A calorimetric study of hydration of magnesia-ferriferous slag mechanically activated in air and in CO2 atmosphere

Калинкин, А. М.; Гуревич, Б. И.; Myshenkov, Mikhail S.; Калинкина, Е. В.; Zvereva, Irina A.

doi:10.1007/s10973-018-7439-9

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…The material is glassy in nature and latently hydraulic, and its use in mortar and concrete has been specified by various standards. Its chemical composition can vary between different sources [31,32,33,34]. Mixing of finely ground blast furnace slag (GBFS) with cement results in physical and chemical effects.…”

Section: Introductionmentioning

confidence: 99%

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

et al. 2019

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This work deals with the influence of zinc on cement hydration. The amount of zinc in cement has increased over recent years. This is mainly due to the utilization of solid waste and tires, which are widely used as a fuel in a rotary kiln. Zinc can also be introduced to cement through such secondary raw materials as slag, due to increased recycling of galvanized materials. The aim of this work was to determine the effect of zinc on the hydration of Portland cement, blended with ground blast furnace slag (GBFS). This effect was studied by isothermal and isoperibolic calorimetry. Both calorimetry methods are suitable for measurements during the first days of hydration. Isoperibolic calorimetry monitors the hydration process in real-life conditions, while isothermal calorimetry does so at a defined chosen temperature. Zinc was added to the cement in the form of two soluble salts, namely Zn(NO3)2, ZnCl2, and a poorly soluble compound, ZnO. The concentration of added zinc was chosen to be 0.05, 0.1, 0.5, and 1mass percent. The amount of GBFS replacement was 15% of cement dosage. The newly formed hydration products were identified by X-ray diffraction method (XRD).

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Section: Introductionmentioning

confidence: 99%

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

et al. 2019

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“…The corresponding values of the binders based on the 100% slag mechanically activated in air and in CO 2 were 3.1 and 23.8 MPa, respectively. As was shown in [52,53], mechanical activation of the slag in carbon dioxide atmosphere was accompanied by sorption of CO 2 in the form of distorted carbonate groups by the outer layers of the slag particles. This resulted in higher reactivity and faster hydration of the slag carbonized by mechanical activation in CO 2 in comparison to those of the slag mechanically activated in air.…”

Section: The Nepheline Concentrate-cu-ni Slag-water Bindermentioning

confidence: 74%

Binding Properties of Mechanically Activated Nepheline Containing Mining Waste

2020

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The development of apatite and rare-metal deposits of the Khibiny and Lovozero—the world’s largest ultrabasic massifs located in the Kola Alkaline Province—is accompanied by accumulation of huge amounts of sandy tailings dumps, about half consisting of nepheline. These tailings, on the one hand, pose a real threat of environmental pollution. On the other hand, they are “technogenic deposits” that contain reserves of valuable components (Na2O, K2O, Al2O3, etc.). In this paper, methods of processing of the nepheline-containing mining waste using mechanical activation to produce binding materials—geopolymers and blended cements—are observed. The advantages of combining the nepheline containing tailings dumps with other mining wastes accumulated in the region, such as Cu–Ni slag, are presented.

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Metallurgical Waste

Baláž

2021

Environmental Mechanochemistry

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A calorimetric study of hydration of magnesia-ferriferous slag mechanically activated in air and in CO2 atmosphere

Cited by 4 publications

References 26 publications

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

Application of Isothermal and Isoperibolic Calorimetry to Assess the Effect of Zinc on Hydration of Cement Blended with Slag

Binding Properties of Mechanically Activated Nepheline Containing Mining Waste

Metallurgical Waste

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