Detail publikace

Carbon nanotube reinforced alkali-activated slag mortars

ROVNANÍK, P. ŠIMONOVÁ, H. TOPOLÁŘ, L. BAYER, P. SCHMID, P. KERŠNER, Z.

Originální název

Carbon nanotube reinforced alkali-activated slag mortars

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

The paper reports on a study of the effect of multi-walled carbon nanotubes (MWCNTs) when used as dispersed reinforcement on the fracture properties and microstructure of alkali-activated slag mortars. The amount of MWCNTs added varied in the range of 0.05–1.0% of the mass of slag. Mechanical and fracture properties were determined using fracture tests carried out on 40 × 40 × 160 mm specimens with a central notch. The observed parameters were compressive strength, modulus of elasticity, effective fracture toughness and specific fracture energy. Specimen response during fracture tests was also monitored by means of acoustic emission, and this method was also used for the determination of cracking tendency due to autogenous and drying shrinkage occurring during the hardening process. It is shown that the addition of up to 0.2% of MWCNTs improves the fracture properties of alkali-activated slag. Although a higher dosage of MWCNTs reduced the number of microcracks observed by acoustic emission, the mechanical properties of the slag deteriorated due to the less effective dispersion of the MWCNTs and the formation of bundles.

Klíčová slova

Alkali-activation; slag; carbon nanotubes; fracture properties; acoustic emission; microstructure

Autoři

ROVNANÍK, P.; ŠIMONOVÁ, H.; TOPOLÁŘ, L.; BAYER, P.; SCHMID, P.; KERŠNER, Z.

Vydáno

4. 5. 2016

Nakladatel

Elsevier

ISSN

0950-0618

Periodikum

Construction and building materials

Ročník

119

Číslo

1

Stát

Spojené království Velké Británie a Severního Irska

Strany od

223

Strany do

229

Strany počet

7

BibTex

@article{BUT125392,
  author="Pavel {Rovnaník} and Hana {Šimonová} and Libor {Topolář} and Patrik {Bayer} and Pavel {Schmid} and Zbyněk {Keršner}",
  title="Carbon nanotube reinforced alkali-activated slag mortars",
  journal="Construction and building materials",
  year="2016",
  volume="119",
  number="1",
  pages="223--229",
  doi="10.1016/j.conbuildmat.2016.05.051",
  issn="0950-0618"
}