Performance Evaluation of Concrete Bridge Deck Affected by Chloride Ingress

Konečný, Petr; Tikalsky, Paul J.; Tepke, David G

doi:10.3141/2028-01

Cited by 15 publications

(23 citation statements)

References 5 publications

(2 reference statements)

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“…Besides the capability of the modeling the cracking effect feature, the model also allows for simplified description of the damage to the waterproof insulation under the asphalt coating. The durability evaluation of selected bridge deck protection strategies is based on the work [4] and [6]. It is enriched by introducing the effects of the aging of concrete via time varied diffusion coefficients [19].…”

Section: D Fea Diffusion Model Taking Into Account the Effects Of Crmentioning

confidence: 99%

“…(see e.g. [3][4][5][6][7][8][9][10]). However, models that aims to investigate durability of bridge deck with cracks or even waterproof membrane both from deterministic, not mentioning probabilistic, standpoint are still under intensive development.…”

Section: Introductionmentioning

confidence: 99%

“…There were attempts to reflect the need for the crack effect modeling. The Finite Element Analysis (FEA) of chloride ingress into concrete with crack was considered in [6] and [15]. Both models were based on the second Fick's Law of Diffusion.…”

Section: Introductionmentioning

confidence: 99%

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Effect of cracking and randomness of inputs on corrosion initiation of reinforced concrete bridge decks exposed to chlorides

Konečný¹,

Lehner²

2016

Frattura Ed Integrità Strutturale

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The paper is aimed at the indicative evaluation of the effect of random scatter of input parameters in case of durability of reinforced concrete bridge deck. The time to onset of corrosion of steel reinforcement of concrete bridge deck exposed to chloride is evaluated. The effect of cracking in concrete onto chloride ingress is considered. The selected steel reinforcement protection strategies are: unprotected steel reinforcement, epoxy-coated steel reinforcement and water-proof barrier bellow asphalt overlay. The preliminary model for damage effect on chloride ion ingress through water proof membrane under penetrable asphalt overlay is used. 2-D finite element chloride ingress model is combined with Monte Carlo simulation technique. The innovative crack effect modeling via highly penetrable elements is applied. Deterministic and probabilistic calculations are compared.Citation: Konecny, P., Lehner, P., Effect of cracking and randomness of inputs on corrosion initiation of reinforced concrete bridge decks exposed to chlorides, Frattura ed Integrità Strutturale, 39 (2017) 29-37.

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Section: D Fea Diffusion Model Taking Into Account the Effects Of Crmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of cracking and randomness of inputs on corrosion initiation of reinforced concrete bridge decks exposed to chlorides

Konečný¹,

Lehner²

2016

Frattura Ed Integrità Strutturale

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“…Preferential pathways for the ingress of deleterious species cause decrease in durability of the structures in question which has a considerable economical impact. In recent years, numerical models taking into account the effect of concrete cracking on the aggressive agents' penetration have been proposed both from the numerical [7,8] and analytical [9,10] standpoint. These models are typically based on T rather significant simplifications concerning description of the physics behind these complex phenomena.…”

Section: Introductionmentioning

confidence: 99%

Electrical resistivity and ultrasonic measurements during sequential fracture test of cementitious composite

Veselý

ný

Lehner³

et al. 2014

Frattura Ed Integrità Strutturale

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Cracks in cover of reinforced and pre-stressed concrete structures significantly influence the ingress of deleterious species causing decrease in durability of these structures. The paper is focused on the effect of fracture process on two selected physical parameters of concrete -the electrical resistivity and the ultrasonic pulse passing time -which might be employed as the quality indicator of concrete cover within (nondestructive) procedure(s) of assessment of the structural durability. The concrete electrical resistivity and ultrasonic passing time were investigated here with respect to two variants of treatment of the test specimens' surface (the pre-dried surface and the wet surface). Test configuration of three-point bending of notched beam was utilized to control the crack propagation; the fracture process passed through several loading-unloading sequences between which the electrical resistivity and ultrasonic passing time readings over the fractured region were performed. Equivalent elastic crack model was used for estimation of the fracture advance (described via the effective crack length) at the loading stages corresponding to the resistivity and ultrasonic measurements. Relationships between changes of both the concrete resistivity and ultrasonic pulse passing time and the effective crack length is determined and discussed.

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“…The pre-requisite is, however, a sufficient database of input quantities including the experience from practical operation because many input quantities cannot be based on models and laboratory measurements only (this being the case, for instance, of geotechnics, see [4]). Those computational methods are used, in particular, when designing the load-carrying systems for underground structures where degradation processes in structures can be also taken into account [8,13]. It is possible to carry out the Performance-Based Design the result of which is structures which consider utility values such as durability, fire resistance, insulation or seismic resistance [9].…”

Section: Introductionmentioning

confidence: 99%

Probabilistic Calculation of Fatigue Crack Progression Using Fcprobcalc Code

Krejsa¹

2012

Transactions of the VŠB - Technical University of Ostrava. Construction Series

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The paper gives examples of the probabilistic assessment of a steel cyclic loaded structure. Fatigue progression of the cracks from the edge and from the surface is used as a basis for proposing a system of inspections of details which tend to be damaged by fatigue. The newly developed method Direct Optimized Probabilistic Calculation (DOProC method) was used for solution. The method was applied in FCProbCalc software. KeywordsDirect Optimized Probabilistic Calculation, DOProC, Safety Margin, Probability of Failure, Fatigue Crack Progression, Inspection of Structure, Random Variable. AbstraktPříspěvek je zaměřen na jeden z možných způsobů posouzení spolehlivosti cyklicky namáhané ocelové konstrukce s ohledem na vznik únavových trhlin z okraje a povrchu, které vede k návrhu systému prohlídek konstrukčních detailů náchylných na únavové poškození. Pro řešení pravděpodobnostní úlohy byla použita nově vyvíjená metoda Přímého Optimalizovaného Pravděpodobnostního Výpočtu (zkráceně POPV), implementovaná do programu FCProbCalc. Klíčová slovaPřímý Optimalizovaný Pravděpodobnostní výpočet, POPV, funkce spolehlivosti, pravděpodobnost poruchy, šíření únavové trhliny, prohlídka konstrukce, náhodná proměnná.

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Performance Evaluation of Concrete Bridge Deck Affected by Chloride Ingress

Cited by 15 publications

References 5 publications

Effect of cracking and randomness of inputs on corrosion initiation of reinforced concrete bridge decks exposed to chlorides

Effect of cracking and randomness of inputs on corrosion initiation of reinforced concrete bridge decks exposed to chlorides

Electrical resistivity and ultrasonic measurements during sequential fracture test of cementitious composite

Probabilistic Calculation of Fatigue Crack Progression Using Fcprobcalc Code

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