Detail publikačního výsledku

Non-Destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to Elevated Temperatures

ROZSYPALOVÁ, I.; DANĚK, P.; SACHR, J.; KAREL, O.

Originální název

Non-Destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to Elevated Temperatures

Anglický název

Non-Destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to Elevated Temperatures

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Concrete suffers significant changes in its internal structure due to fire exposition. Chemical and physical transformations cause further changes in its properties. The research focuses on non-destructive Schmidt rebound hammer testing of experimental concrete panels exposed to high temperature. Five concrete panels with the dimensions of 2300 × 1300 × 150 mm were made from concrete of ordinary fire-resistance. According to the standard temperature curve in EN 1991-1-2, the specimens were heated up to the target temperature (550, 600, 800 and 1000 °C) and afterwards, the given thermal load was maintained for 60 more minutes. The equation of the standard temperature curve represents a common fire by which a building structure may be affected in rare cases. The rebound hammer SilverSchmidt L and Original Schmidt N was used for determining the rebound number. Rebound number area charts of all experimental panels were created in order to identify most damaged areas of the concrete due to the effects of high temperatures. Differences between values of destructive and non-destructive compressive strength were determined.

Anglický abstrakt

Concrete suffers significant changes in its internal structure due to fire exposition. Chemical and physical transformations cause further changes in its properties. The research focuses on non-destructive Schmidt rebound hammer testing of experimental concrete panels exposed to high temperature. Five concrete panels with the dimensions of 2300 × 1300 × 150 mm were made from concrete of ordinary fire-resistance. According to the standard temperature curve in EN 1991-1-2, the specimens were heated up to the target temperature (550, 600, 800 and 1000 °C) and afterwards, the given thermal load was maintained for 60 more minutes. The equation of the standard temperature curve represents a common fire by which a building structure may be affected in rare cases. The rebound hammer SilverSchmidt L and Original Schmidt N was used for determining the rebound number. Rebound number area charts of all experimental panels were created in order to identify most damaged areas of the concrete due to the effects of high temperatures. Differences between values of destructive and non-destructive compressive strength were determined.

Klíčová slova

Compressive Strength, Concrete, High Temperature, Original Schmidt N, Rebound Hammer, SilverSchmidt L

Klíčová slova v angličtině

Compressive Strength, Concrete, High Temperature, Original Schmidt N, Rebound Hammer, SilverSchmidt L

Autoři

ROZSYPALOVÁ, I.; DANĚK, P.; SACHR, J.; KAREL, O.

Rok RIV

2019

Vydáno

23.08.2018

Nakladatel

Trans Tech Publications Ltd

Místo

Switzerland

Kniha

Key Engineering Materials - Rehabilitation and Reconstruction of Buildings

ISSN

1013-9826

Periodikum

Key Engineering Materials (print)

Svazek

776

Stát

Švýcarská konfederace

Strany od

55

Strany do

58

Strany počet

4

BibTex

@inproceedings{BUT149625,
  author="Iva {Čairović} and Petr {Daněk} and Jiří {Sachr} and Ondřej {Balkanský}",
  title="Non-Destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to Elevated Temperatures",
  booktitle="Key Engineering Materials - Rehabilitation and Reconstruction of Buildings",
  year="2018",
  journal="Key Engineering Materials (print)",
  volume="776",
  number="776",
  pages="55--58",
  publisher="Trans Tech Publications Ltd",
  address="Switzerland",
  doi="10.4028/www.scientific.net/KEM.776.55",
  issn="1013-9826"
}