Experimental behaviour of non-structural masonry vaults reinforced through fibre-reinforced mortar coating and subjected to cyclic horizontal loads. (1st October 2018)

• Record Type: Journal Article
• Authors: Gattesco, Natalino; Boem, Ingrid; Andretta, Veronica
• Is Part Of: Engineering structures. Volume 172(2018)
• Page Start: 419
• Page End: 431
• Publication Date: 2018-10-01
• Subjects: Structural rehabilitation -- Masonry vaults -- Strengthening technique -- Experimental test -- Composite materials -- Analytical predictions; Structural engineering -- Periodicals; Structural analysis (Engineering) -- Periodicals; Construction, Technique de la -- Périodiques; Génie parasismique -- Périodiques; Pression du vent -- Périodiques; Earthquake engineering; Structural engineering; Wind-pressure; Periodicals; 624.105
• DOI: 10.1016/j.engstruct.2018.06.044
• Languages: English
• ISSNs: 0141-0296

Abstract

Highlights: Experimental cyclic tests on full-scale, non-structural masonry barrel vaults. Assessment of the effectiveness of a strengthening technique based on GFRM. The resistance increases ranged from 2 to 4 times that of plain masonry. Considerably benefits emerged also in terms of ductility. An analytical approach to quantify the samples lateral resistance is presented. Abstract: The paper collects the results of an innovative experimental campaign carried out on full-scale, non-structural masonry barrel vaults, so to assess, by means of quasi-static cyclic tests, the lateral performances of a strengthening technique based on the application, at the extrados or the intrados, of a 30 mm thick mortar layer with Glass Fiber-Reinforced Polymer meshes embedded. The samples were made of solid bricks, with a radius of 2060 mm and are 770 mm wide and 120 mm thick; three vaults have a span of 3980 mm and other three of 3575 mm. It emerged that the presence of the composite mesh contrasted the collapse mechanism, leading to resistance increases ranging from 2 to 4 times that of plain masonry and increasing considerably the ultimate horizontal displacements at crown section. A simplified analytical approach is also presented in the paper, to quantify the samples lateral resistance for assigned geometry and mechanical characteristics of materials.