Service life of GGBFS concrete under carbonation through probabilistic method considering cold joint and tensile stress

Yoon, Yong-Sik; Yang, Keun–Hyeok; Kwon, Seung-Jun

doi:10.1016/j.jobe.2020.101826

Cited by 7 publications

(3 citation statements)

References 13 publications

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“…[11][12][13][14][15] The effect of concrete joints on carbonation and chloride diffusion, however, has so far only received marginal attention. [16][17][18] Additionally, the durability of concrete repair was found to be influenced by surface contamination prior repairing. [19][20][21][22][23] This issue, with few exceptions, 24,25 does not regard the influence of concrete joints acting as pathways for water and other harmful substances, which is the case, for example, for hydraulic structures, where joints are required for the sectional construction method.…”

Section: Introductionmentioning

confidence: 99%

“…Past research has focused on crack development over time, or debonding, and its influencing factors, 6,7 with special consideration of differential shrinkage 8–10 and freeze–thaw cycles (FTC) 11–15 . The effect of concrete joints on carbonation and chloride diffusion, however, has so far only received marginal attention 16–18 . Additionally, the durability of concrete repair was found to be influenced by surface contamination prior repairing 19–23 .…”

Section: Introductionmentioning

confidence: 99%

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Experimental methods for the analysis of the durability behavior of concrete joints

Höffgen

Mohs

Lamparter

et al. 2022

Structural Concrete

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This article addresses the applicability of experimental methods for the evaluation of concrete durability on localized structural weaknesses posed by joints. Three different types of exposure are analyzed: chloride penetration, carbonation, and freeze-thaw attack. First, established experimental methods for the characterization of the durability of plain concrete are presented and their general applicability on concrete joints is discussed. The experimental program focuses on the execution of selected tests on laboratory specimens with and without joints. Indicator tests for both chloride penetration and carbonation are generally feasible, but require attention to specimen preparation. Rapid chloride migration yielded inconclusive results, while uniaxial chloride diffusion coefficient of concrete joints cannot be determined because of the areal extent of profile grinding. For the same reason, the characterization of the resistance to freeze-thaw cycles through surface deterioration is not applicable for concrete joints. The structural damage was instead successfully qualified through direct tension tests.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Experimental methods for the analysis of the durability behavior of concrete joints

Höffgen

Mohs

Lamparter

et al. 2022

Structural Concrete

View full text Add to dashboard Cite

show abstract

“…From the literature, construction joint is also a kind of cold joint (Yoon et al, 2020). Kara (2021) conducted strength and durability tests on concrete with cold joints and found that after dry-wet cycles, the weight loss of concrete with cold joints was greater than that of the monolithic concrete sample, and the tensile strength loss rate was 42.07%.…”

Section: Introductionmentioning

confidence: 99%

Comparative experiment of steel bar corrosion at concrete construction joints

Huang¹,

Wu²,

Shen

et al. 2022

Front. Mater.

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Introduction: Construction joint is common and even inevitable in most of the reinforcement concrete structures. This study was to assess the effect of construction joints on chloride-induced corrosion of reinforcing steel in concrete.Methods: Test parameters included two environmental conditions (salt solution immersion condition and cyclic wet-dry condition), two forms of construction joint (direct wet joint and roughened wet joint) and four types of steel bar (mild steel bar, ferritic stainless-steel bar, austenitic-ferritic stainless-steel bar and epoxy-coated steel bar). The corrosion test of 90 specimens was carried out by electrochemical accelerated corrosion method. The weight loss of each steel bar and steel bar section in specimens was measured. An influence coefficient (k_j) of construction joint on local weigh loss of steel bars was defined.Results: Except for epoxy-coated steel bars, the most severe corrosion of experimental steel bars in concrete specimens all occurred at the joints, while the corrosion in non-joint sections of steel bars was relatively uniform and less. The weight loss rate of specimens has the range of 1.18% to 15.73% with an average value of 6.22%. The average k_j of mild steel bars, S11203 stainless steel bars, and S23043 stainless steel bars are 1.38, 1.92, and 1.97, respectively. The average k_j of specimens in immersion condition and cyclic wet-dry condition are 1.44 and 2.07. The corrosion of epoxy-coated steel bars mainly occurred at the damage locations of epoxy coating, not mainly at the joints.Conclusion: Chloride-induced corrosion of steel bars at construction joints was always more severe than at non-joints, especially in cyclic wet-dry environments, even for stainless-steel bar, but epoxy-coated steel bars were excluded.

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Structural behavior of RC jointed beams using recycled steel fiber and hybrid dowel bars

Naser,

Almamoori

et al. 2024

J Build Rehabil

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Service life of GGBFS concrete under carbonation through probabilistic method considering cold joint and tensile stress

Cited by 7 publications

References 13 publications

Experimental methods for the analysis of the durability behavior of concrete joints

Experimental methods for the analysis of the durability behavior of concrete joints

Comparative experiment of steel bar corrosion at concrete construction joints

Structural behavior of RC jointed beams using recycled steel fiber and hybrid dowel bars

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