Modification of the cement stone active silm of urban treatment facilities

Romanenko, Igor; Romanenko, Maria; Petrovnina, I. N.

doi:10.1088/1757-899x/709/2/022096

Cited by 5 publications

(6 citation statements)

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“…Investigations [7][8][9] carried out to determine the phase composition of steelmaking slag after carbonization reactions in the reactor and in the CO2 environment after 14 hours established the formation of the following minerals: CaCO3 calcite and calcium silicate hydrate CSH, MgCO3 magnesite, Ca3Mg(SiO4)2 merwinite and FeO wustite.…”

Section: Fig 2 Samples From Steelmaking Slag Fraction After Carbonization In the Reactor After 14 Hoursmentioning

confidence: 99%

Carbonized Steel-Smelting Slag Is a Promising Raw Material for the Production of Artificial Concrete

Romanenko

2022

Materials Research Proceedings

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Abstract. Obtaining an artificial stone based on steel-smelting slag is possible as a result of carbonization of the feedstock in carbon dioxide. The feedstock - slag and carbon dioxide - are by-products from steel smelting in electric furnaces, which must be disposed of in order to improve the environmental situation in the region. The condition for obtaining the cementing ability of steelmaking slag is the preparation of a charge with certain properties and maturation technology: humidity, dispersion of the fine fraction and the maximum size of the coarse fraction, the ratio between the coarse and dispersed fractions, the concentration of carbon dioxide in the gas-air environment, temperature, pressure and flow time. carbonization reactions in the reactor, the magnitude of the pressure during the production of pressed articles, the process of stone maturation in the post-carbonization period.

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Section: Fig 2 Samples From Steelmaking Slag Fraction After Carbonization In the Reactor After 14 Hoursmentioning

confidence: 99%

Carbonized Steel-Smelting Slag Is a Promising Raw Material for the Production of Artificial Concrete

Romanenko

2022

Materials Research Proceedings

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“…The slag obtained in the production of pig iron is fully used in the construction industry [1,2]. Slag is most commonly used in the production of Portland cement, slag portland cement and the production of slag-alkali binder.…”

Section: Introductionmentioning

confidence: 99%

Steelmaking Slag - A Complex Material for the Production of Small-Size Materials Using Hyper-Press Technology

Romanenko

Fadin

2021

MSF

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The solution to the problem of large industrial cities with a developed metallurgical industry is the creation of environmentally friendly conditions for the life of the population through the disposal of industrial waste. The studies carried out have shown that the developed technology makes it possible to widely use steel-making slags and carbon dioxide emitted into the atmosphere in the production of small-piece wall stones with high operational properties. It is shown that only slag is required to obtain wall material without the use of a hydraulic binder.

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“…The most common method of regulating the mechanical and operational properties of building materials is the use of modifying additives [1][2][3][4][5][6][7][8][9][10][11]. One of the reasons for the change in properties is the change in the chemical composition of the resulting composite.…”

Section: Introductionmentioning

confidence: 99%

Chemical composition of nanomodified cement stone

Grishina

Korolev

2021

E3S Web Conf.

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Improving the properties of cement building materials is possible with the use of modifiers, including nanoscale ones. Such nanomodifiers include hydrosilicates of zinc and copper. The increase in the performance characteristics of nanomodified cement composites is due to changes in the chemical composition of the resulting cement stone, in particular, an increase in the content of hydrosilicate structures. The chemical composition of the cement stone was studied by FTIR-spectroscopy. Colloidal solutions of zinc and copper hydrosilicates with known characteristics were used for the nanomodification of cement stone. It is shown that when using copper hydrosilicates synthesized at high concentrations of iron hydroxide, the concentration of amorphous silica does not significantly affect the composition of cement stone. However, with a decrease in the concentration of iron hydroxide, with an increase in the concentration of amorphous silica, the content of hydrosilicate structures increases. The use of nanoscale zinc hydrosilicates is more efficient than copper hydrosilicates. Their use makes it possible to increase the content of structures containing silicon-oxygen tetrahedra, submicrocrystalline calcium hydrosilicates of a tobermorite-like structure in cement stone, and the formation of ettringite is also noted. Thus, it was found that the use of zinc hydrosilicates as nanomodifiers for cement stone allows increasing the content of hydrosilicate structures in hydration products.

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Modification of the cement stone active silm of urban treatment facilities

Cited by 5 publications

References 1 publication

Carbonized Steel-Smelting Slag Is a Promising Raw Material for the Production of Artificial Concrete

Carbonized Steel-Smelting Slag Is a Promising Raw Material for the Production of Artificial Concrete

Steelmaking Slag - A Complex Material for the Production of Small-Size Materials Using Hyper-Press Technology

Chemical composition of nanomodified cement stone

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