Confinement of Masonry Columns with PBO and Basalt FRCM Composites

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A new generation of composite materials in the form of Fiber Reinforced Cementitious Matrix (FRCM) was recently used to strengthen the masonry structures. Six small scale masonry columns were tested under monotonic concentric load until collapse; three columns were confined with PBO (short of polyparafenilenbenzobisoxazole)-FRCM jackets, two with basalt–FRCM jackets while an unconfined column was used as a control specimen. The masonry columns investigated have a rectangular cross section 250x250 mm among the overall length equal to 770 mm, and the corners were rounded to a radius of 20 mm. The analysis was conducted varying the confinement ratio i.e. the number of fabric layers for each FRCM system. Obtained results allow evidencing the effectiveness of the confinement and the effect n-layer on the structural response of the masonry columns.

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392-397

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August 2019

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© 2019 Trans Tech Publications Ltd. All Rights Reserved

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[1] A. Nanni, FRCM strengthening a new tool in the concrete and masonry repair toolbox, Conc. Int. Des. Constr.,34(4), (2000) 43-49.

Google Scholar

[2] T. Triantafillou, Textile-Reinforced Mortars (TRM) versus Fibre-Reinforcxed Polymers (FRP) as strengthening and seismic retrofitting materials for reinforced concrete and masonry structures, Int. Conf. Adv. Comp. In Constr., ACIC07, (2007).

DOI: 10.1007/978-0-85729-166-0_5

Google Scholar

[3] G. de Felice, S. De Santis; L. Garmendia, B. Ghiassi; P. Larrinaga, P.B. Lourenco, D.V Oliveira, F. Paolacci, C.G Papanicolau, Mortar-based system for externally bonded strengthening of masonry, Mat. and Struct., 47(12), (2014), 2021-2037.

DOI: 10.1617/s11527-014-0360-1

Google Scholar

[4] RILEM Technical Committee 250, Guide to Design and Construction of Externally Bonded Fabric-Reinforced Mortar (FRM) Systems for Repair and Strengthening Masonry Structures, (2018).

Google Scholar

[5] L.H. Sneed, C. Carloni, G. Baietti, G. Fraioli, Confinement of clay masonry columns with SRG, Key Eng. Mat., 747, (2017), 350-357.

DOI: 10.4028/www.scientific.net/kem.747.350

Google Scholar

[6] L. Ombres, S. Verre, Masonry columns strengthened with Steel Fabric Reinforced Cementitious Matrix (S-FRCM) jackets: experimental and numerical analysis, Meas. J., (2018), 238-245.

DOI: 10.1016/j.measurement.2018.05.114

Google Scholar

[7] UNI EN 772-1, Methods of test for masonry units - Part 1: Determination of compressive strength, (2015).

Google Scholar

[8] UNI EN 12190:2000. Product and system for the protection and repair concrete structures – Test methods – Determination of compressive strength of repair mortar.

DOI: 10.3403/01552488u

Google Scholar

[9] EN 1015-11. Methods of test for mortar for masonry Part 11: Determination of flexural and compressive strength of hardened mortar, (2006).

DOI: 10.3403/01905442u

Google Scholar