Publication detail

Comparing the Properties of Polypropylene Fibers Contained in Ordinary and Lightweight Concrete Using Three-Point Bending Tests with Stress Concentrator and Acoustic Emission Method

TRČKA, T. LÁNÍK, J. MACKŮ, R.

Original Title

Comparing the Properties of Polypropylene Fibers Contained in Ordinary and Lightweight Concrete Using Three-Point Bending Tests with Stress Concentrator and Acoustic Emission Method

English Title

Comparing the Properties of Polypropylene Fibers Contained in Ordinary and Lightweight Concrete Using Three-Point Bending Tests with Stress Concentrator and Acoustic Emission Method

Type

journal article in Web of Science

Language

Czech

Original Abstract

The results of many bending tests of fiber reinforced concrete specimens did not produce a clear answer to the question whether the fibers are activated before the macro-crack. Our diagnostic method is based on the measurement of acoustic emission signals during three-point bending tests of concrete specimens with stress concentrator. Acoustic emission activity measurement could help us to answer the question if the fibers are activated before the macro-crack is able to seen by human eyes. Several groups of concrete samples with various concrete composition formulas have been prepared for our experiment. This contribution describes the prepared concrete composition, measurement system and also includes the experimental results of one concrete samples set.

English abstract

The results of many bending tests of fiber reinforced concrete specimens did not produce a clear answer to the question whether the fibers are activated before the macro-crack. Our diagnostic method is based on the measurement of acoustic emission signals during three-point bending tests of concrete specimens with stress concentrator. Acoustic emission activity measurement could help us to answer the question if the fibers are activated before the macro-crack is able to seen by human eyes. Several groups of concrete samples with various concrete composition formulas have been prepared for our experiment. This contribution describes the prepared concrete composition, measurement system and also includes the experimental results of one concrete samples set.

Keywords

Three-point bending test with stress concentrator; Critical crack mouth opening displacement (CMOD); Load-deflection diagram; Acoustic emission measurement

Key words in English

Three-point bending test with stress concentrator; Critical crack mouth opening displacement (CMOD); Load-deflection diagram; Acoustic emission measurement

Authors

TRČKA, T.; LÁNÍK, J.; MACKŮ, R.

RIV year

2014

Released

1. 1. 2014

Publisher

Trans tech publication

Location

Switzerland

ISBN

1013-9826

Periodical

Key Engineering Materials (print)

Year of study

592-593

Number

1

State

Swiss Confederation

Pages from

537

Pages to

540

Pages count

4

BibTex

@article{BUT106021,
  author="Tomáš {Trčka} and Jaromír {Láník} and Robert {Macků}",
  title="Comparing the Properties of Polypropylene Fibers Contained in Ordinary and Lightweight Concrete Using Three-Point Bending Tests with Stress Concentrator and Acoustic Emission Method",
  journal="Key Engineering Materials (print)",
  year="2014",
  volume="592-593",
  number="1",
  pages="537--540",
  doi="10.4028/www.scientific.net/KEM.592-593.521",
  issn="1013-9826"
}