Experimental and Numerical Evaluation of Concentrically Loaded RC Columns Strengthening by Textile Reinforced Concrete Jacketing
Nowadays, Textile Reinforced Concrete (TRC) has become a very popular strengthening technique for concrete structures. This paper presents an investigation on the applicability of TRC for strengthening reinforced concrete column. Both experimental and numerical studies are conducted to evaluate the confinement effects of various TRC strengthening schemes. The experimental study is performed on a series of six reinforced concrete square columns tested to failure. Two of them were un-strengthened as references, the other four were strengthened by one or two layers of Carbon Textile Reinforced Concrete (CTRC). The results indicated that the application of carbon TRC enhanced the ductility and ultimate strength of the specimens. Failure of all strengthened columns was together with tensile rupture of textile reinforcements at the corners of column. Finite element models of the CTRC strengthened columns based on ATENA software package were developed and verified with the experimental results. The analytical results show that in the specimen corner areas, textile reinforcements are subjected to a 3D complicated stress state and this may be the cause of their premature failure.
Ortlepp, Regine, Andy Lorenz, and Manfred Curbach. “Column Strengthening with TRC: Influences of the Column Geometry onto the Confinement Effect.” Advances in Materials Science and Engineering 2009 (2009): 1–5. doi:10.1155/2009/493097.
Triantafillou, Thanasis C., Catherine G. Papanicolaou, Panagiotis Zissimopoulos, and Thanasis Laourdekis. "Concrete confinement with textile-reinforced mortar jackets." ACI Materials Journal 103, no. 1 (2006): 28-37.
Ortlepp R. “Increased efficiency of column strengthening with TRC by addition of short fibres in the fine-grained concrete matrix.” Conference: High Performance Fiber Reinforced Cement Composites (HPFRCC), at Stuttgart, Vol. 7 (June 2015).
Bamdad, Mahdi, Abdolreza Sarvghad Moghadam, and Mohammad Javad Mehrani. “Finite Element Analysis of Load Bearing Capacity of a Reinforced Concrete Frame Subjected to Cyclic Loading.” Civil Engineering Journal 2, no. 5 (May 30, 2016): 221–225. doi:10.28991/cej-2016-00000028.
De Caso y Basalo, Francisco J., Fabio Matta, and Antonio Nanni. “Fiber Reinforced Cement-Based Composite System for Concrete Confinement.” Construction and Building Materials 32 (July 2012): 55–65. doi:10.1016/j.conbuildmat.2010.12.063.
Trapko, Tomasz, and Michał Musiał. “Effect of PBO–FRCM Reinforcement on Stiffness of Eccentrically Compressed Reinforced Concrete Columns.” Materials 13, no. 5 (March 9, 2020): 1221. doi:10.3390/ma13051221.
Colajanni, Piero, Fabrizio De Domenico, Antonino Recupero, and Nino Spinella. “Concrete Columns Confined with Fibre Reinforced Cementitious Mortars: Experimentation and Modelling.” Construction and Building Materials 52 (February 2014): 375–384. doi:10.1016/j.conbuildmat.2013.11.048.
Donnini, Jacopo, Simone Spagnuolo, and Valeria Corinaldesi. “A Comparison between the Use of FRP, FRCM and HPM for Concrete Confinement.” Composites Part B: Engineering 160 (March 2019): 586–594. doi:10.1016/j.compositesb.2018.12.111.
Colajanni, Piero, Marinella Fossetti, and Giuseppe Macaluso. “Effects of Confinement Level, Cross-Section Shape and Corner Radius on the Cyclic Behavior of CFRCM Confined Concrete Columns.” Construction and Building Materials 55 (March 2014): 379–389. doi:10.1016/j.conbuildmat.2014.01.035.
ACI Committee. “ACI 549.4R-13: Guide to Design and Construction of Externally Bonded Fabric-Reinforced Cementitious Matrix (FRCM) Systems for Repair and Strengthening Concrete and Masonry Structures.” American Concrete Institute (2013).
Bournas, Dionysios A., Panagiota V. Lontou, Catherine G. Papanicolaou, and Thanasis C. Triantafillou. "Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns." ACI Structural Journal 104, no. 6 (2007): 740-748.
RILEM Technical Committee 232-TDT “Recommendation of RILEM TC 232-TDT: test methods and design of textile reinforced concrete.” (May 2016).
Zulassung Z-31.10-182. “Gegenstand: Verfahren zur Verstärkung von Stahlbeton mit TUDALIT (Textilbewehrter Beton).” Prüfstelle: DIBt, Antragsteller: TUDAG TU Dresden Aktiengesellschaft (2015).
RILEM Technical Committee 250-CSM “Recommendation of RILEM TC 250-CSM: Test method for Textile Reinforced Mortar to substrate bond characterization.” (July 2018).
Ortlepp, R., Lorenz, A. and Curbach, M., Umschnürungswirkung textilbewehrter Verstärkungen im Lasteinleitungsbereich von Stützen in Abhängigkeit von der Geometrie. Beton‐ und Stahlbetonbau, 106: 490-500, 2011.
Cervenka V., Jendele L. and Cervenka J. “ATENA computational program for nonlinear finite element analysis of reinforced concrete structures.” Program Documentation, Prague, (2004).
Vassilis K. P. and Andreas J. K. “Modelling confinement in concrete columns and bridge piers through 3D nonlinear finite element analysis.” fib Symposium “Keep Concrete Attractive”, Budapest (2005).
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