Effect of technological factors on freeze-thaw resistance of alkali-activated slag cement concrete in NaCl solution

Скорочена інформація про документ
dc.contributor.authorKrivenko, Pavel
dc.contributor.authorRudenko, Igor
dc.contributor.authorKonstantynovskyi Oleksandr
dc.date.accessioned2024-02-05T11:01:25Z
dc.date.available2024-02-05T11:01:25Z
dc.date.issued2023
dc.description.abstractThe application of alkali-activated slag cement concrete (hereinafter AASC concrete) is relevant for building constructions which are exploited in aggressive environments with exposed class XF4. It is due to increased freeze-thaw resistance of AASC concrete in water solutions of salts if compared with portland cement concrete. The aim of this work was to investigate the effects of technological factors on porous structure and freeze-thaw resistance of plasticized AASC concrete in NaCl solution. It was shown that increasing of fresh concrete consistency from class S1 up to class S4 due to plasticization by complex admixture “polyorganohydrosiloxane - sodium lignosufonate - polyethylene glycol” as well as application of alkaline component in dry form, in contrast to liquid form, ensures negative changes in porous structure of AASC concrete. These changes cause decreasing of freeze-thaw resistance from mark F500 down to F200. It was revealed that hardening of plasticized AASC concrete under normal conditions (t = 20±2 °С, RH = 95±5%), compared with hardening in water or under steam curing (t = 85±5 °С), ensures more effective porous structure which causes maintained freeze-thaw resistance of F300 in contrast to F200 and F250 agreeable. Effective technological decisions for advanced freeze-thaw resistant of AASC concrete were determined.
dc.identifier.citationKrivenko P. Effect of technological factors on freeze-thaw resistance of alkali-activated slag cement concrete in NaCl solution / P. Krivenko, I. Rudenko, O. Konstantynovskyi // AIP Conference Proceedings: Reliability and Durability of Railway Transport Engineering Structure and Buildings. - Vol. 2684. – 2023. - P. 040011-1 - 040011-8. – Bibliogr. : 48 titl.
dc.identifier.doi10.1063/5.0120034
dc.identifier.issn0094-243X
dc.identifier.urihttps://repositary.knuba.edu.ua/handle/123456789/11979
dc.language.isoen
dc.publisherAIP Publishing
dc.relation.ispartofAIP Conference Proceedings
dc.relation.ispartofRELIABILITY AND DURABILITY OF RAILWAY TRANSPORT ENGINEERING STRUCTURE AND BUILDINGS
dc.subjectalcali-activated concrete
dc.subjectporous structure
dc.subjectfreeze-thaw resistance
dc.subjecttechnological factors
dc.subjectagregate state
dc.subjectplasticizer
dc.subject.udc666
dc.titleEffect of technological factors on freeze-thaw resistance of alkali-activated slag cement concrete in NaCl solution
dc.typeproceedings-article

Файли

Контейнер файлів

Зараз показуємо 1 - 1 з 1
Ескіз
Назва:
AIP-2023.pdf
Розмір:
893.91 KB
Формат:
Adobe Portable Document Format
Завантажити

Ліцензійна угода

Зараз показуємо 1 - 1 з 1
Ескіз недоступний
Назва:
license.txt
Розмір:
1.71 KB
Формат:
Item-specific license agreed upon to submission
Опис:
Завантажити

Зібрання

Будівництво та цивільна інженерія