Detail publikace

Effect of Inorganic SiO2 Nanofibers in High Strength Cementitious Composites

BODNÁROVÁ, L. HELA, R. SEDLÁČEK, D.

Originální název

Effect of Inorganic SiO2 Nanofibers in High Strength Cementitious Composites

Typ

abstrakt

Jazyk

angličtina

Originální abstrakt

The paper deals with the verification of the effect of the addition of inorganic SiO2 nanofibers to cement composites. In the first stage, a stable suspension of SiO2 nanofibers was prepared in an aqueous medium. It is important to distribute nanofibers so that the nanofibers do not appear in the form of clumps and at the same time do not get damaged during the dispersion process. The ultrasonification process was used for dispersion. The dispersed suspension of SiO2 nanofibers and water was dosed together with the superplasticizing admixtures into the dry components of the cement composite and the components were homogenized. The properties of the cement composite with SiO2 nanofibers have been tested – compressive strength, flexural strength, density. Composites with the addition of SiO2 nanofibers at a dose of 0.008 % by weight of cement exhibited an increased compressive strength of up to 33 % and a 19 % greater flexural strength at doses of 0.016 and 0.032 % of cement weight than the reference sample without nanofibers. The presence of SiO2 nanofibers in the composite was monitored by scanning electron microscopy (SEM).

Klíčová slova

Nanofibres, cement, composites, strength

Autoři

BODNÁROVÁ, L.; HELA, R.; SEDLÁČEK, D.

Vydáno

26. 8. 2018

Nakladatel

2nd International Conference on Building Materials and Materials Engineering (ICBMM 2018)

Místo

Lisbon, Portugal

Strany od

29

Strany do

29

Strany počet

1

BibTex

@misc{BUT155589,
  author="Lenka {Bodnárová} and Rudolf {Hela} and Daniel {Sedláček}",
  title="Effect of Inorganic SiO2 Nanofibers in High Strength Cementitious Composites",
  year="2018",
  pages="29--29",
  publisher="2nd International Conference on Building Materials and Materials Engineering (ICBMM 2018)",
  address="Lisbon, Portugal",
  note="abstract"
}