Cements with low water demand as an alternative type of binding mixture used in ready-mixed concrete
https://doi.org/10.21285/2227-2917-2023-1-58-63
Abstract
The paper compares Portland cement and cement with low water demand. The aim of the study was to estimate the possibility of reducing the cost of a binder and the cost of the resulting readymixed concrete, along with achieving its improved physical and mechanical properties over a short time frame. This is undoubtedly a relevant indicator, especially in winter construction, since the kinetics of concrete strength gain is one of the key factors limiting the pace of construction. The study assesses the feasibility of introducing technogenic waste and local minerals into concrete composition, as well as effectively selected structural chemistry based on polycarboxylates. Cements with low water demand of various grades were produced by grinding Portland cement and silica or carbonate filler, in the presence of the required dosage of superplasticizer and depending on the type of cement with low water demand under investigation. Based on the results of the study, the efficiency of obtaining cements with low water demand of carbonate and silica type was estimated. Kinetics of strength gain and normal density of cement-water paste of various compositions were considered. Optimal value of the specific surface area of the cement with low water demand was established. The strength dependencies of the concrete produced on the basis of low water demand cement of different grades were analyzed. The conclusions enable the effectiveness of using the binders under development to be assessed.
About the Author
S. V. Makarenko
Irkutsk National Research Technical University
Russian Federation
Competing Interests:
Russian Federation
Sergey V. Makarenko - Cand. Sci. (Eng.), Associate Professor, Associate Professor of the Department of Construction Production.
83 Lermontov St., Irkutsk 664074
Competing Interests:
The author declare no conflict of interests regarding the publication of this article
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Review
For citations:
Makarenko S.V. Cements with low water demand as an alternative type of binding mixture used in ready-mixed concrete. Izvestiya vuzov. Investitsii. Stroitelstvo. Nedvizhimost. 2023;13(1):58-63. (In Russ.) https://doi.org/10.21285/2227-2917-2023-1-58-63
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