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BODNÁROVÁ, L. SITEK, L. VÁLEK, J.
Original Title
Behaviour of concrete in tunels and undeground concstructions in case of fire
Type
conference paper
Language
English
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.
Keywords
tunnel, concrete, high temperature, fire
Authors
BODNÁROVÁ, L.; SITEK, L.; VÁLEK, J.
RIV year
2014
Released
25. 6. 2014
Location
Ostrava
ISBN
978-80-86407-49-4
Book
GECO 2014
Edition number
5
Pages from
85
Pages to
86
Pages count
2
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", booktitle="GECO 2014", year="2014", number="5", pages="85--86", address="Ostrava", isbn="978-80-86407-49-4" }