Seismic Retrofit of RC Short Columns with Textile-Reinforced Alkali-Activated or Cement-Based Mortars
Source abstract
Abstract
The effectiveness of textile-reinforced mortars (TRM) utilized as jacketing overlays that are applied to short, shear-critical reinforced concrete (RC) columns was investigated experimentally and verified analytically in this study. Moreover, the possibility of replacing the standard ordinary portland cement (OPC) matrix with an alternative alkali-activated material (AAM) in the TRM retrofitting technique was explored. Seven rectangular-shaped RC columns were constructed with a shear span-to-height ratio of 1.5. Four of the seven specimens were constructed to be more ductile with closely spaced shear reinforcement, and the rest had their stirrups positioned at larger spacings. Both series of columns were retrofitted with two and four layers of TRM jacket overlays, which were made from uncoated carbon textiles and AAM or OPC-based mortar. They were subjected to cyclic loading combined with a constant vertical load. The control (unretrofitted) specimens exhibited brittle failure, and the retrofitted specimens performed significantly better for deformation capacity, with a clear shift in the failure mode toward shear–flexure. The load capacity of the jacketed columns was governed by yielding in the longitudinal reinforcement. An important result is that AAM-based TRM jacketing is not inferior to its OPC-based counterpart.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Masonry and Concrete Structural Analysis · Innovative concrete reinforcement materials · Structural Behavior of Reinforced Concrete
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Ph.D. Candidate, Univ. of Patras, Patras GR-26504, Greece (corresponding author). ORCID: .
Professor, Univ. of Patras, Patras GR-26504, Greece. ORCID: .
References (39)
Show source-provided references
1. ACI (American Concrete Institute). 2016. Masonry and concrete strengthening using fabric-reinforced cementitious matrix (FRCM) and steel reinforced grout (SRG) composite systems. AC434. ICC Evaluation Services. Los Angeles: ACI.
2. Aïtcin, P. C. 2000. “Cements of yesterday and today: Concrete of tomorrow.” Cem. Concr. Res. 30 (9): 1349–1359. https://doi.org/10.1016/S0008-8846(00)00365-3.10.1016/S0008-8846(00)00365-3 ↗
3. Askouni, P. D., C. C. G. Papanicolaou, and L. Azdejkovic. 2021. “Experimental investigation of the TRM-to-masonry bond after exposure to elevated temperatures: Cementitious and alkali-activated matrices of various densities.” Materials 15 (1): 140. https://doi.org/10.3390/ma15010140.10.3390/ma15010140 ↗
4. Bedirhanoglu, I., A. Ilki, and T. C. Triantafillou. 2022. “Seismic behavior of repaired and externally FRP-jacketed short columns built with extremely low-strength concrete.” J. Compos. Constr. 26 (1): 04021068. https://doi.org/10.1061/(ASCE)CC.1943-5614.0001179.10.1061/(ASCE)CC.1943-5614.0001179 ↗
5. Biskinis, D. E., G. K. Roupakias, and M. N. Fardis. 2004. “Degradation of shear strength of reinforced concrete members with inelastic cyclic displacements.” Struct. J. 101 (6): 773–783.
6. Blaber, J., B. Adair, and A. Antoniou. 2015. “Ncorr: Open-source 2D digital image correlation matlab software.” Exp. Mech. 55 (6): 1105–1122. https://doi.org/10.1007/s11340-015-0009-1.10.1007/s11340-015-0009-1 ↗
7. Bournas, D. A., P. V. Lontou, C. G. Papanicolaou, and T. C. Triantafillou. 2007. “Textile-reinforced mortar versus fiber-reinforced polymer confinement in reinforced concrete columns.” ACI Struct. J. 104 (6): 740.
8. CEN (European Committee for Standardization). 2002. Testing hardened concrete - part 3: Compressive strength of test specimens. EN 12390-3. Brussels, Belgium: CEN.
9. CEN (European Committee for Standardization). 2016. Methods of testing cement - Part 1: Determination of strength. EN196-1. Brussels, Belgium: CEN.
