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  • 1 Institute of Mineral Building Materials ul. Oświęcimska 21 45-641 Opole Poland
  • 2 University of Mining and Metallurgy al. Mickiewicza 30 30-059 Kraków Poland
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Abstract  

The belite material produced from limestone and waste silica was the subject of numerous investigations. In order to improve the hydraulic activity, some amount of barite was added to the raw mixture. The properties of belite phase were studied by use of differential thermal analysis, calorimetry and other methods. The influence of barium on the hydraulic activity of belite has been thus confirmed. The hydraulic activity increase in the presence of barium depends on the stabilizing action of additive accompanied by the proper thermal treatment in the α′-Ca2SiO4 stability range.

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