Service life design of concrete structures by numerical modelling of chloride ingress

Boutz, M.M.R.; Wegen, G. van der; Haverkort, R; Roelfstra, P. E.

doi:10.1201/9781439828410.ch15

Cited by 4 publications

(2 citation statements)

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“…Several prediction models for concrete structures exposed to carbonation have been proposed in the past decades, as pre-sented by Sanjuán et al (2003). More recently, various models for carbonation and chloride contamination have been pro-posed by other researchers, international research projects and standards (Boutz et al, 2008;CS, 2004;DuraCrete, 2000;EHE, 2008;Kamaitis, 2008;Kwon et al, 2009;Lay et al, 2003;Life-365, 2012;NIST, 2011;SCA, 2007;Silva et al, 2014;Taffes and Sistonen, 2013). Nevertheless, these models present some limitations such as reliable information regarding the statistical dispersion of variables.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic service life of RC structures under carbonation

Faustino

Brás

Gonçalves

et al. 2017

Magazine of Concrete Research

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The service life of reinforced concrete structures is assessed for carbonation environments using mathematical models based on different tests: carbonation test-based modelling and air permeability test-based modelling. The study includes experimental testing of five concrete mixes with respect to compressive strength, accelerated carbonation and air permeability with different types of cement, in order to assess the models using probabilistic calculus. Both mathematical models are part of the Portuguese National Annex to the European standard EN 206 for the estimation of design service life. Engineers have the option of choosing which of the two models to use, which means that using either model should produce similar results. The design service life results show that the two models do not converge. The different principle of each test – accelerated carbonation and air permeability – and their different characteristics regarding the various parameters of the modelling equations are some of the aspects discussed.

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Section: Introductionmentioning

confidence: 99%

Probabilistic service life of RC structures under carbonation

Faustino

Brás

Gonçalves

et al. 2017

Magazine of Concrete Research

View full text Add to dashboard Cite

show abstract

“…There are currently several conceptual frameworks and prediction models for concrete structures exposed to carbonation and chloride contamination (DuraCrete 2000; Lay et al 2003;BY 50 2004;CS TR 61 2004;Concrete Report 12 2007;Kamaitis 2008;Silva et al 2014;Boutz et al 2008;EHE 08 2008;Kwon et al 2009;NIST 2011;Life-365 2012;Taffes, Sistonen 2013). However, the development of these models may present some difficulties such as the lack of information concerning the scattering of variables.…”

Section: Introductionmentioning

confidence: 99%

Lifetime Prediction of Reinforced Concrete Structures in Carbonation Environments Carbonation Modelling vs Air Permeability Modelling

Faustino

Gonçalves

Brás

et al. 2017

Journal of Civil Engineering and Management

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This article compares two models for the prediction of lifetimes of reinforced concrete structures in carbonation environments based on different tests: carbonation test-based modelling and air permeability test-based modelling. The study also includes experimental testing of five concrete mixes with different types of cement in order to validate the models using safety factors. The tests included compressive strength, accelerated carbonation and air permeability. Both models are defined in a European standard as being alternative to each other, meaning that their results for the same concrete composition and the same environment should converge. The results show that both current models can scarcely constitute alternative to each other. Design lifetime results are far from similar for each concrete mix and each exposure class. The different nature of each test – accelerated carbonation and air permeability – and their different characteristic such as the scattering of results and the unrelated parameters of the modelling equations are some of the features discussed, including the possibility of using different safety factors as function of the model and definition of possible correlation between tests.

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Service Life Prediction of Repaired Structures Using Concrete Recasting Method: State-of-the-Art

Taffese

Sistonen

2013

Procedia Engineering

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Service life design of concrete structures by numerical modelling of chloride ingress

Cited by 4 publications

References 0 publications

Probabilistic service life of RC structures under carbonation

Probabilistic service life of RC structures under carbonation

Lifetime Prediction of Reinforced Concrete Structures in Carbonation Environments Carbonation Modelling vs Air Permeability Modelling

Service Life Prediction of Repaired Structures Using Concrete Recasting Method: State-of-the-Art

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