Publication result detail

Experimental evaluation of the effect of carbon fibres on acoustic emission parameters obtained during compressive strength tests of alkaliactivated slag composites

TOPOLÁŘ, L.; ROVNANÍK, P.; SCHMID, P.

Original Title

Experimental evaluation of the effect of carbon fibres on acoustic emission parameters obtained during compressive strength tests of alkaliactivated slag composites

English Title

Experimental evaluation of the effect of carbon fibres on acoustic emission parameters obtained during compressive strength tests of alkaliactivated slag composites

Type

Paper in proceedings (conference paper)

Original Abstract

The generation of acoustic emission signals is directly associated with formation of cracks in materials during loading. This paper deals with possibilities of acoustic emission method application as the tool for the identification of structural damage in alkali-activated composite materials during compressive strength test. In experimental part, the three piezoelectric sensors were occupied for the continuous record of emission signals of stressed material feedback on applied mechanical load in real time. Detection of specific acoustic emission signals in the course of deformation of the test samples indicates that irreversible structural changes occur in the composite. Four different mixtures of alkali-activated slag mortars were prepared, the first one was reference without the addition of carbon fibres. The others contain the carbon fibres in amount 0.5, 1.0 and 2.0 % from the weight of the slag.

English abstract

The generation of acoustic emission signals is directly associated with formation of cracks in materials during loading. This paper deals with possibilities of acoustic emission method application as the tool for the identification of structural damage in alkali-activated composite materials during compressive strength test. In experimental part, the three piezoelectric sensors were occupied for the continuous record of emission signals of stressed material feedback on applied mechanical load in real time. Detection of specific acoustic emission signals in the course of deformation of the test samples indicates that irreversible structural changes occur in the composite. Four different mixtures of alkali-activated slag mortars were prepared, the first one was reference without the addition of carbon fibres. The others contain the carbon fibres in amount 0.5, 1.0 and 2.0 % from the weight of the slag.

Keywords

acoustic emission method, alkali activation, three-point bending test

Key words in English

acoustic emission method, alkali activation, three-point bending test

Authors

TOPOLÁŘ, L.; ROVNANÍK, P.; SCHMID, P.

RIV year

2019

Released

12.07.2018

Publisher

IOP Publishing

Location

Bristol

Book

International Conference Building Materials, Products and Technologies

ISBN

1757-8981

Periodical

IOP Conference Series: Materials Science and Engineering

Volume

379

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

Full text in the Digital Library

http://hdl.handle.net/11012/137120

BibTex

@inproceedings{BUT148850,
  author="Libor {Topolář} and Pavel {Rovnaník} and Pavel {Schmid}",
  title="Experimental evaluation of the effect of carbon fibres on acoustic emission parameters obtained during compressive strength tests of alkaliactivated slag composites",
  booktitle="International Conference Building Materials, Products and Technologies",
  year="2018",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="379",
  number="1",
  pages="1--6",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/379/1/012037",
  issn="1757-8981"
}

Documents

Topolář_2018_IOP_Conf._Ser.__Mater._Sci._Eng._379_012037