Publication result detail

Fracture properties of concrete specimens made from alkali activated binders.

ŠIMONOVÁ, H.; KUCHARCZYKOVÁ, B.; TOPOLÁŘ, L.; BÍLEK, V., Jr.; KERŠNER, Z.

Original Title

Fracture properties of concrete specimens made from alkali activated binders.

English Title

Fracture properties of concrete specimens made from alkali activated binders.

Type

Paper in proceedings (conference paper)

Original Abstract

The aim of this paper is to quantify crack initiation and other fracture properties – effective fracture toughness and specific fracture energy – of two types of concrete with an alkali activated binder. The beam specimens with a stress concentrator were tested in a three-point bending test after 28, 90, and 365 days of maturing. Records of fracture tests in the form of load versus deflection (P–d) diagrams were evaluated using effective crack model and work-of-fracture method and load versus mouth crack opening displacement (P–CMOD) diagrams were evaluated using the Double-K fracture model. The initiation of cracks during the fracture tests for all ages was also monitored by the acoustic emission method. The higher value of monitored mechanical fracture parameters of concrete with alkali activated blast furnace slag were achieved with substitution blast furnace slag by low calcium fly ash in comparison with substitution by cement kiln dust.

English abstract

The aim of this paper is to quantify crack initiation and other fracture properties – effective fracture toughness and specific fracture energy – of two types of concrete with an alkali activated binder. The beam specimens with a stress concentrator were tested in a three-point bending test after 28, 90, and 365 days of maturing. Records of fracture tests in the form of load versus deflection (P–d) diagrams were evaluated using effective crack model and work-of-fracture method and load versus mouth crack opening displacement (P–CMOD) diagrams were evaluated using the Double-K fracture model. The initiation of cracks during the fracture tests for all ages was also monitored by the acoustic emission method. The higher value of monitored mechanical fracture parameters of concrete with alkali activated blast furnace slag were achieved with substitution blast furnace slag by low calcium fly ash in comparison with substitution by cement kiln dust.

Keywords

alkali aktivated binder, fracture test, acoustic emission, fly ash, cment kiln dust

Key words in English

alkali aktivated binder, fracture test, acoustic emission, fly ash, cment kiln dust

Authors

ŠIMONOVÁ, H.; KUCHARCZYKOVÁ, B.; TOPOLÁŘ, L.; BÍLEK, V., Jr.; KERŠNER, Z.

RIV year

2018

Released

15.09.2017

Publisher

IOP Publishing

Location

Bristol

Book

BESTInfra 2017

ISBN

1757-899X

Periodical

IOP Conference Series: Materials Science and Engineering

Volume

236

Number

1

State

United Kingdom of Great Britain and Northern Ireland

Pages from

1

Pages to

6

Pages count

6

URL

http://iopscience.iop.org/article/10.1088/1757-899X/236/1/012068

Full text in the Digital Library

http://hdl.handle.net/11012/137173

BibTex

@inproceedings{BUT139674,
  author="Hana {Šimonová} and Barbara {Kucharczyková} and Libor {Topolář} and Vlastimil {Bílek} and Zbyněk {Keršner}",
  title="Fracture properties of concrete specimens made from alkali activated binders.",
  booktitle="BESTInfra 2017",
  year="2017",
  journal="IOP Conference Series: Materials Science and Engineering",
  volume="236",
  number="1",
  pages="1--6",
  publisher="IOP Publishing",
  address="Bristol",
  doi="10.1088/1757-899X/236/1/012068",
  url="http://iopscience.iop.org/article/10.1088/1757-899X/236/1/012068"
}

Documents

Šimonová_2017_IOP_Conf._Ser.__Mater._Sci._Eng._236_012068