On Mechanical Behavior of Metal Anchors in Historical Brick Masonry: Testing and Analytical Validation

The repair and strengthening of historical masonry buildings is a fundamental aspect in the conservation built cultural heritage. Temporary shoring or are often used and, usually, involve introduction new metallic elements. connection between original substrate elements must be analyzed carefully to prevent further damage building. This paper presents study on mechanical behavior metal anchors applied brick walls. An experimental campaign developed, series pull-out tests carried out walls laboratory with natural hydraulic lime mortar low strength bricks. Two groups conducted, namely, actuator direction anchor axis inclined respect fastener axis. Moreover, two types anchoring systems used, adhesive (chemical cementitious grout) anchors. results compared predictive analytical formulas available literature for estimation ultimate load capacity, according type failure. From comparison values, it proven that formulation originally developed concrete substrates cannot directly extrapolated cases, specific should developed. presented research can select most efficient system retrofitting structures.