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In this paper the pull-off test results on CFRP laminates bonded to masonry units on stiff and flexible adhesives are presented. The flexible polymer adhesive was matched to repair the brick specimens with delaminated CFRP strips bonded on epoxy adhesive, which failed in the Single-Lap test. The same test was applied for the research on the specimens repaired with the polymer adhesive. The results demonstrate that the flexible adhesive is more effective than the stiff one because of stress concentractions reduction and stress distribution equality along the bond length and higher fracture energy.
Czasopismo
Rocznik
Tom
Strony
228--239
Opis fizyczny
Bibliogr. 30 poz., rys., tab., wykr.
Twórcy
autor
- Cracow University of Technology, Faculty of Civil Engineering, 24 Warszawska Street, 30-155 Kraków, Poland
Bibliografia
- [1] G. Celestini, P. Casadei, Innovation on advanced composite materials for strengthening and protection of historical masonry structures, in: Proceedings of the MuRiCo3 Conference, Venezia, 2009.
- [2] T. Trapko, M. Musiał, The effectiveness of CFRP materials strengthening of eccentrically compressed reinforced concrete columns, Archives of Civil and Mechanical Engineering XI (1) (2011) 249–262.
- [3] M.R. Valluzzi, Strengthening of masonry structures with fibre reinforced plastics: from modern conception to historical building preservation, in: D. D’Ayala and E. Fodde (Eds.), Structural Analysis of Historic Construction, CRC Press, London, 2008, pp. 33–45.
- [4] A. Borri, M. Corradi, A. Barbieri, A. Di Tommaso, Dynamic behaviour of masonry vaults repaired with FRP: experimental analysis, in: Proceedings of the Sixth International Masonry Conference, The British Masonry Society, London, 2002.
- [5] P. Foraboschi, Strength assessment of masonry arch retrofitted using composite reinforcements, Masonry International 15 (1) (2001) 17–25.
- [6] J. Jasieńko, Ł. Bednarz, The analysis of state of strains and stresses of strengthened brick vaults, in: D. D’Ayala and E. Fodde (Eds.), Structural Analysis of Historic Construction, CRC Press, London, 2008, pp. 357–366.
- [7] J. Jasieńko, Ł. Bednarz, T. Nowak, The effectiveness of strengthening historic brick vaults by contemporary methods, in: F.M. Mazzolani (Ed.), Protection of Historical Buildings, PROHI-TECH’09, Taylor and Francis Group, Rome, 2009, pp. 1299–1304.
- [8] M.R. Valluzzi, C. Modena, Experimental analysis and modelling of masonry vaults strengthened by FRP, in: Proceedings of the Third International Seminar of Structural Analysis of Historical Constructions, Guimaraes, 2001.
- [9] G. Croci, A. Viskovic, L’uso degli FRP di fibra aramidica per il rinforzo della Basilica di San Francesco di Assisi, in: Proceedings of Mechanics of Masonry Structures Strengthened with FRP Materials, Venezia, 2000.
- [10] K. Flaga, A. Kwiecień, Efficiency of CFRP strengthening of arches tested by failure of historical building after the inappropriate repair intervention, Advanced Materials Research 133–134 (2010) 837–842.
- [11] M. Accardi, L. La Mendola, Stress transfer at the interface of bonded joints between FRP and calcarenite natural stone, in: Proceedings of Fourth International Seminar on Structural Analysis of Historical Constructions, Padua, 2004.
- [12] U.S. Camili, B. Binici, Strength of carbon reinforced polymers bonded to concrete and masonry, Construction and Building Materials 21 (2007) 1431–1446.
- [13] M.R. Valluzzi, D. Tinazzi, C. Modena, Shear behaviour of masonry panels strengthened by FRP laminates, Construction and Building Materials 16 (2002) 409–416.
- [14] M.A. Aiello, M.F. Sciolti, T.C. Triantafillou, FRP-strengthened masonry: bond aspect, in: Proceedings of the FRPRCS-8 Symposium, No. 18-1, Patras, 2007.
- [15] C. Modena, Design approaches of investigations for the safety and conservation of historic buildings, in: Proceedings of the Fourth International Seminar on Structural Analysis of Historical Constructions, Padua, 2004.
- [16] A. Kwiecień, Polymer flexible joint an innovative repair system protecting cracked masonries against stress concentrations, in: F.M. Mazzolani (Ed.), Protection of Historical Buildings, PROHI-TECH’09, Taylor and Francis Group, Rome, 2009, pp. 1033–1038.
- [17] M.R. Valluzzi, et al., Round Robin Test for Composite-To-Brick Shear Bond Characterization, Materials and Structures, submitted for publication.
- [18] L. Binda, G. Cardani, A. Saisi, A classification of structures and masonries for the adequate choice of repair, in: Proceedings of the International RILEM Workshop on Repair for Historic Masonry, Delft, 2005.
- [19] W. Derkowski, A. Kwiecień, B. Zając, Comparison of CFRP strengthening efficiency of bent RC elements using stiff and flexible adhesives, in: Proceedings of the 3rd FIB International Congress, Washington, 2010.
- [20] J. Kubica, A. Kwiecień, B. Zając, Repair and strengthening by use of superficial fixed laminates of cracked masonry walls sheared horizontally laboratory tests, in: Proceedings of the Seismic Engineering International Conference MERCEA’08, Villa San Giovanni Reggio Calabria, 2008.
- [21] M.D. Fitton, J.G. Broughton, Variable modulus adhesives: an approach to optimized joint performance, International Journal of Adhesion and Adhesives 25 (2005) 329–336.
- [22] A. Kwiecień, B. Zając, R. Jankowski, Static and dynamic properties of a flexible joint working in cracked historical masonries, in: D. D’Ayala and E. Fodde (Eds.), Structural Analysis of Historic Construction, CRC Press, London, 2008, pp. 931–939.
- [23] A. Kwiecień, Pull-off tests of stiff and flexible adhesives bonding CFRP laminates to masonry substrates, in: Proceedings of the AMCM’2011 Conference, Cracow, 2011.
- [24] S.M. Darwish, A. Al-Samhan, Design rationale of weld-bonded joint, International Journal of Adhesion and Adhesives 24 (2004) 367–377.
- [25] A. Tounsi, S. Benyoucef, Interfacial stress in externally FRP-plated concrete beams, International Journal of Adhesion and Adhesives 27 (2007) 207–215.
- [26] H. Yuan, J.G. Teng, Z.S. Wu, J. Yao, Full-range behaviour of FRP-to-concrete bonded joints, Engineering Structures 26 (2004) 553–565.
- [27] H.N. Garden, R.J. Quantrill, L.C. Hollaway, A.M. Thorne, G.A.R. Parke, An experimental study of the anchorage length of carbon fiber composite plates used to strengthen reinforced concrete beams, Construction and Building Materials 12 (1998) 203–219.
- [28] M. Al-Emrani, R. Kliger, Analysis of interfacial shear stress in beams strengthened with bonded prestressed laminates, Composites: Part B 37 (2006) 265–272.
- [29] E. Bonaldo, J.A.O. Barros, P.J.B. Lourenco, Bond characterization between concrete substrate and repairing SFRC using pull-off testing, Int, Journal of Adhesion and Adhesives 25 (2005) 463–474.
- [30] M. Panizza, E. Garbin, M.R. Valluzzi, C. Modena, Bond Behaviour of CFRP and GFRP laminates on brick masonry, in: D. D’Ayala and E. Fodde (Eds.), Structural Analysis of Historic Construction, CRC Press, London, 2008, pp. 763–770.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-d2f57f62-17a8-4f73-b2d1-aead241ae643