Testing phosphate ions as corrosion inhibitors for construction steel in mortars

Yohai, L.; Valcarce, M.B.; Vázquez, M.

doi:10.1016/j.electacta.2015.12.124

Cited by 60 publications

(29 citation statements)

References 42 publications

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“…Reinforced concrete structures are widely used ascribed to their excellent structural performance . Nevertheless, degradation of concrete structure induced by steel rebar corrosion has been a serious problem world‐wide, which causes heavy economic burden on the governments.…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, degradation of concrete structure induced by steel rebar corrosion has been a serious problem world‐wide, which causes heavy economic burden on the governments. As is reported, it costs more than 20 billion dollar to repair and rehabilitate the highway and bridges annually in the USA and more than 600 million pound in the UK . Application of rebar inhibitors during the concrete casting process is considered to be one of the most effective and economical solutions to suppress the corrosion of reinforcement and has been used in more and more countries .…”

Section: Introductionmentioning

confidence: 99%

“…Reinforced concrete structures are widely used ascribed to their excellent structural performance. 18 Nevertheless, degradation of concrete structure induced by steel rebar corrosion has been a serious problem world-wide, which causes heavy economic burden on the governments. As is reported, it costs more than 20 billion dollar to repair and rehabilitate the highway and bridges annually in the USA and more than 600 million pound in the UK.…”

Section: Introductionmentioning

confidence: 99%

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pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Feng

Yang

Dong

et al. 2017

J of Applied Polymer Sci

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The waste problem of the rebar inhibitors is very serious due to that it is a long time before they can exert their best effect in the concrete and they are kept losing all the time. However, there is still no effective solution to alleviate such situation. Meanwhile, drug delivery control technology based on environmental sensitive polymers has been successfully applied in biomedical fields. Thus, poly(acrylic acid)–acrylamide was synthesized as smart carrier for controlling rebar inhibitors delivery in concrete. Dipotassium hydrogen phosphate as model drug was encapsulated inside the polymeric particles via a self‐assembly process. The pH‐responsive activities of the polymeric particles were estimated by monitoring their swelling performances in solutions of different pH values and the drug delivery control characteristics were studied in simulated concrete pore solutions. The results indicate the polymeric particles deserve network structures with high porosity and exhibit excellent pH‐responsive activities, which can perform as perfect intelligent carriers whereas the releasing of the inhibitors follows the first‐order kinetic law. The work suggests a new application field of drug delivery control technology. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45886.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Feng

Yang

Dong

et al. 2017

J of Applied Polymer Sci

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“…It has been reported that carboxylate and amino alcohol-based corrosion inhibitors show dual actions in concrete as the amines and alkanol amines adsorb on the metal surface and form a protective film against chloride [58,59], whereas the carboxylate ester compound reacts with calcium hydroxide, precipitates and blocks the pores of the concrete. This pore blocking property is said to be a secondary protection mechanism against reinforcement corrosion [16,18,44,58]. Furthermore, another study reported that some organic inhibitors adsorb better on the iron surface in the active state than in the passive state [60].…”

Section: Effect Of Organic Inhibitors In Concrete 21 Admixed Vs MImentioning

confidence: 99%

“…Yohai et al [43,44] reported that the phosphate ions behaved as a mixed type inhibitor. Soluble phosphate compounds, such as disodium phosphate or mono fluoro phosphate, can be mixed with mortar or applied on concrete [42] by immersion or by surface application [45].…”

Section: Effect Of Anodic Cathodic and Mixed Inhibitors In Concretementioning

confidence: 99%

Corrosion Inhibitors for Reinforced Concrete: A Review

Lee¹,

Saraswathy²,

Kwon³

et al. 2018

Corrosion Inhibitors, Principles and Recent Applications

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The objective of the topic is to review the recent trends in corrosion inhibitors for reinforced concrete and their application in the laboratory and field conditions. Inhibitors are chemical substances which when added to the concrete in small concentrations will inhibit or prolong the time to initiation of corrosion in concrete structures. This chapter focuses on the type of inhibitors used in concrete based upon their mode of action and the way of application. The section deals with anodic, cathodic, mixed inhibitors; performance of admixed inhibitor vs. migrating/surface applied inhibitor and their evaluation studies; and electrochemical injection of corrosion inhibitor (EICI) in concrete and electrochemical chloride extraction techniques has been reviewed.

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Adsorption, Thermodynamic, and Experimental Studies of Corrosion Inhibitor of Tin in 0.2 M Maleic Acid by Hydrogen Phosphate Ions (HPO₄²⁻)

Addi

Shaban

et al. 2020

Electroanalysis

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The inhibition efficiency of H2PO42− ions against tin corrosion in 0.2 M maleic acid is studied using electrochemical methods, surface analytical methods, and thermodynamic analysis. The potentiodynamic polarization plots showed the presence of an active/passive transition state of the tin electrode. The EIS measurements confirmed that the inhibition efficiency of H2PO42− increased by increasing the concentration (η=81 % at Cinh=2.10−2 M) and decreased by rising the temperature. The polarization tests demonstrated that the inhibitor performs as a cathodic‐type. The adsorption of the inhibitor was spontaneous and followed the Langmuir adsorption isotherm. A model of the inhibition mechanism was suggested.

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Testing phosphate ions as corrosion inhibitors for construction steel in mortars

Cited by 60 publications

References 42 publications

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Corrosion Inhibitors for Reinforced Concrete: A Review

Adsorption, Thermodynamic, and Experimental Studies of Corrosion Inhibitor of Tin in 0.2 M Maleic Acid by Hydrogen Phosphate Ions (HPO₄²⁻)

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Testing phosphate ions as corrosion inhibitors for construction steel in mortars

Cited by 60 publications

References 42 publications

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

pH‐sensitive polymeric particles as smart carriers for rebar inhibitors delivery in alkaline condition

Corrosion Inhibitors for Reinforced Concrete: A Review

Adsorption, Thermodynamic, and Experimental Studies of Corrosion Inhibitor of Tin in 0.2 M Maleic Acid by Hydrogen Phosphate Ions (HPO42−)

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Product

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Adsorption, Thermodynamic, and Experimental Studies of Corrosion Inhibitor of Tin in 0.2 M Maleic Acid by Hydrogen Phosphate Ions (HPO₄²⁻)