Evaluation of concrete durability due to carbonation in harbor concrete structures

Han, Seol‐Heui; Park, Woo-Sun; Yang, Eun Ik

doi:10.1016/j.conbuildmat.2013.07.057

Cited by 52 publications

(32 citation statements)

References 9 publications

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“…Figures 2a, 2b and 3 show the outcomes of the analysis of variance of the k T coefficient (TPT) performed on models according to (1) through (3) as standardised assessments of the effects. A standardised assessment of the effect is in the case of this application test statistic -if it exceeds 0.05 on the level of significance, it can be assumed that the given factor (or interaction of factors) has a statistically significant influence on the output quantity y.…”

Section: (3)mentioning

confidence: 99%

“…A low permeability of the surface layer ensures a greater resistance to carbonation and entery of chlorides and other outside intrusions. [1][2][3] These phenomena cause, among other things, corrosion of the steel reinforcement in concrete and thus its overall degradation. 4,5 It is known that the quality of concrete is determined by the correct composition of fresh concrete and thus by the amount of cement, water and other additives and admixtures.…”

Section: Introductionmentioning

confidence: 99%

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Statistical view of evaluating concrete-surface-layer permeability tests in connection with changes in concrete formula

Misák¹,

Stavař²,

Rozsypalová³

et al. 2017

Mater. Tehnol.

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Concrete is one of the most common building materials and its durability has been observed with increased attention. It can be said that concrete durability is closely connected with permeability and, generally speaking, the quality of its surface layer. Evaluating the quality of the surface layer of concrete is a rather difficult issue that can be addressed in different ways. The authors of this paper focus on three internationally used methods -TPT, GWT and ISAT. The paper sums up the results of the experiment whose goal was to investigate the influence of concrete composition on the outputs of the above-mentioned methods. For the purposes of the experiment, specimens were made using 9 mixtures, which differed only in the amount of cement and plasticiser, i.e., the water/cement ratio. The experiment was designed and evaluated using the statistical methodology DOE (Design of Experiment). Next, the paper discusses a new view of the statistical evaluation of the test results of the methods described above. Keywords: concrete, permeability, durability, design of experiment Beton je eden najbolj uporabljanih materialov v gradbeni{tvu in njegova zdr`ljivost se prou~uje z veliko pozornostjo. Lahko se re~e, da je zdr`ljivost betona tesno povezana s prepustnostjo, na splo{no s kvaliteto njegove povr{inske plasti. Ocena kvalitete povr{inske plasti betona je precej komplicirano vpra{anje, h kateremu se lahko pristopi na razli~ne na~ine. Avtorji tega~lanka se osredoto~ajo na tri mednarodno priznane metode -TPT, GWT in ISAT.^lanek povzema rezultate preizkusa, katerega cilj je bil prou~evati vpliv sestave betona na rezultate zgoraj omenjenih metod. Za namene preizkusa so bili vzorci izdelani iz 9 me{anic, ki so se razlikovale samo v koli~ini cementa in plastifikatorja, to je razmerja voda/cement. Preizkusi so bili postavljeni in ocenjeni s statisti~no metodologijo DOE (angl. Design of Experiment). Nadalje~lanek obravnava nov pogled na statisti~no oceno rezultatov preizkusa in zgoraj opisanih metod.

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Section: (3)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Statistical view of evaluating concrete-surface-layer permeability tests in connection with changes in concrete formula

Misák¹,

Stavař²,

Rozsypalová³

et al. 2017

Mater. Tehnol.

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show abstract

“…www.mdpi.com/journal/sustainability Sustainability 2017, 9, 157 2 of 15 aforementioned studies [4][5][6][7] is the effect of factors attributed to climate change, such as increases in the CO 2 budget or changes in temperature.…”

Section: Introductionmentioning

confidence: 99%

“…Jiang et al [3] proposed a mathematical model for the carbonation depth of HVFA concrete by considering mixing proportions, curing periods, and environmental conditions. Han et al [4] evaluated carbonation depth and probability of corrosion initiation in harbor concrete structures. Taffese et al [5] evaluated the carbonation depth by using machine learning methods that consisted of neural networks, decision trees, and ensemble methods.…”

Section: Introductionmentioning

confidence: 99%

“…To address the drawbacks in the current models [3][4][5][6][7][8][9][10][11][12][13][14][15], this study presents a probabilistic approach that predicts the service life of concrete structures subjected to carbonation-induced corrosion. The effects of concrete material properties, curing conditions, and climate change on service life are considered.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Climate Change on Service Life of High Volume Fly Ash Concrete Subjected to Carbonation—A Korean Case Study

Park

Wang

2017

Sustainability

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Abstract:The increase in CO 2 concentrations and global warming will increase the carbonation depth of concrete. Furthermore, temperature rise will increase the rate of corrosion of steel rebar after carbonation. On the other hand, compared with normal concrete, high volume fly ash (HVFA) concrete is more vulnerable to carbonation-induced corrosion. Carbonation durability design with climate change is crucial to the rational use of HVFA concrete. This study presents a probabilistic approach that predicts the service life of HVFA concrete structures subjected to carbonation-induced corrosion resulting from increasing CO 2 concentrations and temperatures. First, in the corrosion initiation stage, a hydration-carbonation integration model is used to evaluate the contents of the carbonatable material, porosity, and carbonation depth of HVFA concrete. The Monte Carlo method is adopted to determine the probability of corrosion initiation. Second, in the corrosion propagation stage, an updated model is proposed to evaluate the rate of corrosion, degree of corrosion for cover cracking of concrete, and probability of corrosion cracking. Third, the whole service life is determined considering both corrosion initiation stage and corrosion propagation stage. The analysis results show that climate change creates a significant impact on the service life of durable concrete.

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Electrical Resistivity and Carbonation Front of LC3 Concretes Incorporating Different Supplementary Cementitious Materials

Balestra

Savaris

Schneider

et al. 2023

Building Pathology and Rehabilitation

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Evaluation of concrete durability due to carbonation in harbor concrete structures

Cited by 52 publications

References 9 publications

Statistical view of evaluating concrete-surface-layer permeability tests in connection with changes in concrete formula

Statistical view of evaluating concrete-surface-layer permeability tests in connection with changes in concrete formula

Effect of Climate Change on Service Life of High Volume Fly Ash Concrete Subjected to Carbonation—A Korean Case Study

Electrical Resistivity and Carbonation Front of LC3 Concretes Incorporating Different Supplementary Cementitious Materials

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