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ŠIMONOVÁ, H. TRČKA, T. BEJČEK, M. ROZSYPALOVÁ, I. DANĚK, P. KERŠNER, Z.
Original Title
Detailed Determination of Mechanical Fracture Parameters of Concrete after Fire Experiments
Type
conference paper
Language
English
Original Abstract
Detailed Determination of Mechanical Fracture Parameters of Concrete after Fire ExperimentsThe aim of this paper is to describe the procedure of determining the mechanical fracture parameters of selected concrete specimens taken from panels after the fire experiments. The records (in form load vs displacement diagrams) of three-point bending fracture tests of these specimens with initial stress concentrators was first advanced corrected and subsequently evaluated using the Effective Crack Model and the work-of-fracture method. The increasing temperatures during the fire experiments ranging between 550 to 1000 °C led to a decrease of modulus of elasticity and fracture toughness values and to the increase of fracture energy value. The 2D laser profile scanner was used to estimate the degree of complexity of fracture surfaces; its statistical dependence on the mechanical fracture parameters proved to be moderate – the absolute value of the correlation coefficient was about 0.5 [–].
Keywords
Concrete, high temperature, fracture test, 2D laser profile scanner.
Authors
ŠIMONOVÁ, H.; TRČKA, T.; BEJČEK, M.; ROZSYPALOVÁ, I.; DANĚK, P.; KERŠNER, Z.
Released
28. 2. 2018
Publisher
Trans Tech Publications
Location
Switzerland
ISBN
978-3-0357-1284-1
Book
Solid State Phenomena: 24th Concrete Days
1012-0394
Periodical
Solid State Phenomena
Year of study
272
State
Swiss Confederation
Pages from
220
Pages to
225
Pages count
6
BibTex
@inproceedings{BUT146230, author="Hana {Šimonová} and Tomáš {Trčka} and Michal {Bejček} and Iva {Čairović} and Petr {Daněk} and Zbyněk {Keršner}", title="Detailed Determination of Mechanical Fracture Parameters of Concrete after Fire Experiments", booktitle="Solid State Phenomena: 24th Concrete Days", year="2018", journal="Solid State Phenomena", volume="272", pages="220--225", publisher="Trans Tech Publications", address="Switzerland", doi="10.4028/www.scientific.net/SPP.272.220", isbn="978-3-0357-1284-1", issn="1012-0394" }