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111. Fire spalling of self-compacting concrete



Title: 111. Fire spalling of self-compacting concrete
Author(s): L. Boström, R. Jansson
Paper category : conference
Book title: 5th International RILEM Symposium on Self-Compacting Concrete
Editor(s): G. De Schutter and V. Boel
Print-ISBN: 978-2-35158-047-9
e-ISBN: 978-2-35158-088-2
Publisher: RILEM Publications SARL
Publication year: 2007
Pages: 741 - 745
Total Pages: 5
Nb references: 5
Language: English


Abstract: A large experimental study of self-compacting concrete and its behaviour when exposed to fire is in progress. An unambiguous result from the study so far is that self-compacting concrete must be protected if fire spalling shall be avoided. In principal have all examined specimens without protection spalled more or less in the tests. One promising protective method is by using polypropylene fibres. Different fibres have been examined and the types studied have all showed good results. The necessary amount of fibres is not fully established yet, but it seems that a limit lies around 1-1.5 kg/m3 fibres. If less fibres are used there may be spalling in a fire situation. This depends, of course, on the type and quality of concrete. It has not yet been possible to determine any special features of the concrete such as water-powder ratio or filler content which decreases the risk for spalling. One factor that have an effect is the loading. The probability of spalling is higher for a specimen loaded in compression compared to an unloaded specimen. There are however no evidence that the probability or amount of spalling increases with increased load level.


Online publication: 2009-06-16
Publication type : full_text
Public price (Euros): 0.00


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