Abstract
The paper presents the results of a broad experimental investigation conducted through diagonal compression tests on masonry specimens strengthened with a mortar coating applied on both surfaces of the wall and reinforced with a glass fiber reinforced polymer (GFRP) mesh. Four types of masonry, three different types of masonry mortar and five diverse GFRP meshes for the reinforcement were considered. In particular, solid brick masonry 250 and 380 mm thick, two-leaf brick masonry with rubble conglomerate infill and rubble stone masonry were tested. The diagonal compression tests, performed on 60 square masonry specimens with loading-unloading cycles up to the collapse, evidenced a good effectiveness of the strengthening technique in terms of both resistance and ductility. Results also showed the resistance increment in reinforced samples is generally greater for weaker masonry types and, referring to a single masonry type, for specimens built with a weaker mortar. Furthermore, the different GFRP meshes influenced very little the resistance of specimens, but higher reinforcement contents induced a lower decrease of the diagonal load after the cracking.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Aiello MA, Micelli F, Valente L (2007) Masonry confinement by using composite reinforcement, In: Proceedings of the 4th International Conference on Conceptual Approach to Structural Desing, June 28–29, Venice
Brignola S, Frumento S, Lagomarsino S, Podestà S (2009) Identification of shear parameters of masonry panels through the in-situ diagonal compression test. Int J Archit Herit 3(2):52–73
Carozzi FG, Milani G, Poggi C (2014) Mechanical properties and numerical modeling of Fabric Reinforced Cementitious Matrix (FRCM) systems for strengthening of masonry structures. Compos Struct 107:711–725
Corradi M, Borri A, Vignoli A (2008) Experimental evaluation of the in-plane shear behaviour of masonry walls retrofitted using conventional and innovative methods. J Br Mason Soc 21(1):29–42
D’Ambrisi A, Mezzi M, Caporale A (2013) Experimental investigation on polymeric net-RCM reinforced masonry panels. Compos Struct 105:207–215
D’Ambrisi A, Focacci F, Caporale A (2013) Strengthening of masonry-unreinforced concrete railway bridges with PBO-FRCM materials. Compos Struct 102:193–204
Frocht MM (1931) Recent advances in photoelasticity. ASME Trans 55:135–153
Gattesco N, Macorini L (2014) In-plane stiffening techniques with nail plates or CFRP strips for timber floors in historical masonry buildings. Constr Build Mater 58:64–76
Gattesco N, Dudine A (2010) Effectiveness of a masonry strengthening technique made with a GFRP-mesh-reinforced mortar coating. In: Proceedings of the 8th international masonry conference, Dresden, July 5–9
Juhásová E, Sofronie R, Bairrão R (2008) Stone masonry in historical buildings—Ways to increase their resistance and durability. Eng Struct 30(8):2194–2205
Papanicolaou C, Triantafillou T, Lekka M (2011) Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels. Constr Build Mater 25(2):504–514
RILEM TC 76-LUM (1994) Diagonal tensile strength tests of small wall specimens. In: RILEM recommendations for testing and use of contructions materials. E&EN SPON, London, pp 488–489
Tomazevic M, Sheppard P (1982) The strengthening of stone-masonry buildings for revitalizing in seismic regions. In: Proceedings of the 7th European conference on earthquake engineering, Athens, September 6–11
Tomazevic M, Apih V (1993) The strengthening of stone masonry walls by injecting the masonry-friendly grouts. Eur Earthq Eng 7(2):10–20
Tomazevic M, Lutman M, Weiss P (1994) Influence of floors and connection of walls on seismic resistance of old brick masonry buildings. Institute for testing and research in materials and structures, ZAG, Ljubijana
Triantafillou TC (1998) Strengthening of masonry structures using epoxy-bonded FRP laminates. J Compos Constr 2(2):96–104
Valluzzi MR, Tinazzi D, Modena C (2002) Shear behavior of masonry panels strengthened by FRP laminates. Constr Build Mater 16(7):409–416
Yokel FY, Fattal SG (1976) Failure hypothesis for masonry shear walls. J Struct Div ASCE 10(ST3):515–532
Acknowledgments
This paper is based on part of the results of a research project financed by the composite engineering factory FibreNet s.r.l., Pavia di Udine, Italy. The useful help provided by Dr. Andrea Cernigoi, technician of the Laboratory of Testing Materials, University of Trieste, during the execution of tests is gratefully acknowledged.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Gattesco, N., Boem, I. & Dudine, A. Diagonal compression tests on masonry walls strengthened with a GFRP mesh reinforced mortar coating. Bull Earthquake Eng 13, 1703–1726 (2015). https://doi.org/10.1007/s10518-014-9684-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10518-014-9684-z