Publication detail

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

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

Original Title

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

Type

conference paper

Language

English

Original Abstract

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.

Keywords

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

Authors

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

Released

25. 4. 2016

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-0383-5675-2

Book

Solid State Phenomena

Edition number

249

ISBN

1012-0394

Periodical

Solid State Phenomena

Number

249

State

Swiss Confederation

Pages from

147

Pages to

151

Pages count

5

URL

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

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"
}