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Mechanical behaviour of FRP-confined masonry by testing of full-scale columns

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Abstract

The vulnerability of masonry constructions under seismic forces, or more generally under the mechanical actions during the centuries, has been highlighted in the last years by several events that caused the loss of significant heritage buildings. Faced with this difficulty, the use of composite materials, fiber reinforced polymers (FRP) may be a solution for mitigating the vulnerability of masonry buildings. This solution has been tested in the laboratory by researchers in the last decade. In particular, studies regarding elements such as walls, arches and vaults, strengthened with FRP materials are available. A few numbers of studies are known for columns, which have been tested only as small or middle scale samples. The current state of the art does not report studies on FRP-confined masonry columns tested in real scale. The research presents the results of an experimental program performed on full-scale masonry columns strengthened with different composite systems. The same kind of study had been previously performed by the authors on medium scale masonry columns, using the same materials for both the masonry core and for the FRP system. Prismatic columns with a square cross section were subjected to compression tests according to the following test schemes: two control unconfined columns; column with continuous wrapping by using unidirectional glass FRP (GFRP) sheets; column with discontinuous wrapping by using GFRP unidirectional sheets; column with continuous GFRP wrapping and internal carbon FRP bars bonded in the transverse directions; column wrapped with continuous alkali resistant GFRP grid and steel spikes bonded together in lime based matrix. The experimental results are presented and discussed in the paper along with the comparison with the results obtained from the experimental tests on medium scale specimens. The comparison between experimental data and theoretical predictions provided by the analytical model found in the guidelines of the CNR technical document is also illustrated.

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References

  1. fib TG 9.6 (2001) Externally bonded FRP reinforcement for RC structures. Technical report 138

  2. ACI TC 400 (2002) Design and construction of externally bonded FRP systems for strengthening concrete structures—ACI 440.2R.02, 45

  3. Japan Society of Civil Engineers (JSCE) (2001) Recommendations for upgrading of concrete structures with use of continuous fiber sheets. In: Maruyama K (ed) Concrete engineering series 41

  4. CNR-DT 200 R1 (2012) Guide for the design and construction of externally bonded FRP systems for strengthening existing structures. Italian Council of Research (CNR), Rome, pp 1–167

    Google Scholar 

  5. Samaan M, Mirmiran A, Shahawy M (1998) Model of concrete confined with fiber composites. ASCE—J Struct Eng 124(9):1025–1031

    Article  Google Scholar 

  6. Spoelstra MJ, Monti G (1999) FRP-confined concrete model. ASCE-J Compos Constr 3(3):143–150

    Article  Google Scholar 

  7. Toutanji HA (1999) Stress–strain characteristics of concrete columns externally confined with advanced fiber composites sheets. ACI Mater J 96(3):397–404

    Google Scholar 

  8. Lam L, Teng JG (2002) Strength models for fiber-reinforced plastic confined concrete. J Struct Eng ASCE 128(5):612–623

    Article  Google Scholar 

  9. De Lorenzis L, Tepfers R (2003) Comparative study of models on confinement of concrete cylinders with fiber-reinforced polymer composites. ASCE-J Compos Constr 7(3):219–237

    Article  Google Scholar 

  10. Deniaud C, Neale KW (2006) An assessment of constitutive models for concrete columns confined with fibre composite sheets. Compos Struct 73(3):318–330

    Article  Google Scholar 

  11. Di Ludovico M, Prota A, Manfredi G (2010) Structural upgrade using basalt fibers for concrete confinement. ASCE J Compos Constr 14(5):541–552 (ISSN: 1090-0268)

  12. Di Ludovico M, D’Ambra C, Prota A, Manfredi G (2010) FRP confinement of tuff and clay brick columns: experimental study and assessment of analytical models. ASCE—J Compos Constr 14(5):583–596

    Article  Google Scholar 

  13. Shrive NG, Masia MJ, Lissel SL (2001) Strengthening and rehabilitation of masonry using fibre reinforced polymers. In: Proceedings of the 3rd international seminar on historical constructions, Guimarães, Portugal, pp 1047–1056

  14. Masia MJ, Shrive NG (2003) CFRP wrapping for the rehabilitation of masonry columns. Can J Civ Eng 30(4):734–744

    Article  Google Scholar 

  15. Micelli F, De Lorenzis L, La Tegola A (2004) FRP-confined masonry columns under axial loads: analytical model and experimental results. Br Masonry Soc—Masonry Int 17:3:95–108

  16. Micelli F, De Lorenzis L, Galati N, La Tegola A (2001) Confinement of natural block masonry columns using fibre reinforced polymer rebars and laminates. In: Proceedings of the 9th Canadian masonry symposium, Fredericton, Canada, 4–6 June 2001

