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http://dx.doi.org/10.12989/sem.2019.72.6.723

Rehabilitation and strengthening of exterior RC beam-column connections using epoxy resin injection and FRP sheet wrapping: Experimental study  

Marthong, Comingstarful (Department of Civil Engineering, National Institute of Technology Meghalaya)
Publication Information
Structural Engineering and Mechanics / v.72, no.6, 2019 , pp. 723-736 More about this Journal
Abstract
The efficacy of a technique for the rehabilitation and strengthening of RC beam-column connections damaged due to cyclic loading was investigated. The repair mainly uses epoxy resin infused under pressure into the damaged region to retrieved back the lost capacity and then strengthening using fiber reinforced polymer (FRP) sheets for capacity enhancement. Three common types of reduced scale RC exterior beam-column connections namely (a) beam-column connection with beam weak in flexure (BWF) (b) beam-column connections with beam weak in shear (BWS) and (c) beam-column connections with column weak in shear (CWS) subjected to reversed cyclic loading were considered for the experimental investigation. The rehabilitated and strengthened specimens were also subjected to similar cyclic displacement. Important parameters related to seismic capacity such as strength, stiffness degradation, energy dissipation, and ductility were evaluated. The rehabilitated connections exhibited equal or better performance and hence the adopted rehabilitation strategies could be considered as satisfactory. Confinement of damaged region using FRP sheet significantly enhanced the seismic capacity of the connections.
Keywords
Beam-column connections; Rehabilitation; Strengthening; Epoxy resin; FRP; Seismic capacity; Damage assessment;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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1 Ascione, F. Lamberti, M. Razaqpur, A.G and Spadea, S. (2017), "Strength and stiffness of adhesively bonded GFRP beamcolumn moment resisting connections", Compos. Struct., 60, 1248-1257. https://doi.org/10.1016/j.compstruct.2016.11.021.
2 Barbhuiya, S. and Choudhury, A.M. (2015), "A study on the size effect of RC beam-column connections under cyclic loading", Eng. Struct., 95, 1-7. https://doi.org/10.1016/j.engstruct.2015.03.052.   DOI
3 Choudhury, A.M., Deb, S.K. and Dutta, A. (2013), "Study on size effect of fibre reinforced polymer retrofitted reinforced concrete beam-column connections under cyclic loading", Canadian J. Civil Eng., 40(4), 353-360. https://doi.org/10.1139/cjce-2012-0041.   DOI
4 Karayannis, C.G., and Sirkelis, G.M. (2002), "Effectiveness of RC beam-column connection strengthening using Carbon-FRP Jackets", 12th European Conference on Earthquake Engineering, London, September.
5 Marthong, C., Dutta, A. and Deb, S.K. (2013), "Seismic rehabilitation of RC exterior beam-column connections using epoxy resin injection", J. Earthq. Eng., 17(3), 378-398. https://doi.org/10.1080/13632469.2012.738284.   DOI
6 Marthong, C., Dutta, A. and Deb, S.K. (2016), "Effect of Cyclic Loading Frequency on the Behavior of External RC Beam-Column Connections", J. Earthq. Eng., 20, 1126-1147. https://doi.org/10.1080/13632469.2016.1138164.   DOI
7 Mosallam, A.S. (2000), "Strength and ductility of reinforced concrete moment frame connections strengthened with quasi- Isotropic laminates", Compos. Part B Eng., 31(6-7), 481-497. https://doi.org/10.1016/S1359-8368(99)00068-2.   DOI
8 Mukherjee, A. and Joshi, M. (2005), "FRPC reinforced concrete beam-column joints under cyclic excitation", Compos. Struct., 70, 185-199. https://doi.org/10.1016/j.compstruct.2004.08.022.   DOI
9 Naeim, F. and Kelly, J.M. (1999), Design of Seismic Isolated Structures from Theory to Practice", Wiley, New Jersey, USA.
