Study of the Properties of Low-Carbon Portland-Composite Cements CEM II/C-M

Kropyvnytska, Тetiana; Sanytsky, Myroslav; Heviuk, Iryna; Kripka, Ludmyla

doi:10.1007/978-3-031-14141-6_22

Cited by 4 publications

(2 citation statements)

References 24 publications

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“…Such cements conform to the modern tendencies in construction engineering [12,13]. Their ecological profits are caused by less emission of CO 2 due to the use of wаste products [14]. Formаtion of АFm phases can be enhanced due to GBFS in cement in view of higher Al 2 O 3 content [15].…”

Section: Introductionmentioning

confidence: 99%

Concrete Protection from Sulfate Aggression by Coating Based on Zeolite-Like Binders

Kryvenko,

Rudenko,

Konstantynovskyi

et al. 2023

Advances in Transdisciplinary Engineering

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The article is dedicated to concrete protection, exploited in sulfate mediums. Protective surface coating based on based on zeolite-like binder was proposed as a mean to restrict SO42- ions transport in concrete. It was demonstrated that the coating with a 3 mm thickness provides total protection of concrete. The ions transport in concrete depending on cation of sulfate medium lowers in the row (NH4)2 SO4>Na2 SO4>Mg SO4. The simulation of coating work was realized by adding the specified salts in zeolite-like binder. pH value decreasing of water extracts during binder hydration while applicated 2.5 % Mg SO4 is evidence of higher crystallinity of zeolite-like hydroalumino silicates, containing sulfate, with including of Mg2+ ions equal to Ca2+ ions. While the content of (NH4)2 SO4 was rised up to 5.0 %, minor pH was fixed due to declined synthes of other zeolite-like minerals. The absence of effect on structure formation was caused by the stability of pH values in the presence of Na2SO4 (0.5…2.5 %). Thus, the limitation of SO42- ions transport in the coating is due to their binding in zeolite-like minerals with advanced crystallinity in the appearance of Na+, NH4+, and Mg2+ sulfate cations.

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Section: Introductionmentioning

confidence: 99%

Concrete Protection from Sulfate Aggression by Coating Based on Zeolite-Like Binders

Kryvenko,

Rudenko,

Konstantynovskyi

et al. 2023

Advances in Transdisciplinary Engineering

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“…To decrease the content of clinker constituent in cements due to use of ground granulated blast furnace slag (further, GGBFS) [1], fly ash [2], limestone [3], natural zeolites [4], biochar (the carbon negative product of pyrolysis) [5], etc. is an effective way to meet the requirements of sustainable development.…”

Section: Introductionmentioning

confidence: 99%

Sustainable performance of alkali-activated blast furnace cement concrete with high freeze-thaw resistance

Krivenko,

Rudenko,

Konstantynovskyi

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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The application of blast furnace cements with minor clinker constituent is an actual task due to their conformity with modern tendencies of sustainable development. The alkali metal compounds were proposed to increase activity of CEM III/C. The aim of the research was to investigate the effects of technological factors on porous structure of alkali-activated blast furnace cement concrete (further, AABFC concrete) to ensure its sustainable performance by criterium of freeze-thaw resistance in NaCl solution. The effects of fresh concrete consistency, aggregate state of alkaline component and curing conditions on sustainability of AABFC concrete were investigated. Increasing of fresh concrete consistency from class S1 up to class S4 due to chemical plasticization as well as application of alkaline component in dry form, in contrast to liquid form, ensures negative changes in porous structure of AABFC concrete. These changes cause decreasing of freeze-thaw resistance from mark F500 down to F200. It was revealed that hardening of plasticized AABFC concrete under normal conditions (t = 20±2 ° C, RH = 95±5%), compared with hardening in water or under steam curing (t = 85±5 ° C), ensures more effective porous structure which causes maintained freeze-thaw resistance of F300 in contrast to F200 and F250 agreeable.

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Alkali-activated cements as sustainable materials for repairing building construction: A review

Kryvenko,

Rudenko,

Sikora

et al. 2024

Journal of Building Engineering

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Study of the Properties of Low-Carbon Portland-Composite Cements CEM II/C-M

Cited by 4 publications

References 24 publications

Concrete Protection from Sulfate Aggression by Coating Based on Zeolite-Like Binders

Concrete Protection from Sulfate Aggression by Coating Based on Zeolite-Like Binders

Sustainable performance of alkali-activated blast furnace cement concrete with high freeze-thaw resistance

Alkali-activated cements as sustainable materials for repairing building construction: A review

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