Project/scholarship details
- Project/scholarship ID
112396
- Reference
PTDC/ECM/112396/2009
- FundRef URI
- Funder
FCT - Fundação para a Ciência e a Tecnologia, I.P.
- Funder's country
Portugal
- Funding program
5876-PPCDTI
- Funding amount
157,498.00 €
- Start date
2011-03-21
- End date
2014-09-20
Documents
Diferentes métodos de avaliação do comportamento da ligação de laminados de CFR...
Fernandes, Pedro Miguel Gomes; Silva, Patrícia; Sena-Cruz, José; Xavier, José; Coelho, Mário Rui Freitas; Barros, Joaquim A. O.O presente trabalho pretende contribuir para o conhecimento da durabilidade da técnica baseada na inserção de laminados de CFRP (Carbon Fiber Reinforced Polymer) no betão de recobrimento (NSM, Near-Surface Mounted). Para isso, foram realizados trinta e cinco ensaios de arrancamento direto em provetes cúbicos previamente submetidos a ciclos de molhagem e secagem na presença de cloretos (NaCl). A monitorização do...
Comportamento estrutural a longo prazo e de durabilidade de elementos de betão ...
Almeida, Joana Patrícia da SilvaDissertação de mestrado integrado em Engenharia Civil (área de especialização em Perfil de Estruturas e Geotecnia); A presente dissertação desenvolveu-se no âmbito do projeto de investigação em curso CutInDur (PTDC/ECM/112396/2009). Este projeto tem como objetivo final dar um contributo na avaliação do comportamento estrutural a longo prazo e de durabilidade de elementos de betão reforçados de acordo com a técn...
Evaluation of code formulations for NSM CFRP bond strength of RC elements
Coelho, Mário Rui Freitas; Sena-Cruz, José; Dias, Salvador J. E.; Miranda, Tiago F. S.This paper presents an analytical analysis which intends to verify the accuracy of existing code formulations for predicting the pullout strength of NSM CFRP systems applied to concrete. A database with a limited set of parameters was gathered and two code formulations were tested on it. Then, a new approach was tested. This uses Data Mining algorithms to develop models to predict the pullout strength based on ...
Creep behavior of concrete elements strengthened with NSM CFRP laminate strips ...
Sena-Cruz, José; Silva, Patrícia; Fernandes, Pedro Miguel Gomes; Azenha, Miguel; Barros, Joaquim A. O.; Sousa, Christoph Fernandes; Castro, FernandoThe present work intends to contribute for the knowledge on the long-term deformational performance of concrete structures strengthened with the near-surface mounted (NSM) technique. For that purpose a wide experimental program has been initiated using beam pullout and slab specimens submitted to sustained loads under the following environmental conditions: (i) 20ºC temperature and 55% relative humidity; (ii) i...
Creep behavior of RC slabs strengthened NSM CFRP laminate strips under differen...
Sena-Cruz, José; Silva, Patrícia; Fernandes, Pedro Miguel Gomes; Azenha, Miguel; Barros, Joaquim A. O.; Sousa, Christoph FernandesWith the aim of analyzing the long-term deformational performance of concrete elements flexurally strengthened with the near-surface mounted (NSM) technique, an experimental program has been launched using slab specimens submitted to sustained loads under the following environmental conditions: (i) 20ºC temperature and 55% relative humidity; (ii) immersed in water tank at 20ºC with 0% of chlorides; (iii) immers...
Behaviour of concrete elements strengthened with near surface mounted CFRP stri...
Silva, Patrícia; Fernandes, Pedro Miguel Gomes; Sena-Cruz, José; Azenha, Miguel; Barros, Joaquim A. O.The present work intends to contribute for the knowledge on durability performance of the near-surface mounted (NSM) strengthening technique, which is an issue that still requires significant research effort. For that purpose, an experimental program was developed using cubic pullout and slab specimens strengthened with NSM carbon fiber reinforced polymer (CFRP) strips. These specimens were submitted to thermal...
Bond and flexural behaviour of a NSM CFRP strengthening system under fatigue lo...
Fernandes, Pedro Miguel Gomes; Silva, Patrícia; Sena-Cruz, José; Azenha, Miguel; Teixeira, Tiago André Nunes; Barros, Joaquim A. O.The present paper aims to contribute to the knowledge of the long-term performance and durability of concrete structures strengthened with the Near-Surface Mounted (NSM) technique. The durability of strengthening systems is affected by environmental conditions, such as freeze-thaw and temperature cycling, exposure to aggressive chemical agents and ultraviolet light. Additionally, the long-term performance of th...
A new methodology for assisting quality control of NSM-CFRP systems since very ...
Fernandes, Pedro Miguel Gomes; Granja, José; Sena-Cruz, José; Azenha, Miguel; Benedetti, AndreaThe performance of NSM systems directly depends on the performance of the adhesive which can only be reached if a proper curing conditions and time are assured. In order to assess the curing process of the adhesives, as well as the corresponding bond behavior, adequate non-destructive testing approaches are required. Nonetheless, scarce information could be found in the literature in concern to this relevant to...
Creep behavior and durability of concrete elements strengthened with NSM CFRP s...
Silva, Patrícia; Fernandes, Pedro Miguel Gomes; Sena-Cruz, José; Azenha, Miguel; Barros, Joaquim A. O.This paper presents an experimental program aimed to better understand durability and long-term deformational performance of concrete structures strengthened with the near-surface mounted (NSM) technique. The conducted experiments include beam pullout specimens and slabs. Both types of specimens were submitted to sustained loads under the following environmental conditions: (i) placed in the laboratory premises...
Comportamento à fadiga de elementos de betão reforçados através de sistemas NSM...
Fernandes, Pedro Miguel Gomes; Silva, Patrícia; Sena-Cruz, José; Azenha, Miguel; Barros, Joaquim A. O.O presente trabalho tem como objetivo principal contribuir para o conhecimento do comportamento a longo prazo de estruturas de betão reforçadas de acordo com a técnica NSM (Near-Surface Mounted). O comportamento a longo prazo das estruturas reforçadas é afetado pelas condições ambientais, tais como gelo/degelo, ciclos térmicos, exposição a agentes químicos agressivos e radiação ultra violeta. Além disso, o comp...
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