The addition of metallic fibres in concrete is a widely used technique to increase its resistance to crack opening, energy absorption capacity, and durability. The properties of the resulting composite strongly depend on the geometry of the fibres, which usually dispose of an hooked end, as well as on the mechanical properties of both the fibre and the concrete. The…
A CiviTest – Pesquisa de Novos Materiais para a Engenharia Civil, Lda. é uma empresa cujas competências estão focadas na Prestação de Serviços para a Indústria da Construção Civil e afins, incluindo projeto, ensaios ao nível do material e de sistemas construtivos, investigação e desenvolvimento de materiais (www.civitest.pt). A CiviTest é uma empresa de referência na área da Indústria da…
In this work, a computational model for simulating the relevant mechanisms governing the pull-out of a discrete reinforcement embedded into cement based materials is described. The model accounts for the material and geometric properties of the reinforcement, which can include an anchored end, the interface between reinforcement and surrounding medium, and the relative inclination of the reinforcement to the crack…
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).…
Este 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…
