Feasibility of incorporating SO42--ions in zeolite-like matrices based on alkaline aluminosilicate binders

dc.contributor.authorKrivenko, Pavlo
dc.contributor.authorRudenko, Igor
dc.contributor.authorKonstantynovskyi, Oleksandr
dc.contributor.authorVaičiukynienė, Danutė
dc.date.accessioned2024-02-09T13:01:21Z
dc.date.available2024-02-09T13:01:21Z
dc.date.issued2023-08
dc.description.abstractFactors determining minimization of the influence of sulfate environments on concrete and risk of corrosion of embedded steel reinforcement have been analyzed. Coatings based on alkaline aluminosilicate binders were proposed to prevent transport of the sulfate ions into concrete. The formation of water resistant zeolite-like matrices on the alkaline aluminosilicate binder of the Na2O-K2O-Al2O3-SiO2-H2O system at 20 ± 2 ◦C can be provided by the use of calcium-containing modifying additives. Optimized molar ratios between oxides of binder constituent were SiO2/Al2O3 = 4–5 and K2O/(Na2O + K2O) = 0.15–0.30. The results of the study show that the speed of incorporating sulfate ions in cement matrix of binder from the sulfate environment is dependent upon a cation and ranks as follows: (NH4)2SO4 > MgSO4 > Na2SO4 > CaSO4. Complete protection of concrete against the penetration of sulfates can be reached when the developed coating is applied in a thickness of 3 mm.
dc.description.sponsorshipAuthors would like to acknowledge the contribution of the Research Council of Lithuania and the Ministry of Education and Science of Ukraine project ‘‘Solutions to reduce aggressive ions SO4 2- and Cl- during transport in Portland cement concrete with steel reinforcement in hydraulic structures”, project code S-LU-22-7. The authors also express their gratitude to the Ministry of Education and Science of Ukraine for financial support of this research that is carried out within the budgetary financing of topic with registration No 1020U001010 and implementation period of 2020-2022.
dc.identifier.citationFeasibility of incorporating SO42--ions in zeolite-like matrices based on alkaline aluminosilicate binders / P. Krivenko, I.Rudenko, O. Konstantynovskyi, D. Vaičiukynienė // Construction and Building Materials. - 2023. - Vol. 391 (131878). - P. 1 - 12. - Bibliogr. : 88 titl.
dc.identifier.doi10.1016/j.conbuildmat.2023.131878
dc.identifier.issn0950-0618
dc.identifier.urihttps://repositary.knuba.edu.ua/handle/123456789/11987
dc.language.isoen
dc.publisherElsevier BV
dc.relation.ispartofConstruction and Building Materials
dc.relation.ispartofseries391; 131878
dc.subjectcoating
dc.subjectconcrete deterioration
dc.subjectsulfate environment
dc.subjectzeolite-like matrix
dc.subjectwater resistance
dc.subjectalkaline aluminosilicate binder
dc.subjectкафедра технології будівельних конструкцій і виробів
dc.subject.udc666.9:691.5
dc.titleFeasibility of incorporating SO42--ions in zeolite-like matrices based on alkaline aluminosilicate binders
dc.typejournal-article
oaire.citation.volume391

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