Fire Performance of Water-Cooled GFRP Columns. II: Postfire Investigation
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VIEW THE ORIGINAL ARTICLEPublication: Journal of Composites for Construction
Volume 15, Issue 3
Abstract
The postfire mechanical performances of water-cooled full-scale GFRP cellular columns subjected to axial compression were evaluated after exposure to an ISO-834 fire from one side for periods of 60 and 120 mins. The elastic modulus and postfire buckling loads exhibited significant recovery after cooling because of the partial reversibility of glass transition. Existing methods to predict ultimate loads based on experimental buckling curves have proved inaccurate. Ultimate loads were accurately predicted, however, based on a shear failure criterion and by taking large initial imperfections caused by fire damage into account. Recently developed models to predict time- and temperature-dependent material and postfire properties showed good agreement with the experimental results and were thus further validated.
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Acknowledgments
The authors would like to thank the Swiss National Science Foundation for its financial support (Grant No. NSF200020-117592/1).
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Information
Published In
Journal of Composites for Construction
Volume 15 • Issue 3 • June 2011
Pages: 413 - 421
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Aug 3, 2010
Accepted: Nov 5, 2010
Published online: Nov 8, 2010
Published in print: Jun 1, 2011
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