In-Plane Shear Strength Improvement of Hollow Concrete Masonry Panels Using a Fabric-Reinforced Cementitious Matrix
Publication: Journal of Composites for Construction
Volume 22, Issue 2
Abstract
An overview of an experimental program investigating the effectiveness of fabric-reinforced cementitious matrix (FRCM) to limit the damage in shear critical unreinforced hollow concrete masonry assemblages is presented. The experimental program involved the mechanical testing of the constituent materials and the diagonal shear testing of 16 masonry panels constructed to replicate the masonry types prevalent in nonductile reinforced concrete frames with masonry infill buildings. The test variables investigated included the masonry type, the FRCM fabric material, and the number of FRCM layers. Three FRCM fabrics (basalt, glass, and carbon) and two masonry types (200 and 150 mm thick) were used. The FRCM strengthening changed the failure mode from brittle bed joint sliding to a more gradual distributed diagonal cracking and/or toe crushing, with a shear strength increase of 104–258% for 150-mm thick masonry panels and 69–156% for 200-mm thick masonry panels. A substantial increase in the ductility and energy dissipation capacity was also noted for the FRCM-strengthened masonry panels. The shear stress-strain behavior, deformation capacity, pseudoductility, energy dissipation, and stiffness characteristics were analyzed and discussed. The behavior of the FRCM-strengthened panels was predicted using analytical equations, and the predicted values were compared to the experimental results.
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Acknowledgments
Financial support for this study was provided by the United Arab Emirates University under the research Grant No. G00001603. The authors would like to thank Engr. Tarek and Mr. Faisal for their help and support during testing.
References
ACI (American Concrete Institute). (2013). “Guide to design and construction of externally bonded fabric-reinforced cementitious matrix (FRCM) systems for repair and strengthening concrete and masonry structures.” ACI 549.4R, Farmington Hills, MI.
Almeida, J. A., Pereira, E. B., and Barros, J. A. (2015). “Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test.” Constr. Build. Mater., 94, 851–865.
ASTM. (2011). “Standard test methods for cyclic (reversed) load test for shear resistance of vertical elements of the lateral force resisting systems for buildings.” ASTM E2126, West Conshohocken, PA.
ASTM. (2015). “Standard test method for diagonal tension (shear) in masonry assemblages.” ASTM E519/E519M, West Conshohocken, PA.
ASTM. (2016a). “Standard test method for compressive strength of hydraulic cement mortars (using 2-in. or 50-mm cube specimens).” ASTM C109, West Conshohocken, PA.
ASTM. (2016b). “Standard test method for compressive strength of masonry prisms.” ASTM C1314, West Conshohocken, PA.
Awani, O., El Maaddawy, T., and Ismail, N. (2017). “Fabric-reinforced cementitious matrix: A promising strengthening technique for concrete structures.” Constr. Build. Mater., 132, 94–111.
Babaeidarabad, S., Arboleda, D., Loreto, G., and Nanni, A. (2014). “Shear strengthening of un-reinforced concrete masonry walls with fabric-reinforced-cementitious-matrix.” Constr. Build. Mater., 65, 243–253.
Babaeidarabad, S., Caso, F., and Nanni, A. (2013a). “Out-of-plane behavior of URM walls strengthened with fabric-reinforced cementitious matrix composite.” J. Compos. Mater., 04013057.
Babaeidarabad, S., De Caso, F., and Nanni, A. (2013b). “URM walls strengthened with fabric-reinforced cementitious matrix composite subjected to diagonal compression.” J. Compos. Constr., 04013045.
Bernat-Maso, E., Escrig, C., Aranha, C. A., and Gil, L. (2014). “Experimental assessment of textile reinforced sprayed mortar strengthening system for brickwork wallettes.” Constr. Build. Mater., 50, 226–236.
Carozzi, F. G., and Poggi, C. (2015). “Mechanical properties and debonding strength of fabric reinforced cementitious matrix (FRCM) systems for masonry strengthening.” Composites Part B, 70, 215–230.
CEN (European Committee for Standardization). (2004). “Eurocode 6: Design of masonry structures. 1-1: Common rules for reinforced and unreinforced masonry structures.” ENV 1996-1-1:2004, Brussels, Belgium.
Da Porto, F., Guidi, G., Verlato, N., and Modena, C. (2015). “Effectiveness of plasters and textile reinforced mortars for strengthening clay masonry infill walls subjected to combined in-plane/out-of-plane actions.” Mauerwerk, 19(5), 334–354.
Dizhur, D., Dhakal, R. P., Bothara, J., and Ingham, J. (2016). “Building typologies and failure modes observed in the 2015 Gorkha (Nepal) earthquake.” Bull. N. Z. Soc. Earthquake Eng., 49(2), 211–231.
Dizhur, D., Griffith, M., and Ingham, J. (2013). “In-plane shear improvement of unreinforced masonry wall panels using NSM CFRP strips.” J. Compos. Constr., 04013010.
Faella, C., Martinelli, E., Nigro, E., and Paciello, S. (2010). “Shear capacity of masonry walls externally strengthened by a cement-based composite material: An experimental campaign.” Constr. Build. Mater., 24(1), 84–93.
Gattesco, N., and Boem, I. (2015). “Experimental and analytical study to evaluate the effectiveness of an in-plane reinforcement for masonry walls using GFRP meshes.” Constr. Build. Mater., 88, 94–104.
