Properties Of Monolithic Cement Concrete, Hardening At Temperatures Close To Zero

dc.citation.epage110
dc.citation.issue2
dc.citation.journalTitleТеорія та будівельна практика
dc.citation.spage102
dc.citation.volume6
dc.contributor.affiliationХарківський національний автомобільно-дорожній університет
dc.contributor.affiliationХарківський національний університет міського господарства
dc.contributor.affiliationKharkiv National Automobile and Highway University
dc.contributor.affiliationKharkiv National University of Urban Economy
dc.contributor.authorТолмачов, С. М.
dc.contributor.authorТолмачов, Д. С.
dc.contributor.authorTolmachov, Sergiy
dc.contributor.authorTolmachov, Dmytro
dc.coverage.placenameЛьвів
dc.coverage.placenameLviv
dc.date.accessioned2025-11-04T09:42:46Z
dc.date.created2024-02-27
dc.date.issued2024-02-27
dc.description.abstractОднією з основних проблем твердіння монолітного цементобетону, особливо в умовах реставрації та реконструкції різних об'єктів, є твердіння бетону в умовах негативних температур. Зимові технології бетонування поділяються на два основні методи: термос-метод, за якого температура середовища, в якому твердне бетон, повинна бути вище нуля градусів Цельсія, або використання антиморозних добавок. В останньому випадку доцільно вводити до складу бетону антиморозні хімічні добавки, які знижують температуру замерзання води в бетоні. Однак відомі раніше проведені дослідження, які показують, що навіть у разі раннього замерзання бетону його якість залишається високою. У цьому випадку необхідно, щоб початок тужавлення цементного тіста відбувся до того, як бетон зможе замерзнути. Крім того, було висловлено припущення, що твердіння бетону за низьких температур може відбуватися без використання термос-методу. У статті представлені результати впливу температури твердіння на терміни тужавлення цементного тіста. Показано, як умови твердіння впливають на міцність та морозостійкість бетону.
dc.description.abstractOne of the main problems of hardening monolithic cement concrete, especially in the conditions of restoration and reconstruction of various objects, is the hardening of concrete in conditions of negative temperatures. Winter concreting technologies are divided into two main methods: the thermos method, in which the temperature of the environment in which the concrete hardens, must be above zero degrees Celsius, or the use of antifreeze additives. In the last case, it is advisable to introduce antifreeze chemical additives into the concrete composition, which lower the freezing temperature of water in concrete. However, previously conducted studies are known that show that even in the case of early freezing of concrete, its quality remains high. In this case, it is necessary that the beginning of setting of the cement paste occurs before the concrete can freeze. In addition, it has been suggested that concrete hardening at low temperatures can occur without using the thermos method. The article presents the results of the influence of hardening temperature on the setting time of cement paste. It is shown how hardening conditions affect on the strength and frost resistance of concrete.
dc.format.extent102-110
dc.format.pages9
dc.identifier.citationTolmachov S. Properties Of Monolithic Cement Concrete, Hardening At Temperatures Close To Zero / Sergiy Tolmachov, Dmytro Tolmachov // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2024. — Vol 6. — No 2. — P. 102–110.
dc.identifier.citationenTolmachov S. Properties Of Monolithic Cement Concrete, Hardening At Temperatures Close To Zero / Sergiy Tolmachov, Dmytro Tolmachov // Theory and Building Practice. — Lviv : Lviv Politechnic Publishing House, 2024. — Vol 6. — No 2. — P. 102–110.
dc.identifier.doidoi.org/10.23939/jtbp2024.02.102
dc.identifier.urihttps://ena.lpnu.ua/handle/ntb/117193
dc.language.isoen
dc.publisherВидавництво Львівської політехніки
dc.publisherLviv Politechnic Publishing House
dc.relation.ispartofТеорія та будівельна практика, 2 (6), 2024
dc.relation.ispartofTheory and Building Practice, 2 (6), 2024
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dc.relation.referencesenRixom, M. R. (1978). Chemical Admixtures for Concrete, London: E. & FN Spon Ltd. https://doi.org/10.4324/9780203017241
dc.relation.referencesenBrzozowski, P., Horszczaruk, E., & Hrabiuk, K. (2017). The influence of natural and nano-additives on early strength of cement mortars. Procedia Engineering, 172, 127-134. https://doi.org/10.1016/j.proeng.2017.02.034
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dc.relation.referencesenIoannidou, K., Del Gado, E., Ulm, F. J., & Pellenq, R. (2017, March). Failure of cement hydrates: freeze-thaw and fracture. In APS March Meeting Abstracts (Vol. 2017, pp. P18-008). Retrieved from Failure of cement hydrates: freeze-thaw and fracture - Astrophysics Data System
