Abstract
The paper describes experimental work carried out at Imperial College by the second author under the supervision of the first. The aim was to select a concrete mix which could perform as well at high temperatures as at ambient temperature. The testing was carried out on cement matrix and also on cementitious materials with different percentage replacements of the cement. In order to optimize the performance of concrete, various thermally stable aggregates were used in the mixes tested.
The type of concrete described would be suitable for buildings which are required to have an enhanced fire endurance. Other structures which would benefit from concrete with a high performance at elevated temperatures are chimneys, nuclear and conventional reactors, and launching pads and pavements for vertical take-off aircraft.
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References
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Sullivan, P.J.E., Sharshar, R. The performance of concrete at elevated temperatures (as measured by the reduction in compressive strength). Fire Technol 28, 240–250 (1992). https://doi.org/10.1007/BF01857693
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DOI: https://doi.org/10.1007/BF01857693