Detail publikace

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.

Originální název

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

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

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

Autoři

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

Vydáno

9. 2. 2021

Nakladatel

MDPI

Místo

Switzerland

ISSN

1996-1944

Periodikum

Materials

Ročník

14

Číslo

4

Stát

Švýcarská konfederace

Strany od

1

Strany do

26

Strany počet

26

URL

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

Plný text v Digitální knihovně

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"
}