Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Durability of CFRP-concrete bond in EBR and NSM systems under natural ageing for a period of three years
This work aims at assessing the durability of the CFRP-concrete bond exposed to different outdoor ageing environments for a period of three years. ; Carbon 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 installed according to EBR and NSM techniques under the effects of ageing induced by outdoor conditions for a period of three years. Specimens were placed in four different outdoor environments (E3-E6) with ageing mainly induced by freeze-thaw attacks, carbonation, airborne chlorides, and elevated temperatures. Besides, the study included a reference environment (E1: ≈20 C / 55% RH) and another environment (E2: ≈20 C / water immersion). The bond test results for the specimens collected from the aforementioned outdoor environments showed a low degradation of the CFRP-concrete bond after three years. ; This work was carried out in scope of the project FRPLongDur POCI-01-0145-FEDER-016900 (FCT PTDC/ECM-EST/1282/2014) and Durable-FRP (PTDC/ECI-EGC/4609/2020) funded by national funds through the Foundation for Science and Technology (FCT) and co-financed by the European Fund of the Regional Development (FEDER) through the Operational Program for Competitiveness and Internationalization (POCI) and the Lisbon Regional Operational Program. This work was partly financed by FCT / MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020. This work is financed by national funds through FCT under grant agreement [DFA/BD/08403/2021] attributed to the first author.
Durability of CFRP-concrete bond in EBR and NSM systems under natural ageing for a period of three years
This work aims at assessing the durability of the CFRP-concrete bond exposed to different outdoor ageing environments for a period of three years. ; Carbon 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 installed according to EBR and NSM techniques under the effects of ageing induced by outdoor conditions for a period of three years. Specimens were placed in four different outdoor environments (E3-E6) with ageing mainly induced by freeze-thaw attacks, carbonation, airborne chlorides, and elevated temperatures. Besides, the study included a reference environment (E1: ≈20 C / 55% RH) and another environment (E2: ≈20 C / water immersion). The bond test results for the specimens collected from the aforementioned outdoor environments showed a low degradation of the CFRP-concrete bond after three years. ; This work was carried out in scope of the project FRPLongDur POCI-01-0145-FEDER-016900 (FCT PTDC/ECM-EST/1282/2014) and Durable-FRP (PTDC/ECI-EGC/4609/2020) funded by national funds through the Foundation for Science and Technology (FCT) and co-financed by the European Fund of the Regional Development (FEDER) through the Operational Program for Competitiveness and Internationalization (POCI) and the Lisbon Regional Operational Program. This work was partly financed by FCT / MCTES through national funds (PIDDAC) under the R&D Unit Institute for Sustainability and Innovation in Structural Engineering (ISISE), under reference UIDB/04029/2020. This work is financed by national funds through FCT under grant agreement [DFA/BD/08403/2021] attributed to the first author.
Durability of CFRP-concrete bond in EBR and NSM systems under natural ageing for a period of three years
Dushimimana, Aloys (Autor:in) / Correia, Luís (Autor:in) / Cruz, Ricardo (Autor:in) / Pereira, João M. (Autor:in) / Sena-Cruz, José (Autor:in)
28.07.2022
Sonstige
Elektronische Ressource
Englisch
Reinforced concrete , Engenharia e Tecnologia::Engenharia Civil , Cidades e comunidades sustentáveis , EBR , strengthening with CFRP , Epoxy adhesive , CFRP-concrete bond , Engenharia e Tecnologia::Engenharia dos Materiais , tensile strength , Produção e consumo sustentáveis , Ação climática , CFRP laminate , NSM
DDC:
690
| Elsevier | 2024
Durability of bond in NSM CFRP-concrete systems under different environmental conditions
| British Library Online Contents | 2018
Durability of bond in NSM CFRP-concrete systems under different environmental conditions
| BASE | 2018