Corrosion process and abatement in reinforced concrete wrapped by fiber reinforced polymer

Spainhour, Lisa K.; Wootton, Isaac A

doi:10.1016/j.cemconcomp.2008.02.004

Cited by 23 publications

(7 citation statements)

References 4 publications

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“…The results supported the previous studies (Spainhour & Wootton, 2008). When current passes through concrete, the minerals are suspended in a salt solution, and a certain amount of energy is needed to initiate corrosion in steel bars embedded in concrete.…”

Section: Comparison Of Theoretical and Actual Corrosion Mass Loss Of Rebarssupporting

confidence: 91%

Corrosion Resistance Of High-Performance Composite Beams

Hossain¹

2021

Preprint

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The research concentrated on the corrosion resistance of reinforced self-consolidating concrete (SCC), lightweight SCC (LWSCC), fiber reinforced LWSCC (FRLWSCC), Engineered cementitious composite (ECC) and composite (ECC-SCC/LWSCC) beams. The performance of corroded beams were analyzed based on current measurements, half-cell potential readings, crack pattern/width, rebar mass loss and diameter reduction from accelerated corrosion tests. Corroded and their companion uncorroded beams were tested to failure under four-point loading to evaluate load-deflection response, crack pattern, 1st flexure/diagonal cracking load, failure load and failure modes. Composite beams with higher ECC layer thickness exhibited superior corrosion resistance than their lower thickness counterparts and full depth SCC or LWSCC counterparts as well as performance of beams with ECC wrap was better than those with layer. Overall, ECC beams can be a superior alternative of their conventional counterparts and ECC can be used as layer or wrapping in conventional/LWSCC beams to enhance corrosion resistance and structural performance

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Section: Comparison Of Theoretical and Actual Corrosion Mass Loss Of Rebarssupporting

confidence: 91%

Corrosion Resistance Of High-Performance Composite Beams

Hossain¹

2021

Preprint

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“…O Quadro 4 resume as vantagens e as desvantagens de se empregar esse método de ensaio. PAGE et al, 2002;AUSTIN;LYONS;ING, 2004;SPAINHOUL;WOOTTON, 2008;PRABAKAR;MANOJARAN;NEELAMEGAM, 2009;HALMEN;REINSCHMIDT, 2009;AHMAD, 2009). Em relação às concentrações de cloretos empregadas nas soluções, essas estão em torno de 1 M (ALONSO et al, 1998;ALONSO, 2002;LEE;NOGUCHIB;TOMOSAWAC, 2002;MILLER, 2003;CASTELLOTE;TORRES, 2006;ABSORRA et al, 2011).…”

Section: Ciclos De Imersão E Secagemunclassified

Revisão sobre ensaios acelerados para indução da corrosão desencadeada por cloretos em concreto armado

Meira

Ferreira

2019

Ambient. constr.

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Resumo A corrosão de armaduras desencadeada por cloretos é um dos principais problemas que afetam as estruturas de concreto armado. Considerando o estudo desse tipo de problema, a velocidade na coleta dos dados, a possibilidade de controle das variáveis que influenciam o processo de corrosão e o baixo custo na realização dos testes têm sido aspectos motivadores da opção por realizar ensaios acelerados para indução da corrosão por cloretos em vez de ensaios baseados em exposição natural. Com o decorrer dos anos, embora tenha havido evolução nos procedimentos adotados nos ensaios acelerados, ainda não há uma padronização amplamente praticada nas pesquisas. Este trabalho faz uma revisão sobre as principais metodologias de ensaio empregadas para induzir a corrosão por cloretos praticadas no Brasil e no mundo, discutindo suas vantagens e desvantagens e gerando uma reflexão em relação à padronização de procedimentos. Nesse sentido, sugere, entre outros aspectos, o emprego de procedimentos de ensaios acelerados que guardem proximidade com condições reais de exposição e a padronização nos critérios empregados na identificação da despassivação da armadura e na preparação dos corpos de prova. Essas ações contribuem para diminuir a variabilidade de resultados e facilitam a comparação entre estudos de natureza semelhante.

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“…The desirable properties of concrete surface coatings would include water impermeability, water vapor permeability, thermal stability, adequate adhesion, crack-bridging ability, and adequate elasticity. Spainhour and Wootton (2008) investigated the performance of steel reinforcement embedded in concrete samples, encased by carbon fiber reinforced polymer (CFRP) wraps. Concrete samples were wrapped with 0 to 3 fabric layers impregnated with two different epoxies.…”

Section: Concrete Surface Treatmentsmentioning

confidence: 99%

Reinforcement corrosion in coastal and marine concrete: A review

Dauji¹

2018

CJCRL

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Concrete is used as a structural material for construction of buildings, jetties, harbors, etc. in many coastal and marine locations. The reinforcement used in concrete is susceptible to corrosion, resulting in loss of steel area, loss of bond, expansion of the reinforcement volume leading to cracking or spalling of concrete. Marine environment induces higher corrosion of reinforcement, compared to in-land locations. Concrete exposed to tidal fluctuations, or to the action of waves and currents are among the most severely affected. Corrosion of reinforcement in concrete is of major concern in coastal and marine environment. Control and monitoring of corrosion is a big challenge to engineers. In the recent years, different investigators reported their studies in this area. Depending on the severity of the exposure conditions, different corrosion inhibitors and protection methods have been attempted with varying degrees of success. The present article presents a generic review of the corrosion issues in marine concrete. Drawing from the experiences of the various researchers, the corrosion measurements, and corrosion control schemes, including use of coated reinforcements and corrosion inhibitors are discussed. The durability performance based design of concrete in the probabilistic framework and the life cycle cost analysis for durability design decisions have been identified as the future direction of corrosion protection of coastal and marine structures.

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Corrosion process and abatement in reinforced concrete wrapped by fiber reinforced polymer

Cited by 23 publications

References 4 publications

Corrosion Resistance Of High-Performance Composite Beams

Corrosion Resistance Of High-Performance Composite Beams

Revisão sobre ensaios acelerados para indução da corrosão desencadeada por cloretos em concreto armado

Reinforcement corrosion in coastal and marine concrete: A review

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