Is it possible to repair detached composites effectively after failure of masonry strengthening? / Arkadiusz Kwiecień, Bogusław Zając // W: Mechanics of Masonry Structures Strengthened with Composite ... więcej

Is it possible to repair detached composites effectively after failure of masonry strengthening? / Arkadiusz Kwiecień, Bogusław Zając // W: Mechanics of Masonry Structures Strengthened with Composite Materials : selected, peer reviewed papers from the 4th International Seminar on Mechanics of Masonry Structures Strengthened with Composite Materials (MuRiCo4 2014), September 9-11, 2014, Ravenna, Italy / ed. by A. Di Tommaso, C. Gentilini, G. Castellazzi. – Pfaffikon : Trans Tech Publications Ltd, 2015. – (Key Engineering Materials, ISSN 1013-9826 ; 624). – S. 518-525 : il. – Bibliogr. 10 poz., Abstr. – doi: 10.4028/www.scientific.net/KEM.624.518. – ISBN 978-3-03835-203-7

Strengthening of masonry structures using various externally bonded composite materials have been developed in the last decade. De-bonding of the FRP strengthening system from masonry, caused by an earthquake, ... więcej

Strengthening of masonry structures using various externally bonded composite materials have been developed in the last decade. De-bonding of the FRP strengthening system from masonry, caused by an earthquake, has to be repaired quickly to protect the weakened structure against demolition during an aftershock. In this case the new rapid bonding methods, allowing for ductile behavior and reducing stress concentrations in the weakened masonry substrate, are missing. These rules fulfill highly deformable adhesives, made of flexible polyurethane polymers. In the paper, the results of Single Lap Shear Tests are presented, carried out on the specimens made of weak bricks strengthened using GFRP, BFRP, CFRP and SRP strips. They are compared with results obtained on the same specimens but repaired after failure using stiff epoxy adhesive and highly deformable polyurethane adhesive. Comparison of the obtained ultimate loads in damage tests and failure modes allowed determining efficiency of the tested repair methods.