Publication detail

The Effect of the Composition of a Concrete Mixture on Its Volume Changes

ŤAŽKÝ, M. BODNÁROVÁ, L. ŤAŽKÁ, L. HELA, R. MERUŇKA, M. HLAVÁČEK, P.

Original Title

The Effect of the Composition of a Concrete Mixture on Its Volume Changes

Type

journal article in Web of Science

Language

English

Original Abstract

The presented research aims to clarify the specific effect of the individual components of concrete with Portland cement CEM I 42.5 R on the volume changes of concrete. The effect of the filler component was evaluated from the point of view of the composition and type of aggregate (crushed versus mined) and from the point of view of the mineralogical composition of the aggregate. Concrete formulas with a maximum aggregate grain size of 16 and 22 mm were assessed. The effect of the binder component on the shrinkage of the concrete was monitored on the concrete mixtures produced using the same aggregate and maintaining the same strength class of concrete, C 45/55. The effect of the addition of finely ground limestone, finely ground granulated blast furnace slag and coal high-temperature fly ash was monitored. It was found that the maximum aggregate grain and the type of grading curve do not have a significant effect on the volume changes of concrete. Concretes with mined aggregates showed lower shrinkage than concretes with crushed aggregates. The most significant is the effect of the type of aggregate on the volume changes in the first 24 h. Mineral additives have a positive effect on the elimination of the volume changes of concrete, while the addition of high-temperature fly ash proved to be the most suitable.

Keywords

concrete; volume changes; shrinkage; crushed and mined aggregate; finely ground limestone; finely ground granulated blast furnace slag; coal high-temperature fly ash

Authors

ŤAŽKÝ, M.; BODNÁROVÁ, L.; ŤAŽKÁ, L.; HELA, R.; MERUŇKA, M.; HLAVÁČEK, P.

Released

9. 2. 2021

Publisher

MDPI

Location

Switzerland

ISBN

1996-1944

Periodical

Materials

Year of study

14

Number

4

State

Swiss Confederation

Pages from

1

Pages to

26

Pages count

26

URL

https://www.mdpi.com/1996-1944/14/4/828

Full text in the Digital Library

http://hdl.handle.net/11012/196749

BibTex

@article{BUT169290,
  author="Martin {Ťažký} and Lenka {Bodnárová} and Lucia {Ťažká} and Rudolf {Hela} and Milan {Meruňka} and Petr {Hlaváček}",
  title="The Effect of the Composition of a Concrete Mixture on Its Volume Changes",
  journal="Materials",
  year="2021",
  volume="14",
  number="4",
  pages="1--26",
  doi="10.3390/ma14040828",
  issn="1996-1944",
  url="https://www.mdpi.com/1996-1944/14/4/828"
}