PSI - Issue 11
Francesca Giulia Carozzi et al. / Procedia Structural Integrity 11 (2018) 355–362 F.G. Carozzi et al. / Structural Integrity Procedia 00 (2018) 000 – 000
362
8
The reinforcement materials were very efficient since the maximum load reached on the unreinforced panel was increased by 3.5 and 4 times by the contribution of G-TRM and cG-TRM systems respectively. After the end of the elastic phase the reinforced structures were able to further increase the load and, in the case of cG-TRM, to carry a high load constant for larger displacement values. The panel reinforced with G-TRM-NSM reached a maximum load equal to 1.7 times the un-reinforced one. The panel presents a different behavior in the two sides due to the different reinforcement systems applied. The side strengthened with the NSM presents a lower stiffness and failed due to the diagonal cracking. In this paper only the experimental results are described, in future works these results will be compared with analytical and numerical models in order to validate these data and elaborate an analytical procedure that could be useful to define design guide lines for the strengthening with TRM systems.
Acknowledgements
T.C.S. s.r.l. is gratefully acknowledged by the authors for providing support for the experimental in-situ investigation and for the strengthening material. These tests were performed with the contribution of the Testing Laboratory for Materials, Structures and Constructions of Politecnico di Milano, the support of the technicians Antonio Cocco and Paolo Broglia is gratefully acknowledged
References
Almeida J.A.P.P, Pereira E.B., Barros J.A.O. 2015. Assessment of overlay masonry strengthening system under in-plane monotonic and cyclic loading using the diagonal tensile test. Construction and Building Materials 94, 841-865 ASTM E 519-10 Standard Test Method for Diagonal Tension (Shear) in Masonry Assemblages Babaeidarabad S., Arboleda D., Loreto G., Nanni A., 2014. Shear strengthening of un-reinforced concrete masonry walls with fabric-renforced cementitious-matrix. Construction and Building Materials 65, 243-253 Borri A., Castori G., Corradi M., Speranzini E. 2011. Shear behavior of unreinforced and reinforced masonry panels subjected to in situ diagonal compression tests. Construction and Building Materials 25, 4403-4414 Carozzi F.G., Poggi C., 2015. Mechanical properties and debonding strength of Fabric Reinfoced Cementitious Matrix (FRCM) systems for masonry strengthening. Composites Part B 70, 215-230 Carozzi F.G.., Poggi C., Bertolesi E., Milani G., 2018. Ancient masonry arches and vaults strengthened with TRM, SRG and FRP composites: Experimental evaluation. Composites Structures 187, 466-480 Contamine R., Si Larbi, A., Hamelin P., 2011. Contribution to direct tensile testing of textile reinforced concrete (TRC) composites. Materials Science and Engineering 528, 8589-8598 D’Amb risi A., Mezzi M. Feo L., Berardi V.P. 2014. Analysis of masonry structures strengthened with polymeric net reinforced cementitious matrix materials. Composite Structures 113, 264-271 D’Antino T., Carloni C., Sneed L.H., Pellegrino C. 2014. Matrix – fiber bond behavior in PBO FRCM composites: A fracture mechanics approach. Engineering Fracture Mechanics 114, 94-111 De Santis S., de Felice G. 2015. Steel reinforced grout systems for the strengthening of masonry structures. Composite Structures 134, 533-548 EN 1015-11. Methods of test for mortar for masonry – determination of flexural and compressive strenght of hardened mortar; 1999. EN 13412 Products and systems for the protection and repair of concrete structures - Test methods - Determination of modulus of elasticity in compression Marcari G., Basisi M., Vestroni F. 2017. Experimental investigation of tuff masonry panels reinforced with surface bonded basalt textile-reinforced mortar. Compoiste Part B 108, 131-142 Menna C., Asprone D., Durante M., Zinno A., Balsamo A., Prota A. 2015. Structural behavior of masonry panels strengthened with an innovative hemp fibre composite grid. Construction and Building materials 100, 111-121 Parisi F. Iovinella I., Balasamo A., Augenti N., Prota A. 2013. In-plane behavior of tuff masonry strengthened with inorganic matrix-grid composites. Composites Part B 45, 1657-1665 Peled, A., Zaguri E., Marom G., 2008. Bonding characteristics of multifilament polymer yarns and cement matrices. Composites Part A 39, 930 939 Prota A., Marcacri G., FAbbrocino G., Manfredi G. Aldea C. 2006. Experimental In-Plane Behavior of Tuff Masonry Strengthened with Cementitious Matrix – Grid Composites. Journal of Composite for Construction 10, 223-233
Made with FlippingBook Annual report maker