Author : Adolfo Preciado 1
Date of Publication :22nd November 2022
Abstract: The addition of vertical and horizontal concrete ties in confined masonry has demonstrated to be an economic and suitable solution for obtaining structural integrity and prevents brittle failure. Conversely, the seismic energy dissipation of confined masonry is still doubtful in case of strong seismic action. The present research is objected at reviewing and describing several applications and smart materials (FRPs and SMAs) for the active prestressing on masonry structures. Moreover, to describe the seismic energy dissipative capability of active prestressing with smart materials in order to apply it in confined masonry housing, especially at the connection between masonry panel and vertical concrete ties. Compared to prestressing steel, FRPs are more resistant to corrosion, larger tensile strength, insensitivity to electromagnetic fields, 15-20% lighter and it is possible to add optical fiber sensors for monitoring. The SMA behavior exhibits two main transformation phases such as Austenite and Martensite that could be either thermal or stress induced and the superelastic performance is attractive for seismic energy dissipation. In further stages of this research, it is analyzed the feasibility of including economic horizontal prestressing devices of smart materials of SMA and FRPs in the joint between masonry panels and concrete ties.
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