Intumescent Fireproof Coatings Based on Zeolite‐like Cement Matrices

Krivenko, Pavel; Guzii, Sergii; Rudenko, Igor; Konstantynovskyi, Oleksandr

doi:10.1002/cepa.2214

Cited by 5 publications

(3 citation statements)

References 31 publications

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“…As the theoretical premise for the creation of alkali-activated materials with a polymeric structure, this study aimed at the synthesis of analogs to natural minerals based on clays of various structural types and applied alkali metal compounds [3,8,26]. An extensive practical experiment of the application of these binding systems in different materials for construction and protection was conducted [28][29][30][31][32][33][34][35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Design, Characterization, and Incorporation of the Alkaline Aluminosilicate Binder in Temperature-Insulating Composites

Kryvenko,

Rudenko,

Konstantynovskyi

et al. 2024

Materials

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This paper covers the design of binder formulations and technology for low-energy building materials based on alkaline aluminosilicate binders developed for special uses. The microstructure of the binders was investigated using scanning electron and atomic force microscopy examination techniques. The identification of phase compositions was performed by means of X-ray diffraction. The degree of binding of the alkali metal ions within the binder was determined with the help of chemical analysis of the pore fluid. Structure formation depending upon binder mix design and curing conditions was also studied. Some examples of the manufacture and application of binder-based glues and adhesives, including those developed for heat insulation and fire prevention, are discussed. The advantages of binder-based temperature-insulating composite materials compared with traditionally used materials are highlighted.

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Section: Introductionmentioning

confidence: 99%

Design, Characterization, and Incorporation of the Alkaline Aluminosilicate Binder in Temperature-Insulating Composites

Kryvenko,

Rudenko,

Konstantynovskyi

et al. 2024

Materials

Self Cite

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“…As the theoretical premises for the creation of alkali-activated materials with polymeric structure, there has been taken the researches aimed at the synthesis of the analogs to natural minerals, based on clays of various structural types and alkali metal compounds [3,8,26]. The practical results, concerning the application of these systems in different sectors of construction, were also used [28][29][30][31][32][33][34][35][36][37][38]. But, the next objective here is to create the low energy technology for obtaining water resistant composite at low temperatures.…”

Section: Introductionmentioning

confidence: 99%

Design Characterization and Incorporation of the Alkaline Alumino-Silicate Binder in Temperature Insulating Composites

Kryvenko,

Rudenko,

Konstantynovskyi

et al. 2023

Preprint

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The paper covers the development of formulations and technology for low energy building materials based on the alkaline alumino-silicate binder and appropriate for special purposes. The microstructure of the binder was investigated using scanning electron microscopy and atomic force microscopy. The identification of the phase compositions was done by means of X-ray diffraction. By leach rate measurement and chemical analysis of pore liquid, the linkage of the alkali metal ions in water-insoluble composites was researched. The dependence of structure formation on mix design and curing conditions was investigated. Specific examples of manufacture and application of binder-based glues and adhesives have been considered, incl. ones for low-temperature insulating composite materials, heat insulation perlite-based materials, heat insulation of industrial boilers, and the fire resistant heat insulating system. The advantages of the binder-based temperature insulating composites compared to traditionally used ones are shown.

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“…Alkali-activated cements are products of the chemical interaction of alkali element compounds with an aluminosilicate component. In the case of metallurgical slag, the min-eralogical composition of the curing products (slag cements) also includes tobermorite -like low-base calcium hydrosilicates, hydrogranates, and alkaline-alkaline earth hydroalumina of zeolite type [13,14].…”

Section: Introductionmentioning

confidence: 99%

Application of alkali-activated cements for immobilization of dry low-level radioactive waste containing copper ferrocyanide

Guzii,

Zlobenko

2023

TT: PhE

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Summary: The possibility of using alkali-activated slag-Portland cement for immobilization of dry radioactive waste containing copper ferrocyanide they been confirmed. Because of optimization, the areas of existence of compositions that provide the criterion requirements for strength have been established. Introduction of magnetite additives in the amount of 14...15 wt. % (factor X1), zeolite in the amount of 6.5...7.5 wt. % (factor X2) and dry radioactive waste on the basis of copper ferrocyanide in the amount of 10...12 wt. % (factor X3) provides criterion requirements for compressive strength. The maximum value of strength – 13.2 MPa on the 28th day of hardening is characteristic for the above-mentioned quantities of additives, and it is 1.32 times higher than the standard level of strength. Introduction of zeolite for 6.5...7.5 wt. % allows to reduce the mass and density (1.07 times), radioactivity (1.09 times) of composites. Because of modelling of compound compositions, especially in the expected reactions, the factor X3 shows a weakening factor contributing to the reduction of values of output parameters. Therefore, the introduction of dry radioactive waste into the alkaline slag-Portland cement matrix containing copper ferrocyanide is limited to no more than 12 wt. %. The processes occurring in the volume of the material explain the reduction of mass, density and radioactivity of the compounds. The energy released during radioactive decay of cesium, strontium and other radionuclides is absorbed by magnetite and converted into heat. Heat promotes the removal of physically bound and partially chemically bound water from the structure of tobermorite-like low-basic calcium hydrosilicates, hydrogranates, alkaline-alkaline-earth zeolite-type hydroaluminosilicates, and copper ferrocyanide hydrate shell. However, the passage of radiolysis does not affect the kinetics of strength gain of the compounds, but contributes to the increase of their compressive strength by 1.87 times compared to the strength of the compounds on 7 days of curing

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Intumescent Fireproof Coatings Based on Zeolite‐like Cement Matrices

Cited by 5 publications

References 31 publications

Design, Characterization, and Incorporation of the Alkaline Aluminosilicate Binder in Temperature-Insulating Composites

Design, Characterization, and Incorporation of the Alkaline Aluminosilicate Binder in Temperature-Insulating Composites

Design Characterization and Incorporation of the Alkaline Alumino-Silicate Binder in Temperature Insulating Composites

Application of alkali-activated cements for immobilization of dry low-level radioactive waste containing copper ferrocyanide

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