10 Panda K.C., Bhattacharyya S.K. and Barai S.V. (2013), "Shear strengthening effect by bonded GFRP strips and transverse steel on RC T-beams", Struct. Eng. Mech., 4(1), 75-98. http://dx.doi.org/10.12989/sem.2013.47.1.075.
11 Park, Y.J. and Ang, A.H.S. (1985), "Mechanistic seismic damage model for reinforced concrete", ASCE, 111(4), 722-739. https://doi.org/10.1061/(ASCE)0733-9445(1985)111:4(722).   DOI
12 Saleh, H.A., Al-Salloum, A.Y., Almusallam, T.H. and Nadeem, A.S. (2010), "Seismic response of FRP-upgraded exterior beamcolumn joints", J. Compos. Construct., 14(2), 195-208. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000067.   DOI
13 Federal Emergency Management Agency (FEMA) (1998), Repair of Earthquake Damaged Concrete and Masonry Wall Buildings, FEMA, USA. 24-42.
14 Corazao, M. and Durrani, A. J. (1989), "Repair and strengthening of beam-to-column connections subjected to earthquake loading", NCEER-89-0013, National Center for Earthquake Engineering Research, State University of New York at Buffalo, NY, USA.
15 Engindeniz, M. Kahn, L. F. and Zureick, A. (2005), "Repair and strengthening of reinforced concrete beam-column joints: State of the art" ACI Struct. J.,102(2), 187-197. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000290.
16 Eslami, A. and Ronagh, H.R. (2014), "Experimental investigation of an appropriate anchorage system for flange-bonded carbon fiber-reinforced polymers in retrofitted RC beam-column joints", J. Compos. Construct., 18(4), 1-11. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000456.
17 Ghobarah, A. and Said, A. (2002), "Shear strengthening of beamcolumn joints", Eng. Struct., 24(7), 881-888. https://doi.org/10.1016/S0141-0296(02)00026-3.   DOI
18 IS 10262 (2009), Guidelines for Concrete Mix Design Proportioning (CED 2: Cement and Concrete), Bureau of Indian Standard New Delhi, India.
19 Ghobarah, A. Aziz, A. and Biddah, T. S. (1997), "Rehabilitation of reinforced concrete frame connections using corrugated steel jacketing", ACI Struct. J., 4(3), 283-294.
20 Hadi, M.N.S. and Tran, T.M. (2016), "Seismic rehabilitation of reinforced concrete beam-column joints by bonding with concrete covers and wrapping with FRP composite", Mater. Struct., 49(1-2), 467-485. https://doi.org/10.1617/s11527-014-0511-4.   DOI
21 IS 12269 (1087), Specification for OPC-53 Grade Cement, Bureau of Indian Standard, New Delhi, India.
22 IS 13920 (2016), Ductile Detailing of Reinforced Concrete Structures Subjected to Seismic Forces - Code of Practice, Bureau of Indian Standard New Delhi, India.
23 Tsonos, A.G. (2014), "An innovative solution for strengthening of old R/C structures and for improving the FRP strengthening method", Struct. Monitor. Maintenance, 1(3), 323-338. http://dx.doi.org/10.12989/smm.2014.1.3.323.   DOI
24 Sasmal, S., Ramanjaneyulu, K., Balthasar, N. Srinivas, V., Kumar, K.S., Korkowski, C., Roehm, C., Lakshmanan, N. and Iyer, N.R. (2010), "Seismic retrofitting of non ductile beam-column subassemblage using FRP wrapping and steel plate jacketing", J. Construct. Build. Mater., 25(1), 175-182. https://doi.org/10.1016/j.conbuildmat.2010.06.041.
25 Shannag, M.J. and Alhassan, M.A. (2005), "Seismic upgrade of interior beam-column sub-assemblages with high performance fiber reinforced concrete jackets", ACI Struct. J., 102(1), 131-138.
