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Materials 2016, 9(7), 603;

Fiberglass Grids as Sustainable Reinforcement of Historic Masonry

Department of Mechanical and Construction Engineering, Northumbria University, 209 Wynne-Jones Building, Newcastle upon Tyne NE1 8ST, UK
Department of Engineering, University of Perugia, 92 Via Duranti, Perugia 06125, Italy
Author to whom correspondence should be addressed.
Academic Editor: Luciano Feo
Received: 22 June 2016 / Revised: 10 July 2016 / Accepted: 15 July 2016 / Published: 21 July 2016
(This article belongs to the Section Advanced Composites)
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Fiber-reinforced composite (FRP) materials have gained an increasing success, mostly for strengthening, retrofitting and repair of existing historic masonry structures and may cause a significant enhancement of the mechanical properties of the reinforced members. This article summarizes the results of previous experimental activities aimed at investigating the effectiveness of GFRP (Glass Fiber Reinforced Polymers) grids embedded into an inorganic mortar to reinforce historic masonry. The paper also presents innovative results on the relationship between the durability and the governing material properties of GFRP grids. Measurements of the tensile strength were made using specimens cut off from GFRP grids before and after ageing in aqueous solution. The tensile strength of a commercially available GFRP grid has been tested after up 450 days of storage in deionized water and NaCl solution. A degradation in tensile strength and Young’s modulus up to 30.2% and 13.2% was recorded, respectively. This degradation indicated that extended storage in a wet environment may cause a decrease in the mechanical properties. View Full-Text
Keywords: Textile Reinforced Mortars (TRM); GFRP grids; ageing tests; mechanical tests; masonry walls; masonry tile vaults; ring beam reinforcement Textile Reinforced Mortars (TRM); GFRP grids; ageing tests; mechanical tests; masonry walls; masonry tile vaults; ring beam reinforcement

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Righetti, L.; Edmondson, V.; Corradi, M.; Borri, A. Fiberglass Grids as Sustainable Reinforcement of Historic Masonry. Materials 2016, 9, 603.

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