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2022 | OriginalPaper | Chapter

Influence of Microfiber on Fire Resistance of Reinforced Concrete Tunnel Tubings

Authors : Vladimir Golovanov, Andrey Pehotikov, Marina Gravit, Nikolay Novikov, Vladimir Pavlov

Published in: Safety in Aviation and Space Technologies

Publisher: Springer International Publishing

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Abstract

The fire resistance of reinforced concrete tunnel linings of underground structures depends to a large extent on the explosive destruction of concrete under the influence of high fire temperatures on the surface of the tunnel lining. The use of reinforced-concrete tunnel liners made of fiber concrete with polypropylene fibers for the tunnel enclosing structures will allow to reduce considerably the cost of fire protection device and shorten the construction period. Reinforced concrete tunnel tubes made of heavy concrete with 6% moisture content and 1 kg/m3 of polypropylene fiber added have been tested. Large-scale fire tests on a specially made stand were conducted at loading of samples with vertical 490.5 kN and horizontal 294.3 kN loads. As a result of experimental studies, it was found, that the fire resistance limit of the structure was REI 120.

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Metadata
Title
Influence of Microfiber on Fire Resistance of Reinforced Concrete Tunnel Tubings
Authors
Vladimir Golovanov
Andrey Pehotikov
Marina Gravit
Nikolay Novikov
Vladimir Pavlov
Copyright Year
2022
DOI
https://doi.org/10.1007/978-3-030-85057-9_24

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