Experimental investigation of a cement-free shotcrete in case of fire : spalling tendency, thermal and mechanical properties
The existing tunnel structures in Germany are characterised by progressive ageing, which is particularly evident in the tunnels’ inner lining. In addition, under the influence of incisive events and new research results over several years, the government has reviewed and updated some of the guidelines under which these buildings were designed and constructed. If deterioration now requires the repair of a building, these new requirements must be taken into account. This can sometimes lead to a considerable increase in the requirements for operational safety, durability, resistance, or structural fire protection. In the German research project KOINOR a sprayable geopolymer is being developed, which should fulfil the requirements for a tunnel lining regarding the new guidelines. It focusses on high fire resistance as well as high resistance to other concrete-attacking substances, such as chlorides or sulphates. This publication presents fire tests on small-format test specimens for analysing the spalling tendency. Moreover, fire tests on specimens with thermal elements are presented in order to assess the temperature distribution in the structural component. In addition, investigations of material properties before and after the fire tests are compared in order to be able to determine the suitability of the developed cement-free shotcrete as a fire protection coating. Furthermore, necessary investigations regarding the bond behaviour of the coating and the load-bearing component will be discussed.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/isbn/9789189049895
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Corporate Authors:
RISE Research Institutes of Sweden
, Sweden -
Authors:
- Hammer, Anna-Lena
- Vollmann, Götz
- Kleen, Eugen
- Uhlmann, Dirk
- Weiner, Thorsten
- BUDNIK, JOACHIM
- Rengshausen, Thomas
- Thienert, Christian
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Conference:
- Ninth International Symposium on Tunnel Safety and Security
- Location: Munich , Germany
- Date: 2020-3-11 to 2020-3-13
- Publication Date: 2020
Language
- English
Media Info
- Pagination: pp 585-600
- Monograph Title: Proceedings from the Ninth International Symposium on Tunnel Safety and Security, Munich, Germany, March 11-13, 2020
Subject/Index Terms
- TRT Terms: Concrete; Fire; Laboratories; Properties of materials; Spalling; Temperature; Tests; Tunnels
- ITRD Terms: 4755: Concrete; 1624: Fire; 6237: Laboratory (not an organization); 5925: Properties; 5231: Spalling; 6722: Temperature; 6255: Test; 3374: Tunnel
- Subject Areas: Bridges and other structures; Materials; I32: Concrete;
Filing Info
- Accession Number: 01845968
- Record Type: Publication
- Source Agency: Swedish National Road and Transport Research Institute (VTI)
- ISBN: 9789189049895
- Files: ITRD, VTI
- Created Date: May 20 2022 2:06PM