Experimental Studies on Effects of Sodium Citrate, Calcium Nitrite and Hexamine as Corrosion Inhibitor in Concrete

Quraishi, MA

doi:10.4172/2472-0437.1000117

Cited by 6 publications

(8 citation statements)

References 11 publications

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“…It may be concluded that sodium citrate was the component of most single significance but that its use may also have led to a series of additional complex reactions resulting in far greater retardation than when used alone. As observed earlier, the retarding effect of sodium citrate was likely due to the adsorption of citrate ions on the cement particles by complexation with calcium ions, which prevents access to water [34,35,36].…”

Section: Resultsmentioning

confidence: 98%

Effect of Microbiological Growth Components for Bacteria-Based Self-Healing on the Properties of Cement Mortar

2019

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Previous studies of bacteria-based self-healing concrete have shown that it is necessary to encapsulate and separate the self-healing ingredients (bacteria, nutrients, and precursors) in the concrete so that when a crack forms, capsules rupture, which allows the self-healing ingredients to come together and precipitate calcite into the crack. Because of the shearing action in the concrete mixer, there is a chance that these capsules, or other carriers, may rupture and release the self-healing ingredients. This would affect the efficiency of self-healing, but may detrimentally affect the concrete’s properties. This work investigated the effects of multi-component growth media, containing germination and sporulation aids for the bacterial aerobic oxidation pathway, on the basic properties of fresh and hardened concrete instead of the potential self-healing efficiency in a structural service. Tests were carried out to measure the effects of growth media on air content, fluidity, capillary absorption, strength development of cement mortar following corresponding standards, hydration kinetics, setting properties, and the microstructure of cement paste, according to certain specifications or using specific machines. The research has demonstrated that a multi-constituent growth media will not have a significant effect on the properties of concrete in the proportions likely to be released during mixing. This important conclusion will allow further development of these novel materials by removing one of the key technical barriers to increased adoption.

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Section: Resultsmentioning

confidence: 98%

Effect of Microbiological Growth Components for Bacteria-Based Self-Healing on the Properties of Cement Mortar

2019

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“…Corrosion inhibitors are charactedized in following types: Cathodic, Anodic and Mixed, depending on whether they hinder the corrosion reaction at the anodic or cathodic sites or whether both are involved [5,35].…”

Section: Types Of Inhibitorsmentioning

confidence: 99%

“…Quraishi et al [43] studied the effect of sodium citrate, calcium nitrate, and hexamine on corrosion of steel. In this study, they reported the effect of inhibitor on normal consistency of cement, initial and final setting time of cement, compressive strength of cement, soundness of cement and compressive strength of concrete .The results of the study also concluded that hexamine and calcium nitrite are more efficient inhibitor.…”

Section: Mixed Inhibitorsmentioning

confidence: 99%

Corrosion of Reinforced Steel in Concrete and Its Control: An overview

Quraishi¹,

Nayak²,

Kumar³

et al. 2017

J Steel Struct Constr

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Reinforced concrete structures show a very good durability as it is capable of withstanding the different kind of environmental exposure. However, the main limitation of concrete, even of good quality, is that the penetration of chlorides, carbon dioxide (CO 2 ), moisture, etc., can cause the corrosion of reinforcement bars (rebars). Corrosion of structure can be reduced by proper monitoring and taking suitable control measures at the proper time interval. Detailed review of corrosion of reinforced steel in concrete and its control has been studied and are presented in this paper.

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“…In the presence of CNI, concrete setting times could be delayed (M.A. Quraishi, et. al., 2016;Hansson C.M.…”

Section: Introductionmentioning

confidence: 99%

“…Because CNI could modify the setting time and hydration rate of a cementitious matrix (M.A. Quraishi, et al, 2016;Hansson C.M. et al, 1998), it is expected that the internal curing method with SAP could decrease these mentioned effects.…”

mentioning

confidence: 99%

Synergetic effect of a super-absorbent polymer and a calcium nitrite corrosion inhibitor in high performance concrete durability

Herrera

Canul-Polanco

Dávila-Pompermaye

et al. 2020

Revista de la Asociación Latinoamericana de Control de Calidad,

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In this research, the synergetic effect of a super-absorbent polymer in combination with a calcium nitrite corrosion inhibitor were evaluated as a combined technology to improve concrete durability in High Performance Concrete. For this purpose, Portland cement mortars with a water/cement ratio of 0.4 and a substitution of 9.5% of cement by silica fume were produced. The effect of this technologies was evaluated by measuring the following parameters: autogenous and drying shrinkage, surface electrical resistivity and the non-steady-state chloride migration coefficient. The results indicate that the synergistic effect of SAP + CNI improves autogenous shrinkage and surface electrical resistivity.

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Experimental Studies on Effects of Sodium Citrate, Calcium Nitrite and Hexamine as Corrosion Inhibitor in Concrete

Cited by 6 publications

References 11 publications

Effect of Microbiological Growth Components for Bacteria-Based Self-Healing on the Properties of Cement Mortar

Effect of Microbiological Growth Components for Bacteria-Based Self-Healing on the Properties of Cement Mortar

Corrosion of Reinforced Steel in Concrete and Its Control: An overview

Synergetic effect of a super-absorbent polymer and a calcium nitrite corrosion inhibitor in high performance concrete durability

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