Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/17193
Title: Performance of metakaolin concrete at elevated temperatures
Authors: Poon, CS 
Azhar, S
Anson, M
Wong, YL
Keywords: Durability
Fire resistance
Fly ash
High strength concrete
Metakaolin
Micro-structure
Permeability
Silica fume
Spalling
Issue Date: 2003
Publisher: Pergamon Press
Source: Cement and concrete composites, 2003, v. 25, no. 1, p. 83-89 How to cite?
Journal: Cement and concrete composites 
Abstract: An experimental investigation was conducted to evaluate the performance of metakaolin (MK) concrete at elevated temperatures up to 800 ¢XC. Eight normal and high strength concrete (HSC) mixes incorporating 0%, 5%, 10% and 20% MK were prepared. The residual compressive strength, chloride-ion penetration, porosity and average pore sizes were measured and compared with silica fume (SF), fly ash (FA) and pure ordinary Portland cement (OPC) concretes. It was found that after an increase in compressive strength at 200 ¢XC, the MK concrete suffered a more severe loss of compressive strength and permeability-related durability than the corresponding SF, FA and OPC concretes at higher temperatures. Explosive spalling was observed in both normal and high strength MK concretes and the frequency increased with higher MK contents.
URI: http://hdl.handle.net/10397/17193
ISSN: 0958-9465
EISSN: 1873-393X
DOI: 10.1016/S0958-9465(01)00061-0
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