  17. Micelli F, De Lorenzis L, La Tegola A, (2003) Confinement of masonry columns with FRP bars. In: Proceedings of Composites in Construction CCC2003 International Conference, Cosenza, Italy, 16–19 Sept 2003, pp 373–378

  18. Faella C, Martinelli E, Paciello S, Nigro E (2004) Experimental tests and theoretical models on tuff masonry bricks and columns confined with C-FRP sheets, vol. 2. In: Proceedings of IMTCR04 international conference, Lecce, Italy, 6–9 June, pp 343–359

  19. Barbi L, Briccoli Bati S, Ranocchiai G (2004) Experimental analysis of brickwork specimens confined with CFRP composites. In: Proceedings of the 2nd national symposium on mechanics of masonry structures strengthened with FRP materials, 2004, Venice, Italy, pp 217–225

  20. Borri A, Grazini A, (2004) Masonry columns strengthening with FRP materials. In: Proceedings of the 2nd national symposium on mechanics of masonry structures strengthened with FRP materials, 2004, Venice, Italy, pp 193–202

  21. Shaheen E, Shrive NG (2005) Sprayed glass fibre reinforced polymer (SGFRP) masonry columns under concentric and eccentric loading. Can J Civ Eng 34(11):1495–1505

    Article  Google Scholar 

  22. Shaheen E, Shrive NG (2005) Strengthening of masonry columns with sprayed glass fibre reinforced polymers (SGFRP). In: Proceedings of the 10th Canadian masonry symposium, Banff, Alberta, Canada, pp 873–882

  23. Aiello MA, Micelli F, Valente L (2005) Circular masonry columns confined with FRP. In: Proceedings of composites in construction CCC2005, 3rd International Conference, Lyon, France, 11–13 July 2005, pp 485–492

  24. Aiello MA, Micelli F, Valente L (2007) Structural upgrading of masonry columns by using composite reinforcements. ASCE J Compos Constr 11(6):650–658

    Article  Google Scholar 

  25. Krevaikas TD, Triantafillou T (2006) Masonry confinement with fiber-reinforced polymers. ASCE J Compos Constr 9(2):128–135

    Article  Google Scholar 

  26. Shrive NG (2006) The use of fibre reinforced polymers to improve seismic resistance of masonry. Constr Build Mater 20(4):269–277

    Article  Google Scholar 

  27. Corradi M, Grazini A, Borri A (2007) Confinement of brick masonry columns with CFRP materials. Compos Sci Technol 67:1772–1783

    Article  Google Scholar 

  28. Aiello MA, Micelli F, Valente L (2009) FRP-confinement of square masonry columns. ASCE J Compos Constr 13(2):148–158

    Article  Google Scholar 

  29. Faella C, Martinelli E, Paciello S, Camorani G, Aiello MA, Micelli F, Nigro E (2011) Masonry columns confined by composite materials: experimental investigation. Composites: Part B 42(4):692–704

    Article  Google Scholar 

  30. Faella C, Martinelli E, Paciello S, Camorani G, Aiello MA, Micelli F, Nigro E (2011) Masonry columns confined by composite materials: design formulae. Composites: Part B 42(4):705–716

    Article  Google Scholar 

  31. Ente Nazionale Italiano di Unificazione, European Committee for Standardization (2002) Tests guidelines for masonry members—compressive strength. UNI EN 772-1, Milan

  32. Ente Nazionale Italiano di Unificazione, European Committee for Standardization (2004) Specification for mortar for masonry—masonry mortar. UNI EN 998-2, Milan

  33. ASTM (2000) Standard test method for tensile properties of polymer matrix composite materials. D3039/D3039M, West Conshohocken

  34. CNR-DT 203 (2006) Guide for the design and construction of concrete structures reinforced with fiber-reinforced polymer bars. Italian Council of Research (CNR), Rome, pp 1–35

    Google Scholar 

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Acknowledgments

This study was performed in the framework of PE 2010–2013; joint program DPC-ReLUIS. The materials used for strengthening the specimens discussed in this paper have been provided by Mapei, Spa, Milan.

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Authors and Affiliations

  1. Department of Innovation Engineering, University of Salento, via per Monteroni, 73100, Lecce, Italy

    F. Micelli

  2. Department of Structures for Engineering and Architecture, University of Naples Federico II, via Claudio 21, 80125, Naples, Italy

    M. Di Ludovico, A. Balsamo & G. Manfredi

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  1. F. Micelli
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  2. M. Di Ludovico
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  3. A. Balsamo
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  4. G. Manfredi
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Correspondence to M. Di Ludovico.

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Micelli, F., Di Ludovico, M., Balsamo, A. et al. Mechanical behaviour of FRP-confined masonry by testing of full-scale columns. Mater Struct 47, 2081–2100 (2014). https://doi.org/10.1617/s11527-014-0357-9

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