Publication detail

The Assessment of High-Temperature Degraded Concrete Specimens of Different Mixtures by Acoustic Emission Method during Three-Point Bending Test and Pulse Velocity Method in Comparison with Destructive Tests

TOPOLÁŘ, L. DVOŘÁK, R. PAZDERA, L.

Original Title

The Assessment of High-Temperature Degraded Concrete Specimens of Different Mixtures by Acoustic Emission Method during Three-Point Bending Test and Pulse Velocity Method in Comparison with Destructive Tests

Type

conference paper

Language

English

Original Abstract

. One of the advantages of concrete over other building materials is its inherent fire-resistive properties. The concrete structural components still must be able to withstand dead and live loads without collapse even though the rise in temperature causes a decrease in the strength and modulus of elasticity for concrete and steel reinforcement. In addition, fully developed fires cause expansion of structural components and the resulting stresses and strains must be resisted. This paper reports the results of measurements by Acoustic Emission method during three-point bending test on concrete specimens. The Acoustic emission method is a non-destructive technique used widely for structural health monitoring purposes of structures. The sensors are mounted by beeswax on the surface of the material or structure to record the motion of the surface under the elastic excitation of the cracking sources. The concrete specimens were heated in a programmable laboratory furnace at a heating rate of 5 °C/min. The specimens were loaded at six temperatures, 200 °C, 400 °C, 600 °C, 800 °C, 1000 °C, and 1200 °C maintained for 60 minutes. The results are obtained in the laboratory.

Keywords

acoustic emission method, concrete, three-point bending test, high-temperature degradation, destructive tests, pulse velocity method

Authors

TOPOLÁŘ, L.; DVOŘÁK, R.; PAZDERA, L.

Released

10. 10. 2017

Publisher

Trans Tech Publications

Location

Switzerland

ISBN

978-3-0357-1157-8

Book

Binders, Materials and Technologies in Modern Construction III

ISBN

0255-5476

Periodical

Materials Science Forum

Year of study

908

State

Swiss Confederation

Pages from

88

Pages to

93

Pages count

6

URL

https://www.scientific.net/Paper/Preview/521173

BibTex

@inproceedings{BUT139028,
  author="Libor {Topolář} and Richard {Dvořák} and Luboš {Pazdera}",
  title="The Assessment of High-Temperature Degraded Concrete Specimens of Different Mixtures by Acoustic Emission Method during Three-Point Bending Test and Pulse Velocity Method in Comparison with Destructive Tests",
  booktitle="Binders, Materials and Technologies in Modern Construction III",
  year="2017",
  journal="Materials Science Forum",
  volume="908",
  pages="88--93",
  publisher="Trans Tech Publications",
  address="Switzerland",
  doi="10.4028/www.scientific.net/MSF.908.88",
  isbn="978-3-0357-1157-8",
  issn="0255-5476",
  url="https://www.scientific.net/Paper/Preview/521173"
}