Detail publikace

Failure Monitoring of Mechanically Loaded Concrete Blocks by Electromagnetic and Acoustic Emission Methods

TRČKA, T. KOKTAVÝ, P. KNÁPEK, A.

Originální název

Failure Monitoring of Mechanically Loaded Concrete Blocks by Electromagnetic and Acoustic Emission Methods

Anglický název

Failure Monitoring of Mechanically Loaded Concrete Blocks by Electromagnetic and Acoustic Emission Methods

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

čeština

Originální abstrakt

Electromagnetic emission and acoustic emission methods are promising methods to study the generation and behavior of cracks. Emission signals appear during crack generation when a solid is exposed to mechanical loading. Our study in this paper is focused on specially prepared concrete blocks. Four groups of concrete samples with various concrete composition formulas have been prepared for two-channel measurement on our experimental set-up. Concrete blocks from each prepared group were measured for defined loading conditions (especially for linearly increasing uniaxial compression up to the load of 80 kN with the rate of 11 N/s.). The response of concrete specimens to applied mechanical load was continuously monitored by recording electromagnetic and acoustic emission signals. The main aim of our experiment was to determine how the crack generation intensity depends on the aggregate size in tested concrete samples. Our pilot experimental results show (as we expected) that the generated cracks intensity is significantly affected by the aggregate amount and size. For more detailed studies additional measurements on a larger number of concrete samples with defined composition formulas will be performed.

Anglický abstrakt

Electromagnetic emission and acoustic emission methods are promising methods to study the generation and behavior of cracks. Emission signals appear during crack generation when a solid is exposed to mechanical loading. Our study in this paper is focused on specially prepared concrete blocks. Four groups of concrete samples with various concrete composition formulas have been prepared for two-channel measurement on our experimental set-up. Concrete blocks from each prepared group were measured for defined loading conditions (especially for linearly increasing uniaxial compression up to the load of 80 kN with the rate of 11 N/s.). The response of concrete specimens to applied mechanical load was continuously monitored by recording electromagnetic and acoustic emission signals. The main aim of our experiment was to determine how the crack generation intensity depends on the aggregate size in tested concrete samples. Our pilot experimental results show (as we expected) that the generated cracks intensity is significantly affected by the aggregate amount and size. For more detailed studies additional measurements on a larger number of concrete samples with defined composition formulas will be performed.

Klíčová slova

electromagnetic emission; acoustic emission; cracks; concrete blocks; failure monitoring

Klíčová slova v angličtině

electromagnetic emission; acoustic emission; cracks; concrete blocks; failure monitoring

Autoři

TRČKA, T.; KOKTAVÝ, P.; KNÁPEK, A.

Rok RIV

2012

Vydáno

11. 10. 2012

Místo

Brno

ISBN

978-80-214-4594-9

Kniha

New Trends in Physics, NTF2012, Proceedings of the conference

Edice

první

Číslo edice

1

Strany od

86

Strany do

89

Strany počet

4

BibTex

@inproceedings{BUT96044,
  author="Tomáš {Trčka} and Pavel {Koktavý} and Alexandr {Knápek}",
  title="Failure Monitoring of Mechanically Loaded Concrete Blocks by Electromagnetic and Acoustic Emission Methods",
  booktitle="New Trends in Physics, NTF2012, Proceedings of the conference",
  year="2012",
  series="první",
  number="1",
  pages="86--89",
  address="Brno",
  isbn="978-80-214-4594-9"
}