Publication result detail

Fracture Process in a Fine – Grained Cement – Based Composite Monitored with Nanoindentation and Acoustic Emission

NĚMEČEK, J.; KERŠNER, Z.; SCHMID, P.; HAVLÍKOVÁ, I.; ŠIMONOVÁ, H.; TOPOLÁŘ, L.; VESELÝ, V.; ROVNANÍK, P.

Original Title

Fracture Process in a Fine – Grained Cement – Based Composite Monitored with Nanoindentation and Acoustic Emission

English Title

Fracture Process in a Fine – Grained Cement – Based Composite Monitored with Nanoindentation and Acoustic Emission

Type

Paper in proceedings (conference paper)

Original Abstract

The contribution is devoted to investigation of the fracture process zone (FPZ) in a finegrained cement-based composite made from hydrated Portland cement. Particularly, experimental investigations and description of the stable crack propagation using fracture mechanics model are conducted. Three-point bending tests on small composite beams with a central edge notch were performed. The damage due to fracture was monitored by means of nanoindentation performed around the macroscopically observable crack. Acoustic emission events were recorded during the three-point bending test and correlated with load–displacement data. The beneficial effect on the fracture resistance of fine-grained mortar specimens compared to plain cement pastes was quantified.

English abstract

The contribution is devoted to investigation of the fracture process zone (FPZ) in a finegrained cement-based composite made from hydrated Portland cement. Particularly, experimental investigations and description of the stable crack propagation using fracture mechanics model are conducted. Three-point bending tests on small composite beams with a central edge notch were performed. The damage due to fracture was monitored by means of nanoindentation performed around the macroscopically observable crack. Acoustic emission events were recorded during the three-point bending test and correlated with load–displacement data. The beneficial effect on the fracture resistance of fine-grained mortar specimens compared to plain cement pastes was quantified.

Keywords

Fracture process zone, cementitious composite, nanoindentation, acoustic emission

Key words in English

Fracture process zone, cementitious composite, nanoindentation, acoustic emission

Authors

NĚMEČEK, J.; KERŠNER, Z.; SCHMID, P.; HAVLÍKOVÁ, I.; ŠIMONOVÁ, H.; TOPOLÁŘ, L.; VESELÝ, V.; ROVNANÍK, P.

RIV year

2016

Released

17.06.2015

Publisher

Trans Tech publications

Location

Switzerland

ISBN

978-3-03835-555-7

Book

Mechanical properties of Materials from Nano to Micro/Meso-Scale

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Volume

662

State

Swiss Confederation

Pages from

47

Pages to

50

Pages count

4

BibTex

@inproceedings{BUT115157,
  author="Jiří {Němeček} and Zbyněk {Keršner} and Pavel {Schmid} and Ivana {Havlíková} and Hana {Šimonová} and Libor {Topolář} and Václav {Veselý} and Pavel {Rovnaník}",
  title="Fracture Process in a Fine – Grained Cement – Based Composite Monitored with Nanoindentation and Acoustic Emission",
  booktitle="Mechanical properties of Materials from Nano to Micro/Meso-Scale",
  year="2015",
  journal="Key Engineering Materials (print)",
  volume="662",
  pages="47--50",
  publisher="Trans Tech publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.662.47",
  isbn="978-3-03835-555-7",
  issn="1013-9826"
}