10. Colomb, F., H. Tobbi, E. Ferrier, and P. Hamelin. 2008. “Seismic retrofit of reinforced concrete short columns by CFRP materials.” Compos. Struct. 82 (4): 475–487. https://doi.org/10.1016/j.compstruct.2007.01.028.10.1016/j.compstruct.2007.01.028 ↗
11. Davidovits, J. 1991. “Geopolymers: Inorganic polymeric new materials.” J. Therm. Anal. Calorim. 37 (8): 1633–1656. https://doi.org/10.1007/BF01912193.10.1007/BF01912193 ↗
12. Del Zoppo, M., M. Di Ludovico, A. Balsamo, A. Prota, and G. Manfredi. 2017. “FRP for seismic strengthening of shear controlled RC columns: Experience from earthquakes and experimental analysis.” Composites, Part B 129: 47–57. https://doi.org/10.1016/j.compositesb.2017.07.028.10.1016/j.compositesb.2017.07.028 ↗
13. FEMA (Federal Emergency Management Agency). 2007. Interim testing protocols for determining the seismic performance characteristics of structural and nonstructural components. FEMA461. Washington, DC: FEMA.
14. FIB. 2013. Fib model code 2010 for concrete structures. Berlin: Ernst & Sohn.10.1002/9783433604090 ↗
15. Galal, K., A. Arafa, and A. Ghobarah. 2005. “Retrofit of RC square short columns.” Eng. Struct. 27 (5): 801–813. https://doi.org/10.1016/j.engstruct.2005.01.003.10.1016/j.engstruct.2005.01.003 ↗
16. Gkournelos, P. D., L. D. Azdejković, and T. C. Triantafillou. 2022. “Innovative and eco-friendly solutions for the seismic retrofitting of natural stone masonry walls with textile reinforced mortar: In-and out-of-plane behavior.” J. Compos. Constr. 26 (1): 04021061. https://doi.org/10.1061/(ASCE)CC.1943-5614.0001173.10.1061/(ASCE)CC.1943-5614.0001173 ↗
17. Haroun, M. A., A. S. Mosallam, M. Q. Feng, and H. M. Elsanadedy. 2003. “Experimental investigation of seismic repair and retrofit of bridge columns by composite jackets.” J. Reinf. Plast. Compos. 22 (14): 1243–1268. https://doi.org/10.1177/0731684403035573.10.1177/0731684403035573 ↗
18. Hosseini, S. M., D. Mostofinejad, A. Saljoughian, and B. Nader Tehrani. 2020. “Seismic retrofit of square RC short columns with shear-flexural failure mode via CFRP composites using different confinement techniques.” J. Compos. Constr. 24 (4): 04020029. https://doi.org/10.1061/(ASCE)CC.1943-5614.0001037.10.1061/(ASCE)CC.1943-5614.0001037 ↗
19. ISO. 2010. Steel for the reinforcement and prestressing of concrete—Test methods—Part 1: Reinforcing bars, wire rod and wire. ISO 15630-1. Geneva: ISO.
20. ISO (International Organization for Standardization). 2013. Textiles - Tensile properties of fabrics – Part 1: Determination of maximum force and elongation at maximum force using the strip method. ISO 13934-1. Geneva: ISO.
21. Kam, W. Y., and S. Pampanin. 2011. “The seismic performance of RC buildings in the 22 February 2011 Christchurch earthquake.” Struct. Concr. 12 (4): 223–233. https://doi.org/10.1002/suco.201100044.10.1002/suco.201100044 ↗
22. Lehman, D. E., and J. P. Moehle. 2000. Seismic performance of well-confined concrete bridge columns. PEER 1998/01. Berkeley, CA: Pacific Earthquake Engineering Research Center.
23. Li, Y. A., Y. T. Huang, and S. J. Hwang. 2014. “Seismic response of reinforced concrete short columns failed in shear.” ACI Struct. J. 111 (4): 945.