dc.relation.referencesenKind, V. M., Werneck, C., Müller, M., Unbehau, S., Ludwig, H. M., & Dehn, F. (2023). Spatially resolved analysis of the progression of freeze‐thaw damage in concrete. ce/papers, 6(6), 1214-1222. https://doi.org/10.1002/cepa.2971
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dc.relation.referencesenZhang, R., Liu, P., Ma, L., Yang, Z., Chen, H., Zhu, H. X., & Li, J. (2020). Research on the corrosion/permeability/frost resistance of concrete by experimental and microscopic mechanisms under different water-binder ratios. International Journal of Concrete Structures and Materials, 14, 1-11. https://doi.org/10.1186/s40069-019-0382-8
dc.relation.referencesenCollepardi, M. (2005). Admixtures: Enhancing concrete performance. In Admixtures-Enhancing Concrete Performance: Proceedings of the International Conference held at the University of Dundee, Scotland, UK on 6 July 2005 (pp. 217-230). Retrieved from Thomas Telford Publishing. ADMIXTURES: ENHANCING CONCRETE PERFORMANCE | Admixtures - Enhancing Concrete Performance
dc.relation.referencesenŁaźniewska-Piekarczyk, B., Miera, P., & Szwabowski, J. (2017, October). Plasticizer and superplasticizer compatibility with cement with synthetic and natural air-entraining admixtures. In IOP conference series: materials science and engineering (Vol. 245, No. 3, p. 032094). IOP Publishing. https://doi.org/10.1088/1757-899X/245/3/032094
dc.relation.referencesenTrofimov, B. Y., Kramar, L. Y., & Schuldyakov, K. V. (2017, November). On deterioration mechanism of concrete exposed to freeze-thaw cycles. In IOP Conference Series: Materials Science and Engineering (Vol. 262, No. 1, p. 012019). IOP Publishing. https://doi.org/10.1088/1757-899X/262/1/012019
dc.relation.referencesenTolmachov, S. (2020). Research of the reasons of frost destruction of road concrete. Key Engineering Materials, 864, 175-179. https://doi.org/10.4028/www.scientific.net/KEM.864.175
dc.relation.referencesenPowers, T. C. (1965). The mechanism of frost action in concrete. Retrieved from THE MECHANISM OF FROST ACTION IN CONCRETE - TRID
dc.relation.referencesenMoukwa, M. (1990). Deterioration of concrete in cold sea waters. Cement and Concrete Research, 20(3), 439-446. https://doi.org/10.1016/0008-8846(90)90034-U
dc.relation.referencesenZhang, M., Yang, L. M., Guo, J. J., Liu, W. L., & Chen, H. L. (2018). Mechanical properties and service life prediction of modified concrete attacked by sulfate corrosion. Advances in Civil Engineering, 2018(1), 8907363. Retrieved from Mechanical Properties and Service Life Prediction of Modified Concrete Attacked by Sulfate Corrosion - Zhang - 2018 - Advances in Civil Engineering - Wiley Online Library
dc.relation.referencesenTolmachov, S. (2020). Research of the reasons of frost destruction of road concrete. Key Engineering Materials, 864, 175-179. https://doi.org/10.4028/www.scientific.net/KEM.864.175
dc.relation.referencesenDSTU 8858:2019 Sumishi tsementobetonni dorozhniye ta tsementobeton dorozhniy. Tehnichni umovi. Kyiv, DP "UkrNDNC" (2020). Retrieved from DSTU 8858:2019 Sumishi tsementobetonni dorozhni ta tsementobeton dorozhnii. Tekhnichni umovy
dc.relation.urihttps://doi.org/10.1109/UKRCON.2017.8100531
dc.relation.urihttps://doi.org/10.1023/A:1014917601533
dc.relation.urihttps://doi.org/10.4324/9780203017241
dc.relation.urihttps://doi.org/10.1016/j.proeng.2017.02.034
dc.relation.urihttps://doi.org/10.1186/s40645-021-00414-x
dc.relation.urihttps://doi.org/10.1002/cepa.2971
dc.relation.urihttps://doi.org/10.1186/s40069-019-0382-8
dc.relation.urihttps://doi.org/10.1088/1757-899X/245/3/032094
dc.relation.urihttps://doi.org/10.1088/1757-899X/262/1/012019
dc.relation.urihttps://doi.org/10.4028/www.scientific.net/KEM.864.175
dc.relation.urihttps://doi.org/10.1016/0008-8846(90)90034-U
dc.rights.holder© Національний університет “Львівська політехніка”, 2024
dc.rights.holder© Tolmachov S., Tolmachov D., 2024
dc.subjectпочаток схоплювання (ПС)
dc.subjectкінець схоплювання (КС)
dc.subjectчас схоплювання (ЧС)
dc.subjectміцність
dc.subjectпротиморозна хімічна добавка
dc.subjectморозостійкість
dc.subjectbeginning of setting (BS)
dc.subjectend of setting (ES)
dc.subjectsetting time (ST)
dc.subjectstrength
dc.subjectantifreeze chemical admixture
dc.subjectfrost resistance
dc.titleProperties Of Monolithic Cement Concrete, Hardening At Temperatures Close To Zero
dc.title.alternativeВластивості монолітного цементобетону, що твердне за температур, близьких до нуля
dc.typeArticle

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