Mechanical characterization of particular masonry panels in Tuscany
S Boschi, C Bernardini, A Borghini… - Proceedings of the …, 2016 - api.taylorfrancis.com
S Boschi, C Bernardini, A Borghini, A Ciavattone, E Del Monte, S Giordano, A Vignoli…
Proceedings of the XVI International Brick and Block Masonry …, 2016•api.taylorfrancis.comThe knowledge of masonries' mechanical parameters is an essential requirement for a
reliable structural assessment on existing masonry buildings. Table C8 A. 2.1 (Circ.
617/2009, Italian Code) provides average values of mechanical characteristics for 11
masonry categories typical of existing structures. In certain cases, they are not sufficient to
cover specific masonry types individuated in regional context. In this paper, the results of
experimental tests performed on particular masonry panels “out-of-Code” taken from bearing …
reliable structural assessment on existing masonry buildings. Table C8 A. 2.1 (Circ.
617/2009, Italian Code) provides average values of mechanical characteristics for 11
masonry categories typical of existing structures. In certain cases, they are not sufficient to
cover specific masonry types individuated in regional context. In this paper, the results of
experimental tests performed on particular masonry panels “out-of-Code” taken from bearing …
Abstract
The knowledge of masonries’ mechanical parameters is an essential requirement for a reliable structural assessment on existing masonry buildings. Table C8 A. 2.1 (Circ. 617/2009, Italian Code) provides average values of mechanical characteristics for 11 masonry categories typical of existing structures. In certain cases, they are not sufficient to cover specific masonry types individuated in regional context. In this paper, the results of experimental tests performed on particular masonry panels “out-of-Code” taken from bearing walls realized with hollow brick blocks or hand-made concrete blocks, are shown. The main qualitative characteristics of these two masonry types are identified through the filling out of a Masonry Quality Form, in which the features of the walls’ weaving and cross section are illustrated. The analysis of the experimental tests’ results, accompanied by a careful qualitative description of the masonry panels, is a preliminary step for the integration of the masonry categories of the Italian structural Code. as “modern” ones. The mechanical characteristics refer to historic masonry types in poor conditions (ie not good quality mortar, thick joints…) but their properties can be modified through corrective coefficients proposed in Table C8 A. 2.2 (Circ. 617/2009), if the presence of some qualifying characteristics (such as the stringcourses or the good quality mortar) is recognized. It is not always immediate to frame existing masonry panels into the stone-categories defined in the Code, due to the heterogeneity and variety of the elements and to the distinct construction techniques. Moreover, in homogeneous territorial zones (ie regional framework), it is possible to find specific masonry types which do not properly fit into any of the categories defined in the Code since are linked to the local materials and specific construction techniques. For example in Tuscany Region, in the areas of Pistoia and Firenze, it was observed the quite widespread presence of two particular masonry types that are different from those defined in the Code. They are the hollow brick blocks masonry, with the holes percentage of the elements major than the upper limit expressed in Tab. C8 A. 2.1 (Circ. 617/09, φ> 45%) and handmade (and built-in-work-site) concrete blocks masonry, denominated “masselli” masonry. In literature, results of in situ experimental campaign on few types of holes brick masonries are available (Borri et al., 2009b), while no information have been found for the mechanical characteriza-
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