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Seismic strengthening of brick masonry by composite coatings : an experimental studyGams, Matija, gradbeništvo ; Tomaževič, Miha ; Berset, ThierryIn this paper an extensive experimental study is presented in which the efficiency of seismic strengthening of brick masonry walls, typical in Slovenia and wider region, is analyzed. The results of ... cyclic shear tests of 24 walls are presented. The walls were strengthened using different materials and different layouts of the reinforcement. Externally bonded glass and carbon composites were used for strengthening and were applied to the wall by either cementitious mortar or epoxy resin. 12 walls were first tested up to the point where repair was still feasible and then strengthened and retested until collapse to study the efficiency of repair/strengthening. The rest were strengthened in the undamaged state. In addition to cyclic shear tests, the tests of the composite-masonry bond in double shear lap configuration were also performed. Results of cyclic shear tests show significant differences between different types of strengthening with shear strength resistance improvements of up to 130%. The displacement capacity was barely increased, except for one type of strengthening, thus confirming the importance of correct strengthening layout and anchoring. The observed failure mechanisms were characterized by debonding of coating which resulted in sudden resistance and stiffness degradation, leading to brittle collapse of the walls. The performance of composite-to-masonry bond in double shear lap test was significantly better than in cyclic shear tests. Finally, the resistance of strengthened walls is estimated using simple numerical models based on measured bond strength.Source: Bulletin of earthquake engineering. - ISSN 1570-761X (Apr. 2017, str. 1-30)Type of material - article, component part ; adult, seriousPublish date - 2017Language - englishCOBISS.SI-ID - 2292327
Author
Gams, Matija, gradbeništvo |
Tomaževič, Miha |
Berset, Thierry
Topics
opečni zid |
utrjevanje |
oblaganje |
mreža iz steklenih vlaken |
tkanina iz steklenih/karbonskih vlaken |
potresni odziv |
brick masonry |
strengthening |
coating |
glass fiber grid |
glass/carbon fiber fabric |
seismic behaviour
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Database name | Field | Year |
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Links to authors' personal bibliographies | Links to information on researchers in the SICRIS system |
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Gams, Matija, gradbeništvo | 24339 |
Tomaževič, Miha | 00654 |
Berset, Thierry | ![]() |
Source: Personal bibliographies
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