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6864471 
Journal Article 
Experimental insight into spalling behavior of concrete tunnel linings under fire loading 
Zeiml, M; Lackner, R; Mang, HA; , 
2009 
Yes 
Acta Geotechnica
ISSN: 1861-1125 
SPRINGER HEIDELBERG 
HEIDELBERG 
295-308 
WOS:000207722200005 
New experimental insight into the spalling behavior of concrete in fire conditions is presented in this paper. Spalling was recorded by a high-speed camera. The slow-motion sequences allow us to determine the size, shape, and velocity of the spalled-off pieces. With this information at hand, the released energy associated with every spalling event is computed and compared to the energies associated with pore-pressure and thermal-stress spalling. This comparison provides new insight into the impact of the various thermal, mechanical, and hydral processes controlling concrete spalling. 
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