Haddad, M. A., Shaheen, E., Parsekian, G. A., Tilleman, D., and Shrive, N. G. (2010). “Strengthening of a concrete masonry wall subject to lateral load with sprayed glass-fibre-reinforced polymer.” Can. J. Civ. Eng., 37(10), 1315–1330.
Harajli, M., ElKhatib, H., and San-Jose, J. (2010). “Static and cyclic out-of-plane response of masonry walls strengthened using textile-mortar system.” J. Mater. Civ. Eng., 1171–1180.
Ismail, N., and Ingham, J. M. (2014). “Polymer textiles as a retrofit material for masonry walls.” Struct. Build., 167(1), 15–25.
Ismail, N., and Ingham, J. M. (2016). “In-plane and out-of-plane testing of unreinforced masonry walls strengthened using polymer textile reinforced mortar.” Eng. Struct., 118, 167–177.
Ismail, N., and Khattak, N. (2016). “Building typologies prevalent in northern Pakistan and their performance during the 2015 Hindu Kush earthquake.” Earthquake Spectra, 32(4), 2473–2493.
Ismail, N., Petersen, R. B., Masia, M. J., and Ingham, J. M. (2011). “Diagonal shear behaviour of unreinforced masonry wallettes strengthened using twisted steel bars.” Constr. Build. Mater., 25(12), 4386–4393.
Kolsch, H. (1998). “Carbon fiber cement matrix (CFCM) overlay system for masonry strengthening.” J. Compos. Constr., 105–109.
Koutas, L., Bousias, S., and Triantafillou, T. (2014a). “Seismic strengthening of masonry-infilled RC frames with TRM: Experimental study.” J. Compos. Constr., 04014048.
Koutas, L., Triantafillou, T., and Bousias, S. (2014b). “Analytical modeling of masonry-infilled RC frames retrofitted with textile-reinforced mortar.” J. Compos. Constr., 264–271.
Li, T., Galati, N., Tumialan, J. G., and Nanni, A. (2005). “Analysis of unreinforced masonry concrete walls strengthened with glass fiber-reinforced polymer bars.” ACI Struct. J., 102(4), 569–577.
MSJC (Masonry Standards Joint Committee). (2011). “Building code requirements and specification for masonry structures.” TMS 402-11, Longmont, CO.
Papanicolaou, C., Triantafillou, T. C., and Lekka, M. (2011). “Externally bonded grids as strengthening and seismic retrofitting materials of masonry panels.” Constr. Build. Mater., 25(2), 504–514.
Papanicolaou, C. G., Triantafillou, T. C., Papathanasiou, M., and Karlos, K. (2007). “Textile reinforced mortar (TRM) versus FRP as strengthening material of URM walls: Out-of-plane cyclic loading.” Mater. Struct., 41(1), 143–157.
Parisi, F., Iovinella, I., Balsamo, A., Augenti, N., and Prota, A. (2013). “In-plane behaviour of tuff masonry strengthened with inorganic matrix-grid composites.” Compos. Part B: Eng., 45(1), 1657–1666.
Priestley, M., and Paulay, T. (1992). Seismic design of reinforced concrete and masonry buildings, Wiley, New York.
Prota, A., Marcari, G., Fabbrocino, G., Manfredi, G., and Aldea, C. (2006). “Experimental in-plane behavior of tuff masonry strengthened with cementitious matrix-grid composites.” J. Compos. Constr., 223–233.
Sagar, S. L., Singhal, V., Rai, D. C., and Gudur, P. (2017). “Diagonal shear and out-of-plane flexural strength of fabric-reinforced cementitious matrix-strengthened masonry walletes.” J. Compos. Constr., 04017016.
Silva, P. F., Yu, P., and Nanni, A. (2008). “Monte Carlo simulation of shear capacity of URM walls retrofitted by polyurea reinforced GFRP grids.” J. Compos. Constr., 405–415.
Tetta, Z. C., and Bournas, D. A. (2016). “TRM vs FRP jacketing in shear strengthening of concrete members subjected to high temperatures.” Compos. Part B: Eng., 106, 190–205.
Tumialan, J. G., Morbin, A., Nanni, A., and Modena, C. (2001). “Shear strengthening of masonry walls with FRP composites.” Composites 2001 Convention and Trade Show, Composites Fabricators Association, Tampa, FL.
Turco, V., Secondin, S., Morbin, A., Valluzzi, M. R., and Modena, C. (2006). “Flexural and shear strengthening of un-reinforced masonry with FRP bars.” Compos. Sci. Technol., 66(2), 289–296.
Valluzzi, M. R., Da Porto, F., Garbin, E., and Panizza, M. (2014). “Out-of-plane behaviour of infill masonry panels strengthened with composite materials.” Mater. Struct., 47(12), 2131–2145.
Yardim, Y., and Lalaj, O. (2016). “Shear strengthening of unreinforced masonry wall with different fiber reinforced mortar jacketing.” Constr. Build. Mater., 102, 149.
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Published In
Journal of Composites for Construction
Volume 22 • Issue 2 • April 2018
Copyright
©2018 American Society of Civil Engineers.
History
Received: Jan 6, 2017
Accepted: Oct 5, 2017
Published online: Feb 14, 2018
Published in print: Apr 1, 2018
Discussion open until: Jul 14, 2018
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