Inhibiting property of nitrite intercalated layered double hydroxide for steel reinforcement in contaminated concrete condition

Tian, Yuwan; Wen, Cheng; Gui, Wang; Deng, Peichang; Mo, Wanwan

doi:10.1007/s10800-020-01439-8

Cited by 14 publications

(2 citation statements)

References 74 publications

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“…In the case of LDH loaded with an anion inhibitor, the inhibition response mechanism is based on ion exchange between free chloride ions and the intercalated inhibitive anions in the hydrotalcite matrix and simultaneous release of the inhibitor [6]. In alkaline simulated pore solutions, Cl capture and inhibitor release and inhibition efficiency is shown [3,7,8]. The corrosion inhibition efficiency associated with the inhibitor released from the LDH has also been demonstrated in mortar like in [7,9] with a larger time to corrosion onset due to Cl transport decrease.…”

Section: Encapsulated Inhibitorsmentioning

confidence: 99%

Self-protection concrete measures as prevention measure from chloride transport and corrosion of reinforcement

et al. 2023

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Incorporation of additives into a reinforced concrete matrix to delay or even completely avoid the initiation of corrosion during the service-life of the construction is a widely pursued topic. One of the new promising technologies achieving increased interest is to incorporate corrosion inhibitors encapsulated in layered double hydroxide (LDH). LDH structures follow a controlled release of the inhibitor while chloride is efficiently trapped at the same time. Another type of nanostructure additive offering self-protection ability in concrete is polyhedral oligomeric silsesquioxanes (POSS) developed to exhibit water-repellent functionalities protecting the reinforcement from corrosive attack. In the present laboratory work, the enhanced performance of concrete infrastructures in a marine environment was studied using a SCC design. The addition of LDH (0.5, 1 and 2 % by mass of binder (bmb)) and POSS (2 and 4 % additive level) was explored. Migration and diffusion Cl transport tests have been performed towards corrosion protection of reinforcing bars. The results showed that Cl transport decreases with the concrete maturity, and this is even more effective for concretes with LDH and POSS. This delay effect is more pronounced in the unidirectional diffusional Cl transport. LDH is significantly retarding the initiation of rebar corrosion.

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Section: Encapsulated Inhibitorsmentioning

confidence: 99%

Self-protection concrete measures as prevention measure from chloride transport and corrosion of reinforcement

et al. 2023

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“…This has the potential to give long-term corrosion protection. Various corrosion inhibitors have been incorporated as the anionic species within LDHs, and these include inorganic compounds such as molybdate [100][101][102][103], permanganate [104], nitrate [105][106][107], nitrite [77,108,109], phosphate [62], phenylphosphonate [110] and vanadate [111][112][113]. Also, organic inhibitors such as benzoate, 3-aminopropyltriethoxysilane, 8-hydroxyquinoline [63], 5-aminoindazole [90], benzotriazole [114], mercaptobenzothiazole [96,115,116], 2-mercaptobenzothiazole [117], thiophene derivatives [118], aspartic acid [119], 8-hydroxyquinoline [120], triazoles [121], α-amino acids [122] and 2-benzothiazolylthio-succinate [123] have been incorporated as the anionic species in LDHs.…”

Section: Layered Double Hydroxidesmentioning

confidence: 99%

Emerging Layered Materials and Their Applications in the Corrosion Protection of Metals and Alloys

et al. 2022

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Metals and alloys are essential in modern society, and are used in our daily activities. However, they are prone to corrosion, with the conversion of the metal/alloy to its more thermodynamically-favored oxide/hydroxide phase. These undesirable corrosion reactions can lead to the failure of metallic components. Consequently, corrosion-protective technologies are now more important than ever, as it is essential to reduce the waste of valuable resources. In this review, we consider the role of emerging 2D materials and layered materials in the development of a corrosion protection strategy. In particular, we focus on the materials beyond graphene, and consider the role of transition metal dichalcogenides, such as MoS2, MXenes, layered double hydroxides, hexagonal boron nitride and graphitic carbon nitride in the formulation of effective and protective films and coatings. Following a short introduction to the synthesis and exfoliation of the layered materials, their role in corrosion protection is described and discussed. Finally, we discuss the future applications of these 2D materials in corrosion protection.

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Monitoring of the interaction of calcium phosphate cement and lidocaine hydrochloride by electrochemical impedance spectroscopy during the drug release process

Pasqual

Pereira

Colpo³

et al. 2021

J Appl Electrochem

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Inhibiting property of nitrite intercalated layered double hydroxide for steel reinforcement in contaminated concrete condition

Cited by 14 publications

References 74 publications

Self-protection concrete measures as prevention measure from chloride transport and corrosion of reinforcement

Self-protection concrete measures as prevention measure from chloride transport and corrosion of reinforcement

Emerging Layered Materials and Their Applications in the Corrosion Protection of Metals and Alloys

Monitoring of the interaction of calcium phosphate cement and lidocaine hydrochloride by electrochemical impedance spectroscopy during the drug release process

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