14 documents found, page 1 of 2
Overview and aspects of the european technical specification CEN/TS 19101:2022,...
Correia, João R.; Ascione, Luigi; Keller, Thomas; Mottram, Toby; Sena-Cruz, José; Paulotto, Carlo; Knippers, Jan; Pacheco, JoãoIn November 2022, the European Committee for Standardization (CEN) published the Technical Specification CEN/TS 19101:2022, “Design of Fibre-Polymer Composite Structures.” These design provisions, which follow the philosophy and partial factor format of the Eurocodes, are a milestone toward the widespread application of composite materials in civil engineering structures. This paper presents an overview and hig...
Acoustic behaviour of GFRP-PUR web-core composite sandwich panels
Proença, Miguel; Santos, Pedro; Godinho, Luís; Neves e Sousa, Albano; Correia, João R.; Garrido, Mário; Sena-Cruz, JoséThis paper presents an experimental and analytical study about the sound insulation of innovative sandwich panels - named EasyFloor – _for the rehabilitation of degraded timber floors in old buildings. Two types of panels were developed: (i) an all-composite sandwich panel, made of glass fibre reinforced polymer (GFRP) face sheets and webs, and polyurethane (PUR) foam; (ii) and a hybrid sandwich panel, where th...
Freeze-thaw durability of vacuum infused glass fibre composites with unsaturate...
Hasan, Tarikul; Correia, João R.; Garrido, Mário; Soares, Francisco; Cabral-Fonseca, Susana; Jorge, Marco; Sena-Cruz, JoséThis paper presents an experimental study about the effects of freeze-thaw cycles (FTC) on the mechanical and thermomechanical properties of glass-fibre reinforced polymer composite laminates produced by vacuum infusion using two different polymer resins: unsaturated polyester (UP) and vinyl ester (VE). Following preconditioning in distilled water for 30 days at 20 ◦C, the composites were subjected to 100, 200 ...
Fire behaviour of reinforced concrete slab strips strengthened with prestressed...
Azevedo, Adriana S.; Firmo, João P.; Correia, João R.; Mohammadifirouz, Reza; Barros, Joaquim A. O.Carbon fibre reinforced polymer (CFRP) composites are now widely used to strengthen reinforced concrete (RC) structures. Among the strengthening systems available, near-surface mounted (NSM)-prestressed CFRP laminates offer several advantages, as they significantly increase the load carrying capacity and also the serviceability performance of RC structures. However, as for other CFRP systems, there is a concern...
In-plane cyclic behaviour of RC frames strengthened with composite sandwich panels
Sousa, Christoph Fernandes; Barros, Joaquim A. O.; Correia, João R.This paper presents an experimental study about the development of a sustainable and multifunctional composite sandwich panel for the rehabilitation of reinforced concrete (RC) buildings from the 1960s to the mid-1980s. For this purpose, the cyclic behaviour of representative RC frames was assessed by performing in-plane quasi-static cyclic tests on three different specimens: (i) a bare RC frame (individual beh...
Numerical simulation of the flexural behaviour of composite glass-GFRP beams us...
Valarinho, Luís; Sena-Cruz, José; Correia, João R.; Branco, Fernando A.This paper presents a numerical study about the flexural behaviour of rectangular composite glass-GFRP beams, comprising annealed glass and GFRP pultruded profiles bonded with two different adhesives: (soft) polyurethane and (stiff) epoxy. The main objectives of this study were: (i) to fully characterize the non-linear behaviour of glass using the smeared crack approach; and (ii) to assess the applicability of ...
Static, dynamic and creep behaviour of a full-scale GFRP-SFRSCC hybrid footbridge
Gonilha, José; Barros, Joaquim A. O.; Correia, João R.; Sena-Cruz, José; Branco, Fernando A.; Ramos, L.; Gonçalves, Delfina; Alvim, Mário R.A three-year research project (Pontalumis) was carried out for the development of an innovative simply supported hybrid footbridge, with 11 m of length and 2 m of width. The footbridge is composed of two pultruded I-shaped glass fibre reinforced polymer (GFRP) girders (400×200(×15) mm2) bonded and bolted to a 37.5 mm thick deck in steel fibre reinforced self-compacting concrete (SFRSCC). The present paper descr...
Pontalumis : ponte pedonal mista GFRP-betão : descrição da solução, ensaios e m...
Gonilha, José; Correia, João R.; Branco, Fernando A.; Sena-Cruz, José; Barros, Joaquim A. O.; Ramos, Luís F.; Gonçalves, Delfina; Santos, ToméEste artigo descreve o desenvolvimento de um protótipo de ponte pedonal à escala real utilizando um sistema estrutural misto inovador com longarinas em perfis pultrudidos de polímero reforçado com fibra de vidro (GFRP) e tabuleiro em betão auto-compactável reforçado com fibras de aço (SFRSCC), no âmbito do projeto PONTALUMIS. O protótipo apresenta um comprimento total de 11.0 m e uma secção transversal composta...
A full-scale innovative GFRP-concrete hybrid footbridge : description and testing
Sena-Cruz, José; Barros, Joaquim A. O.; Ramos, Luís F.; Gonçalves, Delfina; Gonilha, José; Correia, João R.; Branco, Fernando A.The present paper describes the construction process of a full-scale innovative GFRP-concrete hybrid footbridge, and summarizes the main tests performed. This footbridge is 11 m long, 2 m wide, simply supported, and composed of two pultruded I-shaped GFRP girders (0.2 m x 0.4 m) and a 0.04 thick deck in steel fiber reinforced self-compacting concrete (SFRSCC). To evaluate the static and dynamic behavior of this...
Caracterização experimental do comportamento mecânico de painéis sandwich com l...
Escusa, Gonçalo; Garzón Roca, Julio; Abdolpour, Hassan; Sena-Cruz, José; Barros, Joaquim A. O.; Valente, Isabel; Martins, David; Correia, João R.Neste trabalho apresentam-se os resultados de um programa experimental realizado no piso da laje de um protótipo destinado a habitações de emergência em materiais compósitos. Este piso é constituído por painéis sandwich, com lâminas de GFRP e núcleo de poliuretano, apoiados em vigas e pilares em perfis pultrudidos em GFRP. O trabalho realizado tem como objetivo fundamental o estudo do comportamento estrutural d...