Aggregate is a significant factor that affects the behaviour of high-strength concrete (HSC) in fire. Herein, the during-fire damage, namely explosive spalling, of 33 HSC specimens was experimentally studied to identify the effect of aggregate on HSC in fire. Four types of aggregate including dolomite, quartzitic gravel, granite and sandstone were mixed in the concrete specimens and their design strengths were all 90 MPa. In the heating tests, the fully saturated specimens were subjected to an oven-heating condition (2°C/min) or a simulated standard fire condition (BS 476) respectively. Results indicated that there was no effect of the type of aggregate on the spalling mode of HSC in fire. However, obvious effects of various types of aggregate on the spalling degree of HSC in fire were pointed out, and subsequently a spalling self-prevention concept was introduced to explain it.
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June 2007
Research Article|
June 01 2007
Effect of aggregate on high-strength concrete in fire Available to Purchase
X. Yan;
X. Yan
*
School of Civil Engineering, Harbin Institute of Technology
Harbin, 150090, P.R. China
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H. Li;
H. Li
*
School of Civil Engineering, Harbin Institute of Technology
Harbin, 150090, P.R. China
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Y.-L. Wong
Y.-L. Wong
†
Department of Civil and Structural Engineering, The Hong Kong Polytechnic University
Hong Kong, P.R. China
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Publisher: Emerald Publishing
Received:
December 13 2005
Revision Received:
August 14 2006
Accepted:
January 05 2007
Online ISSN: 1751-763X
Print ISSN: 0024-9831
© 2007 Thomas Telford Ltd
2007
Magazine of Concrete Research (2007) 59 (5): 323–328.
Article history
Received:
December 13 2005
Revision Received:
August 14 2006
Accepted:
January 05 2007
Citation
Yan X, Li H, Wong Y (2007), "Effect of aggregate on high-strength concrete in fire". Magazine of Concrete Research, Vol. 59 No. 5 pp. 323–328, doi: https://doi.org/10.1680/macr.2007.59.5.323
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