Abstract
Our study was directed to the analysis of the influence of various types of cements on the behaviour of concrete at high temperatures. In our experiments binary blended and ordinary Portland cements were involved: two Portland cements with different clinker compositions and Portland cements containing pozzolanic additives as replacement of clinkers. In the first part of the study we focused on the influence of cement types where cement paste specimens were investigated. Then, based on the results of cement paste specimens, concretes specimens were prepared with some selected types of cements. Most important observation of our experimental study was that the pozzolanic additives and their increased amount have a favourable effect on the heat resistance (fire resistance) properties of concrete.
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Acknowledgements
An OTKA-PD-109129 Grant is acknowledged. I. M. S. thanks for a János Bolyai Research Fellowship of the Hungarian Academy of Sciences. Authors acknowledge the support by the Hungarian Research Grant NVKP_16-1-0019 “Development of concrete products with improved resistance to chemical corrosion, fire or freeze–thaw”.
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Lublóy, É., Kopecskó, K., Balázs, G.L. et al. Improved fire resistance by using Portland-pozzolana or Portland-fly ash cements. J Therm Anal Calorim 129, 925–936 (2017). https://doi.org/10.1007/s10973-017-6245-0
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DOI: https://doi.org/10.1007/s10973-017-6245-0