Publication detail

Behaviour of concrete in tunels and undeground concstructions in case of fire

BODNÁROVÁ, L. SITEK, L. VÁLEK, J.

Original Title

Behaviour of concrete in tunels and undeground concstructions in case of fire

English Title

Behaviour of concrete in tunels and undeground concstructions in case of fire

Type

conference paper

Language

en

Original Abstract

The problem of cement concrete resistance to high temperatures became topical after more frequent car accidents, heavy good vehicles in particular, in tunnels with an outbreak of fire as a result of an accident. Tunnel lining is exposed to intensive temperature released as a result of fire with the temperatures high above 1000 C. The inner part of lining is exposed to various temperature intensities depending on the distance from the fire. Owing to water steam expansion in concrete as a result of temperature-time exposure, concrete surface is cracking and concrete layers are peeled off from various depths and thus the lining is secondary damaged. Appropriate composition of concrete, selection of binder of cement composite material and selection aggregate, additions and/or adding dispersed polypropylene fiber reinforcement can reduce destructive action of high temperature.

English abstract

The problem of cement concrete resistance to high temperatures became topical after more frequent car accidents, heavy good vehicles in particular, in tunnels with an outbreak of fire as a result of an accident. Tunnel lining is exposed to intensive temperature released as a result of fire with the temperatures high above 1000 C. The inner part of lining is exposed to various temperature intensities depending on the distance from the fire. Owing to water steam expansion in concrete as a result of temperature-time exposure, concrete surface is cracking and concrete layers are peeled off from various depths and thus the lining is secondary damaged. Appropriate composition of concrete, selection of binder of cement composite material and selection aggregate, additions and/or adding dispersed polypropylene fiber reinforcement can reduce destructive action of high temperature.

Keywords

tunnel, concrete, high temperature, fire

RIV year

2014

Released

25.06.2014

Location

Ostrava

ISBN

978-80-86407-49-4

Book

GECO 2014

Edition number

5

Pages from

85

Pages to

86

Pages count

2

Documents

BibTex


@inproceedings{BUT112832,
  author="Lenka {Bodnárová} and Libor {Sitek} and Jaroslav {Válek}",
  title="Behaviour of concrete in tunels and undeground concstructions in case of fire",
  annote="The problem of cement concrete resistance to high temperatures became topical after more frequent car accidents, heavy good vehicles in particular, in tunnels with an outbreak of fire as a result of an accident. Tunnel lining is exposed to intensive temperature released as a result of fire with the temperatures high above 1000  C. The inner part of lining is exposed to various temperature intensities depending on the distance from the fire. Owing to water steam expansion in concrete as a result of temperature-time exposure, concrete surface is cracking and concrete layers are peeled off from various depths and thus the lining is secondary damaged. Appropriate composition of concrete, selection of binder of cement composite material and selection aggregate, additions and/or adding dispersed polypropylene fiber reinforcement can reduce destructive action of high temperature.",
  booktitle="GECO 2014",
  chapter="112832",
  howpublished="electronic, physical medium",
  year="2014",
  month="june",
  pages="85--86",
  type="conference paper"
}