25 documents found, page 1 of 3
Durability of bond between EBR-CFRP laminate and concrete after four years of n...
Dushimimana, Aloys; Sena-Cruz, José; Correia, Luís Luciano Gouveia; Pereira, João Miguel; Cabral-Fonseca, Susana; Cruz, RicardoApplication of carbon fibre reinforced polymer (CFRP) composites in strengthening of existing reinforced concrete (RC) structures has been widely accepted. However, the durability of adhesively bonded CFRP-concrete joint has not yet been fully investigated, which therefore paves the way to the topic addressed in this work: the durability of the joint in concrete elements strengthened with CFRP laminate using ex...
Behavior of CFRP composites and epoxy adhesives after long-term exposure to out...
Dushimimana, Aloys; Vassilopoulos, Anastasios P.; Sena-Cruz, José; Pereira, João Miguel; Correia, Luís Luciano Gouveia; Cabral-Fonseca, SusanaCarbon fiber reinforced polymer (CFRP) composites have shown desirable properties in aerospace, automotive, and construction industries. Focusing on the latter and in the context of strengthening existing structures, CFRP composites are typically bonded to concrete structures using epoxy adhesive as a bonding agent. To date, there is a lack of literature on the durability of both the CFRP composite and epoxy ad...
Effects of long-term exposure of NSM CFRP-to-concrete bond to natural and accel...
Dushimimana, Aloys; Sena-Cruz, José; Correia, Luís Luciano Gouveia; Pereira, João Miguel; Cabral-Fonseca, Susana; Cruz, RicardoCarbon fiber reinforced polymer (CFRP) composites can be used to strengthen existing reinforced concrete (RC) structures. The CFRP laminate can be bonded to RC structure using epoxy adhesive via near-surface mounted (NSM) strengthening technique. However, existing literature generally lacks data about durability of NSM CFRP-to-concrete bond. In this study, strengthened concrete elements were exposed to laborato...
Natural outdoor and laboratory-controlled ageing of epoxy adhesives and CFRP la...
Dushimimana, Aloys; Correia, Luís Luciano Gouveia; Cruz, Ricardo; Cabral-Fonseca, Susana; Pereira, João Miguel; Sena-Cruz, JoséAgeing of epoxy adhesive and carbon fibre reinforced polymer (CFRP) laminate was addressed in this work. The specimens were exposed to laboratory-controlled (20 °C/55% RH, and water immersion at 20 °C) and outdoor (ageing mainly promoted by carbonation, freeze-thaws, airborne chlorides, and elevated temperatures) conditioning for up to four years. The results from tensile tests showed water immersion of the epo...
How are the carcasses from the turkey production industry eliminated? A potenti...
Cruz, Ricardo; Lima, NelsonThe Americas is the world's largest turkey region, producing over 60% of the world's total. After the US, Brazil is the region's second largest producer with over 390,000 tonnes per year. Then, the European Union is the third world producer. For various reasons, turkey production is subject to losing large numbers of herds, particularly young turkeys are vulnerable to respiratory diseases, outbreaks, including ...
Analytical prediction of flexural behaviour of RC slabs strengthened with non-p...
Dushimimana, Aloys; Correia, Luís Luciano Gouveia; Cruz, Ricardo; Cabral-Fonseca, Susana; Pereira, João Miguel; Sena-Cruz, JoséThe flexural behaviour of reinforced concrete (RC) slabs strengthened with carbon fibre reinforced polymer (CFRP) laminates is analytically addressed in this work. Analytical approaches are developed for (i) near-surface mounted (NSM), (ii) externally bonded reinforcement (EBR), and the EBR prestressed using (iii) mechanical anchorage (MA) and (iv) gradient anchorage (GA) systems. The analytical results show a ...
Desmaterialização da avaliação das aprendizagens em português
Cruz, RicardoComunicação apresentada no MeetUP23 – 2º Encontro de Investigadores do LE@D – Inovação e Ciência, Categoria Formação Avançada, 27 de maio de 2023, Sessão A2 | https://eventos.uab.pt/meetup23/
Durability of CFRP-concrete bond in EBR and NSM systems under natural ageing fo...
Dushimimana, Aloys; Correia, Luís; Cruz, Ricardo; Pereira, João Miguel; Sena-Cruz, JoséCarbon Fibre Reinforced Polymer (CFRP) composites have been shown to possess desirable properties for strengthening of reinforced concrete (RC) structures. The application of CFRP composites is mainly through Externally Bonded Reinforcement (EBR) or Near Surface-Mounted (NSM) techniques. The main objective of the present work was to provide insights on durability of bond between concrete and CFRP strips install...
Architecture for intensive care data processing and visualization in real-time
Cruz, Ricardo; Guimarães, Tiago André Saraiva; Peixoto, Hugo; Santos, ManuelClinical data is growing every day. Ergo, to treat, store and publish such data is an emergent task. Furthermore, analysing data in real-time using streaming and processing technologies and methods, in order to obtain quality data, prepared to support decision making is of extreme value. Big Data emerged with the introduction of real-time processing, thus revolutionizing traditional technologies and techniques ...
Bond durability of concrete-cfrp ebr and nsm systems under natural ageing
Cruz, Ricardo; Correia, Luís Luciano Gouveia; Cabral-Fonseca, Susana; Sena-Cruz, JoséThe use of Carbon Fibre Reinforced Polymer (CFRP) as reinforcement material for strengthening of existing reinforced concrete (RC) structures has been increasing. These materials can be applied mainly by using two strengthening techniques: (i) the Externally Bonded Reinforcement (EBR) by the application of the CFRP on the concrete surface; and, (ii) the Near Surface Mounted (NSM) by the insertion of the CFRP in...