Experimental study on thermo-chemical phenomena during interaction of limestone concrete with liquid sodium under inert atmosphere

Das, Sanjay; Sharma, Anil Kumar; Parida, F.C.; Kasinathan, N.

doi:10.1016/j.conbuildmat.2009.06.021

Cited by 10 publications

(5 citation statements)

References 2 publications

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“…m n p (7) Using SB(−0.52, 1.18, 0.92), the perfect fit, characterized by a determination coefficient (R 2 ) better than 0.9999, was achieved. Subsequently, the fitting of the kinetic model function derived on the basis of the physicogeometrical reaction model was examined by setting the fitting result using SB(m, n, p) as an index.…”

Section: Resultsmentioning

confidence: 99%

“…Notably, the chemical, physical, and mechanical events during the SCR occur under self-generated conditions caused by the SCR. To understand the overall SCR, the specific phenomena of the SCR in each reaction mode for different concrete materials under different conditions have been investigated from chemical, physical, and mechanical viewpoints, − and this could be the basis to establish a sophisticated safety assessment of the next-generation SFRs.…”

Section: Introductionmentioning

confidence: 99%

“…Besides the siliceous concrete majorly used for SFR in Japan, limestone concrete has been widely used in different countries. Several previous studies of SCR focused on the liquid Na–limestone concrete reaction. − ,,, Because CaCO 3 is the aggregate and cement component in the limestone concrete, the liquid Na–CaCO 3 reaction is one of the key reactions for evaluating and simulating the overall SCR. …”

Section: Introductionmentioning

confidence: 99%

“…Several previous studies of SCR focused on the liquid Na− limestone concrete reaction. [1][2][3]6,7,12 Because CaCO 3 is the aggregate and cement component in the limestone concrete, the liquid Na−CaCO 3 reaction is one of the key reactions for evaluating and simulating the overall SCR.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Koga

Kikuchi

2022

Ind. Eng. Chem. Res.

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In this study, we characterized the kinetic features of the thermally stimulated reaction of CaCO 3 with liquid Na as a model process of the liquid Na−structural concrete reaction that possibly occurs under a postulated severe accident in a Na-cooled fast reactor. Two sampling conditions characterized by the dispersion of CaCO 3 powders in liquid Na and the limited contact of liquid Na with the CaCO 3 pellet surface were applied to investigate the kinetics and physicogeometrical mechanism of the liquid Na−CaCO 3 reaction using differential scanning calorimetry (DSC) and morphological observations of the products. Under both sampling conditions, the exothermic liquid Na−CaCO 3 reaction started at the initial contact area of the reactants and proceeded while liquid Na penetrated the CaCO 3 powder and pellet, exhibiting the apparent multistep reaction behaviors. Because of the changes in the geometrical constraints of the liquid Na and CaCO 3 contact induced by different thermal and mechanical events in the reacting system, only the initial reaction step at the initial contact area of the liquid Na and CaCO 3 surface exhibited acceptable repeatability to characterize the kinetic behavior. The kinetic information of the first reaction step was extracted from the exothermic DSC peak for the overall reaction using advanced kinetic approaches to the multistep process, providing the kinetic parameters supported by the defined physicogeometrical scheme of the reaction to be used for simulating the liquid Na−CaCO 3 reaction.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Koga

Kikuchi

2022

Ind. Eng. Chem. Res.

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“…These materials occupy numerous valuable land resources and pollute the environment. Therefore, incorporating these three admixtures into cement or concrete could reduce waste products and save expenses related to cement production [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Study on Strength and Microstructure of Cement-Based Materials Containing Combination Mineral Admixtures

Rao

Wei

Gao

et al. 2016

Advances in Materials Science and Engineering

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The compressive strength of complex binders containing two or three blended mineral admixtures in terms of glass powder (GP), limestone powder (LP), and steel slag powder (SP) was determined by a battery solution type compressive testing machine. The morphology and microstructure characteristics of complex binder hydration products were also studied by microscopic analysis methods, such as XRD, TG-DTA, and SEM. The mechanical properties of the cement-based materials were analyzed to reveal the most appropriate mineral admixture type and content. The early sample strength development with GP was very slow, but it rapidly grew at later stages. The micro aggregate effect and pozzolanic reaction mutually occurred in the mineral admixture. In the early stage, the micro aggregate effect reduced paste porosity and the small particles connected with the cement hydration products to enhance its strength. In the later stage, the pozzolanic reaction of some components in the complex powder occurred and consumed part of the calcium hydroxide to form C-S-H gel, thus improving the hydration environment. Also, the produced C-S-H gel made the structure more compact, which improved the structure’s strength.

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Performance Indices of Hot Liquid Sodium-Exposed Sacrificial Surface Layers in Fast Breeder Reactors

Haneefa

Santhanam

Parida

2018

Lecture Notes in Mechanical Engineering

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Experimental study on thermo-chemical phenomena during interaction of limestone concrete with liquid sodium under inert atmosphere

Cited by 10 publications

References 2 publications

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Study on Strength and Microstructure of Cement-Based Materials Containing Combination Mineral Admixtures

Performance Indices of Hot Liquid Sodium-Exposed Sacrificial Surface Layers in Fast Breeder Reactors

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Experimental study on thermo-chemical phenomena during interaction of limestone concrete with liquid sodium under inert atmosphere

Cited by 10 publications

References 2 publications

Thermally Stimulated Liquid Na–CaCO3 Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Thermally Stimulated Liquid Na–CaCO3 Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Study on Strength and Microstructure of Cement-Based Materials Containing Combination Mineral Admixtures

Performance Indices of Hot Liquid Sodium-Exposed Sacrificial Surface Layers in Fast Breeder Reactors

Contact Info

Product

Resources

About

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors

Thermally Stimulated Liquid Na–CaCO₃ Reaction: A Physicogeometrical Kinetic Approach toward the Safety Assessment of Na-Cooled Fast Reactors