Affiliation:
1. Odessa State Academy of Civil Engineering & Architecture
2. University North
Abstract
Abstract
This article is devoted to the study of the mechanical properties of fine-grained concrete used for flooring in industrial and civil buildings. Characterized by the well-known advantages (unlimited raw material base, manufacturability, high homogeneity), fine-grained concrete requires an increased consumption of cement to achieve the necessary mechanical characteristics - compressive strength, abrasion, impact resistance. An alternative to the known technological method is proposed an intensive separate technology (IST) for preparing fine-grained concrete mixtures using a high-speed mixer-activator in the presence of hydrophobized basalt fiber and a polycarboxylate superplasticizer Relaxol-Super PC. The use of IST leads to an increase in the strength of fine-grained concrete in compression by 1.9 times, impact resistance by a factor of 2, and a decrease in abrasion by 40... 50% in comparison with the control. The relevance of using the technology of monolithic floors for industrial and civil construction is due to a wide range of varieties of Portland cement, the grain composition of aggregates, as well as the simplicity of the technology for preparing a fine-grained concrete mixture.
Reference10 articles.
1. [1] Zarubina L.P. (2011) Floor arrangement. Materials and technologies: St. Petersburg BHV – Petersburg.
2. [2] Klyuev S.V. Lesovik R.V., A.V. Ginzbrurg, S.A. Kazlitin (2013) Fibrer concrete for heavy-load floors of industrial buildings. Belgorod: Publishing house of BSTU im. V.G. Shukhov.
3. [3] Barabash I., Harashenko D. (2018) Mechanoactivation of Portland cement in the technology of manufacturing the self-compacting concrete. Еastern-european journal of enterprise technologies. № 3/6 (93), 12-17
4. [4] Ksonshkevych L., Krantovska O., Petrov M., Synii S., Uhl A. (2018). Investigation of the structure of cement stone, obtaining and optimization of high-strength concrete on mechanically activated binder. MATEC Web of Conferences (pp. 1-8). EDP Sciences https://doi.org/10.1051/matecconf/201823003010
5. [5] Кsonshkevych L., Barabash I., Krantovska O., Synii S., Sunak P. (2019) Disperse reinforced concrete with polycarboxylate additive on a mechanically activated binder: IOP Conference Series: Materials Science and Engineering №708. IOP Publishing Ltd https://iopscience.iop.org/article/10.1088/1757-899X/708/1/012092