Detail publikace

Non-destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to High Temperatures

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

Originální název

Non-destructive Schmidt Rebound Hammer Evaluation of the Degradation of Concrete Exposed to High Temperatures

Typ

abstrakt

Jazyk

angličtina

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.

Klíčová slova

Concrete, high temperature, rebound hammer, Original Schmidt N, SilverSchmidt L, compressive strength

Autoři

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

Vydáno

23. 11. 2017

Nakladatel

ČVUT

Místo

Praha

ISBN

978-80-01-06347-7

Kniha

Sanace a rekonstrukce staveb 2017, CRRB - 19th International Conference on Rehabilitation and Reconstrctuon of Building

Strany od

117

Strany do

117

Strany počet

1

BibTex

@misc{BUT142177,
  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 High Temperatures",
  booktitle="Sanace a rekonstrukce staveb 2017, CRRB - 19th International Conference on Rehabilitation and Reconstrctuon of Building",
  year="2017",
  pages="117--117",
  publisher="ČVUT",
  address="Praha",
  isbn="978-80-01-06347-7",
  note="abstract"
}