24. Menna, C., D. Asprone, M. Durante, A. Zinno, A. Balsamo, and A. Prota. 2015. “Structural behaviour of masonry panels strengthened with an innovative hemp fibre composite grid.” Constr. Build. Mater. 100: 111–121. https://doi.org/10.1016/j.conbuildmat.2015.09.051.10.1016/j.conbuildmat.2015.09.051 ↗
25. Menna, C., D. Asprone, C. Ferone, F. Colangelo, A. Balsamo, A. Prota, R. Cioffi, and G. Manfredi. 2013. “Use of geopolymers for composite external reinforcement of RC members.” Composites, Part B 45 (1): 1667–1676. https://doi.org/10.1016/j.compositesb.2012.09.019.10.1016/j.compositesb.2012.09.019 ↗
26. Montejo, L. A., M. J. Kowalsky, and T. Hassan. 2009. “Seismic behavior of shear-dominated reinforced concrete columns at low temperatures.” ACI Struct. J. 106 (4): 445–454.
27. Moretti, M. L., and T. P. Tassios. 2006. “Behavior and ductility of reinforced concrete short columns using global truss model.” ACI Struct. J. 103 (3): 319.
28. Priestley, M. N., F. Seible, and G. M. Calvi. 1996. Seismic design and retrofit of bridges. Hoboken, NJ: Wiley.10.1002/9780470172858 ↗
29. 10.1617/s11527-013-0211-510.1617/s11527-013-0211-5 ↗
30. Ricci, P., F. De Luca, and G. M. Verderame. 2011. “6th April 2009 L’Aquila earthquake, Italy: Reinforced concrete building performance.” Bull. Earthquake Eng. 9 (1): 285–305. https://doi.org/10.1007/s10518-010-9204-8.10.1007/s10518-010-9204-8 ↗
31. Sheikh, S. A., and S. M. Uzumeri. 1980. “Strength and ductility of tied concrete columns.” J. Struct. Div. 106 (5): 1079–1102. https://doi.org/10.1061/JSDEAG.0005416.10.1061/JSDEAG.0005416 ↗
32. Sozen, M. A., and J. P. Moehle. 1993. Stiffness of reinforced concrete walls resisting in-plane shear. No. EPRI-TR-102731-TIER-1. Washington, DC: Electric Power Research Inst.
33. Tamburini, S., M. Natali, E. Garbin, M. Panizza, M. Favaro, and M. R. Valluzzi. 2017. “Geopolymer matrix for fibre reinforced composites aimed at strengthening masonry structures.” Constr. Build. Mater. 141: 542–552. https://doi.org/10.1016/j.conbuildmat.2017.03.017.10.1016/j.conbuildmat.2017.03.017 ↗
34. Triantafillou, T. C., C. G. Papanicolaou, P. Zissimopoulos, and T. Laourdekis. 2006. “Concrete confinement with textile-reinforced mortar jackets.” ACI Struct. J. 103 (1): 28.
35. Umehara, H., and J. Jirsa. 1982. Shear strength and deterioration of short reinforced concrete columns under biaxial bending shear. PMFSEL Rep. No. 82-3. Austin, TX: Univ. of Texas.
36. Vecchio, F. J., and M. P. Collins. 1986. “The modified compression-field theory for reinforced concrete elements subjected to shear.” ACI J. 83 (2): 219–231.
37. Vecchio, F. J., and M. P. Collins. 1994. “Compression response of cracked reinforced concrete.” J. Struct. Eng. 120 (5): 1683–1683. https://doi.org/10.1061/(ASCE)0733-9445(1993)119:12(3590).
38. Xiao, Y., H. Wu, and G. R. Martin. 1999. “Prefabricated composite jacketing of RC columns for enhanced shear strength.” J. Struct. Eng. 125 (3): 255–264. https://doi.org/10.1061/(ASCE)0733-9445(1999)125:3(255).10.1061/(ASCE)0733-9445(1999)125:3(255) ↗
39. Zhang, H. Y., H. Y. Liu, V. Kodur, M. Y. Li, and Y. Zhou. 2022. “Flexural behavior of concrete slabs strengthened with textile reinforced geopolymer mortar.” Compos. Struct. 284: 115220. https://doi.org/10.1016/j.compstruct.2022.115220.10.1016/j.compstruct.2022.115220 ↗