Original scientific paper

Fine-grained Fiber Concrete on Mechanoactivated Portlandcement

Anatoli Vorokhaiev ; Odessa State Academy of Civil Engineering & Architecture
Ivan Barabash ; Odessa State Academy of Civil Engineering & Architecture
Liubov Ksonshkevych ; Odessa State Academy of Civil Engineering & Architecture
Zeljko Kos ; University North
Iryna Grynyova ; Odessa State Academy of Civil Engineering & Architecture

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 wellknown 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.

Keywords

intensive separate technology; basalt fiber; abrasion; impact resistance; activated binder

Hrčak ID:

261635

URI

https://hrcak.srce.hr/261635

Publication date:

30.8.2021.

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