Modified fine-grained concretes based on highly filled self-compacting mixtures

In this article the results of study of rheo-technological characteristics of cement-carbonate suspensions and physical and mechanical characteristics of cement composites from highly filled self-compacting mixtures are presented. The optimal dosage of polycarboxylate superplasticizer (Melflux 5581...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-03, Vol.481 (1), p.12048
Main Authors: Nizina, T A, Balykov, A S, Korovkin, D I, Volodin, V V
Format: Article
Language:English
Subjects:
Bend strength
Compacting
Compressive strength
Mechanical properties
Quartz
Rheological properties
Superplasticizers
Workability
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Summary:In this article the results of study of rheo-technological characteristics of cement-carbonate suspensions and physical and mechanical characteristics of cement composites from highly filled self-compacting mixtures are presented. The optimal dosage of polycarboxylate superplasticizer (Melflux 5581 F) and rheologically active mineral filler (microcalcite) in cement-mineral suspensions when developing self-compacting fine-grained concrete mixtures is defined. The water demand of fine natural quartz sands using the methodology of Skramtayev and Bazhenov is studied. The compositions of self-compacting fine-grained concrete mixtures of workability class SF1 with fine natural quartz sand are developed. High physical and mechanical characteristics of fine-grained concretes from highly filled self-compacting mixtures are fixed: density in normal humidity conditions at the age of 28 days up 2393 kg/m3; bending and compressive strength at the age of 28 days up 14.9 and 115.8 MPa, respectively.
ISSN:1757-8981
1757-899X
1757-899X
DOI:10.1088/1757-899X/481/1/012048