26 Tsonos, A.G. (2008), "Effectiveness of CFRP-Jackets and RCJackets in Post-earthquake and Pre-earthquake Retrofitting of Beam-Column Sub-assemblages", Eng. Struct., 30, 777-793. https://doi.org/10.1016/j.engstruct.2007.05.008.   DOI
27 IS 2386a (1993), Methods of Test for Aggregates for Concrete - Part 1: Particle Size and Shape, Bureau of Indian Standard, New Delhi, India.
28 Uma, S.R. and Jain, S.K. (2006), "Seismic design of beam-column joints in RC moment resisting frames - Review of codes", Struct. Eng. Mech., 23(5), 579-597. https://doi.org/10.12989/sem.2006.23.5.579.   DOI
29 Vidjeapriya, R. and Jaya, K.P. (2013), "Experimental study on two simple mechanical precast beam-column connections under reverse cyclic loading", J. Performance Construct. Facilities, 27(4), 402-414. https://doi.org/10.1061/(ASCE)CF.1943-5509.0000324.   DOI
30 William, M.S. and Sexsmith, R.G. (1995), "Seismic damage indices for concrete structures: A state-of-the-art review", Earthq. Spectra, 11(2), 319-349. https://doi.org/10.1193/1.1585817.   DOI
31 IS 2386b (1963), Methods of Test for Aggregates for Concrete - Part 3: Specific gravity, Density, Voids, Absorption and Bulking, Bureau of Indian Standard, New Delhi, India.
32 IS 432 (1) (1982), Specification for Mild Steel and Medium Tensile Steel Bars and Hard-Drawn Steel Wire for Concrete Reinforcement: Part I Mild Steel and Medium Tensile Steel Bars, Bureau of Indian Standard New Delhi, India.
33 Karayannis, C.G, Chalioris, C. E, and Sirkelis, G. M. (2008), "Local retrofit of exterior RC beam-column joints using thin RC jackets-An experimental study", Earthq. Eng. Struct. Dynam., 37, 727-746. https://doi.org/10.1002/eqe.783.   DOI
34 IS 456 (2000), Plain and Reinforced Concrete - Code of Practice, Bureau of Indian Standard New Delhi, India.
35 Kakaletsis, D.J., David, K.N. and Karayannis, C.G. (2011), "Effectiveness of some conventional seismic retrofitting techniques for bare and infilled R/C frame", J. Struct. Eng. Mech., 39(4), 499-520. https://doi.org/10.12989/sem.2011.39.4.499.   DOI
36 Karayannis, (2015), "Mechanics of external RC beam-column joints with rectangular spiral shear reinforcement: experimental verification", J. Mechanica, 50(3), 311-322. https://doi.org/10.1007/s11012-014-9953-6.   DOI
37 Karayannis, C.G. and Sirkelis, G.M. (2008), "Strengthening and rehabilitation of RC beam-column joints using C-FRP jacketing and epoxy resin injection", J. Earthq. Eng. Struct. Dynam., 37, 769-790. https://doi.org/10.1002/eqe.785.   DOI
38 IS 1608 (1995), Mechanical Testing of Metals - Tensile Testing, Bureau of Indian Standard New Delhi, India.
39 Karayannis, C.G. Chalioris, C.E. and Sideris, K.K. (1998), "Effectiveness of RC beam-column connection repair using epoxy resin injections", J. Earthq. Eng., 2(2), 217-240.   DOI
40 ACI 352R-02 (2002), Recommendations for Design of Beam-Column Connections in Monolithic Reinforced Concrete Structures, American Concrete Institute, Farmington Hills, MI, USA.
41 ACI Committee 440.2R (2002), "Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Concrete Structures", American Concrete Institute, Farmington Hills, MI, USA.
42 Alsayed, S.H., Al-Salloum, Y.A., Almusallam, T.H., and Siddiqui, N. A. (2010), "Seismic response of FRP-upgraded exterior RC beam-column joints", J. Compos. Construct. ASCE, 14(2), 195-208. https://doi.org/10.1061/(ASCE)CC.1943-5614.0000067.   DOI