge, this paper presents results from four large-scale tests of shear-critical concrete walls with and without UHPFRC jackets. The test variables are the thickness of the jacket, the preparation of the concrete surface, and the level of axial load. It is shown that water-jetting of the surface ensures an effective composite action of the concrete and UHPFRC, while a smooth surface results in early debonding. It is also demonstrated that, while the reference reinforced concrete specimen failed in brittle shear, water-jetted walls with 30 and 50 mm jackets reached their flexural capacity and exhibited enhanced crack control. In addition to test results, the study also proposes and validates a three-degree-of-freedom kinematic model to accurately describe the deformation patterns of UHPFRC-strengthened walls.
Related References:
1. Bruhwiler, E., “Renforcement et Réhabilitation des Structures en Béton au Moyen du BFUP Armé,” research seminar at the Université de Liège, Liège, Belgium, 2016.
2. Brühwiler, E., and Denarié, E., “Rehabilitation and Strengthening of Concrete Structures Using Ultra-High Performance Fibre Reinforced Concrete,” Structural Engineering International, V. 23, No. 4, 2013, pp. 450-457. doi: 10.2749/101686613X13627347100437
3. Charron, J. P.; Denarié, E.; and Brühwiler, E., “Permeability of Ultra-High-Performance Fiber Reinforced Concretes (UHPFRC) Under High Stresses,” Materials and Structures/Materiaux et Constructions, V. 40, No. 3, 2007, pp. 269-277.
4. Abbas, S.; Nehdi, M. L.; and Saleem, M. A., “Ultra-High Performance Concrete: Mechanical Performance, Durability, Sustainability and Implementation Challenges,” International Journal of Concrete Structures and Materials, V. 10, No. 3, 2016, pp. 271-295. doi: 10.1007/s40069-016-0157-4
5. Leutbecher, T., and Fehling, E., “Tensile Behavior of Ultra-High-Performance Concrete Reinforced with Reinforcing Bars and Fibers: Minimizing Fiber Content,” ACI Structural Journal, V. 109, No. 2, Mar.-Apr. 2012, pp. 253-264.
6. Richard, P., and Cheyrezy, M., “Composition of Reactive Powder Concretes,” Cement and Concrete Research, V. 25, No. 7, 1995, pp. 1501-1511. doi: 10.1016/0008-8846(95)00144-2
7. Noshiravani, T., “Structural Response of R-UHPFRC - RC Composite Members Subjected to Combined Bending and Shear,” PhD thesis, École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland, 2012.
8. Sadouki, H.; Bruhwiler, E.; and Zwicky, D., “Chillon Viaduct Deck Slab Strengthening Using Reinforced UHPFRC: Numerical Simulation of Full-Scale Tests,” Proceedings of the 4th International Conference on Concrete Repair, Rehabilitation and Retrofitting, ICCRRR 2015, 2015.
9. Noshiravani, T., and Brühwiler, E., “Experimental Investigation on Reinforced Ultra-High-Performance Fiber-Reinforced Concrete Composite Beams Subjected to Combined Bending and Shear,” ACI Structural Journal, V. 110, No. 2, Mar.-Apr. 2013, pp. 251-261.
10. Paschalis, S. A.; Lampropoulos, A. P.; and Tsioulou, O., “Experimental and Numerical Study of the Performance of Ultra High Performance Fiber Reinforced Concrete for the Flexural Strengthening of Full Scale Reinforced Concrete Members,” Construction and Building Materials, V. 186, 2018, pp. 351-366. doi: 10.1016/j.conbuildmat.2018.07.123
11. Meda, A.; Mostosi, S.; and Riva, P., “Shear Strengthening of Reinforced Concrete Beam with High-Performance Fiber-Reinforced Cementitious Composite Jacketing,” ACI Structural Journal, V. 111, No. 5, Sept.-Oct. 2014, pp. 1059-1068. doi: 10.14359/51686807
12. Massicotte, B.; Dagenais, M.-A.; and Lagier, F., “Performance of UHPFR Jackets for the Seismic Strengthening of Bridge Piers,” RILEM-fib-AFGC International Symposium on Ultra-High Performance Fibre-Reinforced Concrete, UHPFRC 2013, Marseille, France, 2013.
13. Garneau, J.-F., “Réhabilitation Sismique des Piles-Murs de Pont Rectangulaires par Chemisage en Béton Fibré à Ultra-Haute Performance,” Université de Montréal, Montréal, QC, Canada, 2015.
14. Beschi, C.; Meda, A.; and Riva, P., “Column and Joint Retrofitting with High Performance Fiber Reinforced Concrete Jacketing,” Journal of Earthquake Engineering, V. 15, No. 7, 2011, pp. 989-1014. doi: 10.1080/13632469.2011.552167
15. Meda, A.; Mostosi, S.; Rinaldi, Z.; and Riva, P., “Corroded RC Columns Repair and Strengthening with High Performance Fiber Reinforced Concrete Jacket,” Materials and Structures/Materiaux et Constructions, V. 49, No. 5, 2016, pp. 1967-1978.
16. Adriano, R.; Morbi, A.; and Plizzari, G. A., “Seismic Retrofitting of a Bridge Pier with Ultra High Performance Fibre Reinforced Concrete,” MATEC Web of Conferences, V. 199, 2018.
17. NF P 18-470, “Ultra-High Performance Fibre-Reinforced Concrete: Specifications, Performance, Production and Conformity,” Association Francaise de Normalisation, Paris, France, 2016.
18. NF P 18-710, “National Addition to Eurocode 2: Design of Concrete Structures: Specific Rules for Ultra-High Performance Fibre-Reinforced Concrete (UHPFRC),” Association Francaise de Normalisation, Paris, France, 2016.
19. Choi, M. S.; Kang, S. T.; Lee, B. Y.; Koh, K.-T.; and Ryu, G.-S., “Improvement in Predicting the Post-Cracking Tensile Behavior of Ultra-High Performance Cementitious Composites Based on Fiber Orientation Distribution,” Materials (Basel), V. 9, No. 10, 2016, p. 829. doi: 10.3390/ma9100829
20. Wille, K.; Tue, N. V.; and Parra-Montesinos, G. J., “Fiber Distribution and Orientation in UHP-FRC Beams and Their Effect on Backward Analysis,” Materials and Structures/Materiaux et Constructions, V. 47, No. 11, 2014, pp. 1825-1838.
21. Yoo, D. Y.; Kang, S. T.; and Yoon, Y. S., , “Effect of Fiber Length and Placement Method on Flexural Behavior, Tension-Softening Curve, and Fiber Distribution Characteristics of UHPFRC,” Construction and Building Materials, V. 64, 2014, pp. 67-81. doi: 10.1016/j.conbuildmat.2014.04.007
22. Maya Duque, L. F., and Graybeal, B. “Fiber Orientation Distribution and Tensile Mechanical Response in UHPFRC,” Materials and Structures/Materiaux et Constructions, V. 50, No. 1, 2017, pp. 1-17.
23. Mihaylov, B. I.; Hannewald, P.; and Beyer, K., “Three-Parameter Kinematic Theory for Shear-Dominated Reinforced Concrete Walls,” Journal of Structural Engineering, ASCE, V. 142, No. 7, 2016, pp. 1-14. doi: 10.1061/(ASCE)ST.1943-541X.0001489
24. Tatar, N., and Mihaylov, B., “Kinematic-Based Modeling of Shear-Dominated Concrete Walls with Rectangular and Barbell Sections,” Journal of Earthquake Engineering, V. 25, No. 7, 2021, pp. 1408-1437. doi: 10.1080/13632469.2019.1577764