The Interface Behavior between External FRP Reinforcement and Masonry

Abstract:

The need to guarantee higher safety levels of masonry structures under both short and long term conditions, have led to the use of new materials and technologies, in conjunction or in place of traditional ones. In this context, fiber-reinforced composite materials have gained an increasing success, mostly for strengthening, retrofitting and repair existing structures. As well known, the analysis of the interface performance of FRP (Fiber Reinforced Polymer) composites and masonry substrate is a critical problem as it influences the effectiveness of the technique. The present paper reports part of a large research project, still in progress, focused on the analysis of the bond performance between FRP sheet and different type of masonry substrates. The obtained experimental data were analysed in terms of bond strength and the kind of failure. The influence of the deformability of the strengthening material as well as the mechanical performance of the substrates are also discussed.

• Periodical: Key Engineering Materials (Volume 624)
• Pages: 178-185
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.624.178
• Online since: September 2014
• Authors: Marianovella Leone*, Margherita Stefania Sciolti, Francesco Micelli, Maria Antonietta Aiello
• Keywords: Bond, FRP, Masonry

References

[1] CNR DT 200/2001- R1 – Guide for the Design and Construction of externally bonded FRP System for Strengthening Existing Structures – Italy, (2007).

[2] Leone M., Sciolti M.S., Micelli F., Aiello M.A., Bond stress-slip behaviour of FRP materials bonded to masonry elements, 9th International Masonry Conference 2014, Guimaraes, Portugal, Accepted for publication.

DOI: 10.4028/www.scientific.net/kem.624.178

[3] UNI EN 1926 Natural stone test methods – Determination of uniaxial compressive strength, (2007).

[4] UNI EN 12372 "Natural stone test methods – Determination of flexural, (2006).

[5] UNI EN 14580 "Natural stone test methods – Determination of static elastic modulus, (2005).

[6] Maria Rosa Valluzzi, Daniel V. Oliveira, Angelo Caratelli, Giulio Castori, Marco Corradi, Gianmarco de Felice, Enrico Garbin, David Garcia, Leire Garmendia, Ernesto Grande, Ugo Ianniruberto, Arkadiusz Kwiecień, Marianovella Leone, Gian Piero Lignola, Paulo B. Lourenço, Marialaura Malena, Francesco Micelli, Matteo Panizza, Catherine G. Papanicolaou, Andrea Prota, Elio Sacco, Thanasis C. Triantafillou, Alberto Viskovic, Bogusław Zając, Gina Zuccarino Round robin test for composite-to-brick shear bond characterization, Materials and Structures, Springer – 2012 45: 1761-1791.

DOI: 10.1617/s11527-012-9883-5