文章基本信息

标题：Comparison of Fire Resistant Geopolymers for Passive Fire Protection of Concrete Tunnel Linings
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作者：Konstantinos Sakkas ; D. Panias ; P. Nomikos 等
期刊名称：Open Access Library Journal
印刷版ISSN：2333-9705
电子版ISSN：2333-9721
出版年度：2017
卷号：4
期号：1
页码：1-15
DOI：10.4236/oalib.1103327
语种：English
出版社：Scientific Research Pub
摘要：Fire resistant geopolymers are developed and the performance under thermal loading is examined and compared in this paper. The geopolymers were prepared by mixing the solid phase, metallurgical slag and metakaolin with a highly alkaline potassium hydroxide aqueous phase in order to create a paste that was subsequently cured at 70℃ for a certain period of time. The developed materials were tested for the mechanical, physical and thermal properties. The behaviour of the geopolymers upon exposure on fire was studied following the EFNARC guidelines for testing of passive fire protection for concrete tunnels linings. The geopolymers were subjected to the most severe fire scenario, the Rijks Water Staat (RWS) temperature-time curve. Both geopolymers appeared great behaviour after the test reaching temperature lower than the RWS test requirement, proving the ability of both materials to work successfully as an efficient thermal barrier. Thus, the concrete slab protected by the geopolymers did not appear any form of spalling or degradation of its compressive strength.
关键词：GeopolymerTunnel LiningsPassive Fire Protection