Chloride ions migration and induced reinforcement corrosion in concrete with cracks: A comparative study of current acceleration and natural marine exposure

Du, Fengyin; Jin, Zuquan; She, Wei; Xiong, Chuansheng; Feng, Guangyan; Jiang, Fan

doi:10.1016/j.conbuildmat.2020.120099

Cited by 51 publications

(14 citation statements)

References 29 publications

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“…Some of the slabs had a greater steel bar mass loss, and the L3 family had the second highest loss percentage. For higher levels of mass loss, it is expected that a greater amount of corrosion products will be formed and this will appear more intensely on the surface of the slabs, as seen in the study by Du et al, (2020). However, the result of some of the plates, with regard to the corrosion process and staining was contrary to expectations.…”

Section: Resultsmentioning

confidence: 72%

“…Cellular concrete is another type of low-density material, which is the main object of study in this paper, where it has been produced with additives that produce air bubbles within the concrete, decreasing its specific mass (Stumm;Schweike;Stemmermann, 2018;Trong;Asamoto;Matsui, 2018;He et al, 2018;He et al, 2019). Considering the many uses of cellular concrete because of to its lightness and lower specific weight, there is concern regarding the use of this material for reinforced concrete structural members, due to its potential behavior with regard to the propagation of steel reinforcement corrosion from the number of voids within the material and its lower mechanical strength (Du et al, 2020). Concrete durability is an essential issue, as it makes it possible to understanding a material's performance throughout a structure's lifetime (Kashani et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

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Influence of the void ratio of cellular concrete on the corrosion of steel reinforcement

Nascimento¹,

Filho

Silva

et al. 2022

Revista de la Asociación Latinoamericana de Control de Calidad,

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The objective of this study was to understand whether voids intensify the triggering of reinforcement corrosion in cellular concrete, for slabs with light specific masses. The methodology was based on four tests: visual inspection, corrosion potential, electrical resistivity, and mass loss. In relation to the L1 family, the L2 and L3 families (higher air content) were shown to be more susceptible to reinforcement corrosion and mass loss from the steel bars in 90% of cases. However, the behavior of some slabs indicates the possibility of the process being asymptomatic with regard to staining, considering that the influence of the cover on the corrosion of the steel bars was verified

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Section: Resultsmentioning

confidence: 72%

Section: Introductionmentioning

confidence: 99%

Influence of the void ratio of cellular concrete on the corrosion of steel reinforcement

Nascimento¹,

Filho

Silva

et al. 2022

Revista de la Asociación Latinoamericana de Control de Calidad,

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“…The corrosion risk of rebar in RC structures can be determined in terms of current density if the passivation film is damaged. According to Faraday's law [39], the corrosion velocity can be expressed as the following:…”

Section: Prediction Model For Corrosion Propagationmentioning

confidence: 99%

Service Life Prediction and Lateral Bearing Capacity Analysis of Piles Considering Coupled Corrosion-Temperature Deterioration Processes

Chen

Shao

et al. 2021

JMSE

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High temperatures can enhance the chloride diffusion coefficient and this poses a threat to reinforced concrete (RC) piles. This study intends to propose predictive models that can evaluate the service life and lateral bearing behaviour of reinforced concrete piles subjected to marine environments and varying temperatures. The models show that temperature can accelerate the diffusion rate of chloride and increase the concentration of free chloride in concrete. The distribution law of chloride concentration is obtained by considering the ageing effect as well. Deterministic and probabilistic models are proposed to assess the time to corrosion initiation and propagation. The stiffness degradation coefficient is introduced in the analysis of the lateral bearing capacity of RC piles. The results show that high temperature can decrease the service life of piles and the life spans obtained from deterministic and probabilistic methods are similar; however, the predictions of the latter are more conservative. Temperature can enhance the current density and boost corrosion products, which leads to pile cracking. The rust appearing on the steel surface would make the stiffness degradation coefficient drop sharply. The lateral bearing capacity analysis is conducted from the perspectives of shear force, displacement and bearing moment of the piles.

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“…[54][55][56][57] Various studies have implied that corrosion in concrete structure was mainly caused due the development of cracks and the rate of corrosion increased with an increase in the width of cracks. [58][59][60][61] By the assimilation of stone slurry in the concrete mix, microstructure of the concrete densified [62][63] thereby, leading to a substantial reduction in the pore size and volume. 64 Li and Kwan 65 described that addition of stone slurry in concrete substantially primed to an increment in the strength of samples and helped in reducing the shrinkage and amount of heat that was generated.…”

Section: Impact Of Stone Slurry On the Properties Of Concretementioning

confidence: 99%

Effect of Kota Stone Slurry Powder in Fresh and Hardened Concrete: A Review

Ojha

Gupta

2021

Mat. Sci. Res. India

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Concrete is highly used construction material with cement being its major ingredient. Also, the demand for good quality of concrete is increasing because of the fast-growing urbanization. But there are certain problems associated with the manufacturing of cement. One of the major problems being production of carbon dioxide causing pollution in environment, the manufacturing of cement is quite expensive and it also leads to the depletion of resources. In order to curtail the consumption of cement, it has become inevitable to replace cement by certain amount with substituent materials that are cheaper to produce in order to lower down the financial cost of concrete production by some extent. The review paper, elaborates many properties of concrete by the inclusion of Kota stone slurry after evaluating several research papers. The following paper discusses numerous properties of concrete including workability, compressive strength, split tensile strength, water absorption and modulus of elasticity. The paper demonstrates that when used appropriately, inclusion of Kota stone slurry in concrete had a positive impact on concrete by increasing the strength and durability.

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Chloride ions migration and induced reinforcement corrosion in concrete with cracks: A comparative study of current acceleration and natural marine exposure

Cited by 51 publications

References 29 publications

Influence of the void ratio of cellular concrete on the corrosion of steel reinforcement

Influence of the void ratio of cellular concrete on the corrosion of steel reinforcement

Service Life Prediction and Lateral Bearing Capacity Analysis of Piles Considering Coupled Corrosion-Temperature Deterioration Processes

Effect of Kota Stone Slurry Powder in Fresh and Hardened Concrete: A Review

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