Abstract
The aim of this study was to compare the effects of strengthening masonry arches using two different composite materials. To this end, an experimental analysis was carried out on models of arches that were first damaged, then strengthened by applying composite material sheets to the surface of the intrados, and last, subjected to a loading process until the point of collapse. One arch was strengthened with carbon fiber-reinforced polymer, the other with glass fiber-reinforced cement matrix. Results collected during the experimental analysis were significant in assessing the capability to support horizontal load, in increasing the collapse load, stiffness, and ductility, and in assessing the different fracture patterns and collapse modes of the arches strengthened with different fiber-reinforced composites. The comparison will be useful for establishing the physical-mechanical and aesthetic compatibilities between the original construction and the strengthening matrix polymeric or cementitious, particularly with reference to the safeguarding of historical buildings.
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