Post-Cracking FRCM Strengthening of an Arch Composed by Hollow Clay Elements Embedded in Mortar: Experimental Investigations and Numerical Analyses

Abstract:

The use of hollow clay elements (fictile tubules, amphorae and caroselli) for erecting arches, vaults and domes was a building technique very popular in the Mediterranean area from the Roman Empire on. It was devised to ensure lightness and thermal insulation of structural elements. This paper presents experimental investigations and some preliminary numerical analyses regarding an arch consisting of caroselli embedded in mortar. A full-scale laboratory model was constructed and subject to vertical loads. After the development of hinges, the arch was repaired and strengthened with FRCM strips and further loads were applied to investigate the post-strengthening mechanical behavior. Also, numerical models of caroselli and mortar are created in Abaqus. Then, an elementary cell comprised of caroselli and mortar is created. The mechanical properties of the cell are evaluated by studying its behavior under uniaxial tensile and compressive loads. These properties set the basis for a possible homogenized material which can be used for numerical analyses of the arch.

• Periodical: Key Engineering Materials (Volume 747)
• Pages: 142-149
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.747.142
• Online since: July 2017
• Authors: Simone Tiberti*, Carmelo Scuro, Rosamaria Codispoti, Renato S. Olivito, Gabriele Milani
• Keywords: Experimental Tests, Fiber Reinforced Cementitious Matrix FRCM, Fictile Tubules, Homogenization, Masonry

References

[1] R.S. Olivito, C. Scuro, R. Codispoti, Experimental analysis of typical hollow clay fictile tubules of cultural heritage of Mediterranean area, in: Structural Analysis of Historical Constructions: Anamnesis, diagnosis, therapy, controls (2016).

DOI: 10.1201/9781315616995-185

[2] M. Spanu, L'impiego di anfore nelle volte romane e tardo-antiche: distribuzione e modalità. In Studi e ricerche del dipartimento del mondo antico, Tipografia Quatrini, Viterbo, (2007).

[3] C. Gattuso, R.S. Olivito, R. Codispoti, Mechanical characterization of fictile elements typical of Mediterranean architecture, Proceedings of 4th AIES National Conference (2013) 61-72.

[4] R.S. Olivito, C. Scuro, R. Codispoti, Static analysis of masonry kilns built with fictile tubules bricks, AIP Conference Proceedings 1790: 1 (2016) 130006.

DOI: 10.1063/1.4968724

[5] ISO 13934-1: 2013. Textiles - Tensile properties of fabrics - Part 1: determination of maximum force and elongation at maximum force using the strip method.

DOI: 10.3403/01736255

[6] CNR-DT 200 R1/2013. Guide for the Design and Construction of Externally Bonded FRP Systems for Strengthening Existing Structures - Materials, RC and PC structures, masonry structures.

DOI: 10.1061/40753(171)159

[7] R. Codispoti, D.V. Oliveira, R.S. Olivito, P.B. Lourenço, R. Fangueiro, Mechanical performance of natural fiber-reinforced composites for the strengthening of masonry, Compos. Part B Eng. 77 (2015) 74-83.

DOI: 10.1016/j.compositesb.2015.03.021

[8] ABAQUS®. Theory manual. Version 6. 13-2; (2013).

[9] P.B. Lourenço, Computational strategies for masonry structures. PhD Thesis, TU Delft, Delft University of Technology, Delft, (1996).