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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
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" }