Detail publikačního výsledku

Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars

ŠIMONOVÁ, H.; ZAHÁLKOVÁ, J.; ROVNANÍKOVÁ, P.; KERŠNER, Z.; SCHMID, P.

Originální název

Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars

Anglický název

Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

This paper presents selected results from a study concerning mechanical fracture parameters related to the formation of the solid structure of cement mortars. The tested mixtures were composed of an invariable quantity of cement (type CEM I 42.5 R) and an increasing amount of amorphous SiO2 (marked with a P), or a variable quantity of cement replaced by varied quantities of amorphous SiO2 (marked with an N). It was decided that the consistencies of the fresh mixtures should be identical: to ensure this, the water-cement ratio was increased as necessary. Quantification of the mechanical fracture parameters of the studied composites (fracture toughness, fracture energy, compressive strength, modulus of elasticity) was performed via the evaluation of fracture tests performed on beam specimens with an initial stress concentrator loaded in three-point bending. Subsequently, the results of the experiments in the form of load versus displacement diagrams were processed using the effective crack fracture model and the work of fracture method.

Anglický abstrakt

This paper presents selected results from a study concerning mechanical fracture parameters related to the formation of the solid structure of cement mortars. The tested mixtures were composed of an invariable quantity of cement (type CEM I 42.5 R) and an increasing amount of amorphous SiO2 (marked with a P), or a variable quantity of cement replaced by varied quantities of amorphous SiO2 (marked with an N). It was decided that the consistencies of the fresh mixtures should be identical: to ensure this, the water-cement ratio was increased as necessary. Quantification of the mechanical fracture parameters of the studied composites (fracture toughness, fracture energy, compressive strength, modulus of elasticity) was performed via the evaluation of fracture tests performed on beam specimens with an initial stress concentrator loaded in three-point bending. Subsequently, the results of the experiments in the form of load versus displacement diagrams were processed using the effective crack fracture model and the work of fracture method.

Klíčová slova

Cement mortar, amorphous SiO2, fracture test, fracture parameters.

Klíčová slova v angličtině

Cement mortar, amorphous SiO2, fracture test, fracture parameters.

Autoři

ŠIMONOVÁ, H.; ZAHÁLKOVÁ, J.; ROVNANÍKOVÁ, P.; KERŠNER, Z.; SCHMID, P.

Rok RIV

2017

Vydáno

25.04.2016

Nakladatel

Trans Tech Publications

Místo

Switzerland

ISBN

978-3-0383-5675-2

Kniha

Solid State Phenomena

ISSN

1012-0394

Periodikum

Solid State Phenomena

Číslo

249

Stát

Švýcarská konfederace

Strany od

147

Strany do

151

Strany počet

5

URL

https://www.scientific.net/SSP.249.147

Plný text v Digitální knihovně

http://hdl.handle.net/

BibTex

@inproceedings{BUT124281,
  author="Hana {Šimonová} and Jana {Břicháčková} and Pavla {Rovnaníková} and Zbyněk {Keršner} and Pavel {Schmid}",
  title="Effect of Amorphous Silicon Dioxide Amount on the Mechanical Fracture Parameters of Cement Mortars",
  booktitle="Solid State Phenomena",
  year="2016",
  journal="Solid State Phenomena",
  number="249",
  pages="147--151",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/SSP.249.147",
  isbn="978-3-0383-5675-2",
  issn="1012-0394",
  url="https://www.scientific.net/SSP.249.147"
}