Strengthening of masonry structures under compressive loads by using FRP strips

Strengthening of masonry structures with FRP strips embedded in the bed joints is an innovative technique, investigated up to now only in very few research works. The intervention can be particularly suitable for confining the masonry under compressive loads, by easy in-situ applications. In the research presented in the paper both mechanical and feasibility aspects of the proposed technique are evaluated. An extensive selection of materials (both for repointing mortars and strips) was preventively performed in order to optimize the strengthening and durability performances. Particularly, studies on bond were carried out considering the different stress conditions under which a masonry member can be subjected, e.g. at the time of the application and under more severe actions. Finally, to validate the technique under real critical conditions, experimental tests on specimens are going to be performed: a series of brick masonry panels in undamaged and pre-damaged conditions will be reinforced and than subjected to compressive loads and creep simulations.