Fibre-based composite materials for the seismic strengthening of masonry ring beams : cyclic tests on full-scale samples

Boem, Ingrid (avtor), Gattesco, Natalino (avtor), Rizzi, Emanuele (avtor), Dudine, Allen (avtor), Gams, Matija (avtor)

In masonry buildings, ring beams are crucial structural components for preventing out-of-plane failure of walls and fostering global seismic responses. The traditional approach of building reinforced concrete ring beams in existing structures is very invasive, which has motivated present research into new ways of constructing using modern fibre-based composite materials. Two solutions are tested by quasi-static, horizontal bending cyclic tests on full-scale, solid brick and rubble stone masonry. The first solution consists of horizontal Carbon Fibre–Reinforced Polymer (CFRP) strips externally bonded on the outer masonry surface, while the second comprises embedded Glass Fibre-Reinforced Polymer (GFRP) meshes in the masonry bed joints. Simplified analytical models are applied to estimate the strength. Although CFRP strips are applied eccentrically, they proved effective for loads in both directions (the fibres fractured in tension) because of the continu ity of the reinforcement throughout orthogonal walls. The ring beams with GFRP-reinforced bed joints responded very well, as evidenced by tensile fracture of fibres. In both cases, bending resistance was significantly improved. However, tests also showed the importance of certain details to avoid stress concentrations in the fibres (e.g. rounded masonry corners) and bed joint slippage (e.g. full embedment of the GFRP meshes with the mortar).

• Jezik: Angleški jezik
• Ključne besede: civil engineering, structural refurbishment, composites, masonry, ring beams, experimental test, fibre-reinforced polymer
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: FGG - Fakulteta za gradbeništvo in geodezijo
• Leto izida: 2025
• Št. strani: 24 str.
• Številčenje: Vol. 58, iss. mar., [article no.] 97
• PID: 20.500.12556/RUL-168073
• UDK: 69:004
• ISSN pri članku: 1359-5997
• DOI: 10.1617/s11527-025-02617-w
• COBISS.SI-ID: 230336515
• Datum objave v RUL: 27.03.2025

Gradivo je del revije

• Naslov: Materials and structures
• Skrajšan naslov: Mat. struct.
• Založnik: E. & F. N. Spon, RILEM Publications
• ISSN: 1359-5997
• COBISS.SI-ID: 18240005

Licence

• Licenca: CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by/4.0/deed.sl
• Opis: To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.

Sekundarni jezik

• Jezik: Slovenski jezik
• Naslov: Potresno utrjevanje z vodoravnimi zidnimi vezmi iz kompozitnih materialov - ciklični testi na vzorcih v naravnem merilu
• Ključne besede: gradbeništvo, potresna utrditev, kompozitni materiali, zidovje, vodoravne vezi, eksperimentalni test

Projekti

• Financer: ARIS - Javna agencija za znanstvenoraziskovalno in inovacijsko dejavnost Republike Slovenije
• Številka projekta: P2-0185-2019
• Naslov: Potresno inženirstvo

• Financer: Italian Department of Civil Protection
• Številka projekta: Reluis 2022-2024, Reluis 2024-2026, WP5