Detail publikace

The influence of different starting conditions to the hydrothermal formation of tobermorite - influence of silica source and water-to-solid ratio

GALVÁNKOVÁ, L. BARTONÍČKOVÁ, E. OPRAVIL, T.

Originální název

The influence of different starting conditions to the hydrothermal formation of tobermorite - influence of silica source and water-to-solid ratio

Anglický název

The influence of different starting conditions to the hydrothermal formation of tobermorite - influence of silica source and water-to-solid ratio

Jazyk

en

Originální abstrakt

In this study, the influence of different starting materials, especially the silica source was studied. Hydrothermal reactions were performed at 180 °C under saturated steam pressure, while the reaction time was three days and C/S ratio of the starting mixture was set to 0.83. For the synthesis of tobermorite, the crystalline silica source with finer particles is favourable. After three days of reaction using silica sand Dorsilit (d50 = 5.3 µm) and w/s ratio in the range 2–5 ml/g tobermorite is the main detected phase in the samples. When amorphous silica sources (industrially prepared micro silica and self-synthesised SixOyOHz from TEOS) were used as starting materials, other C–S–H phases like gyrolite, hillebrandite and clinotobermorite were prepared.

Anglický abstrakt

In this study, the influence of different starting materials, especially the silica source was studied. Hydrothermal reactions were performed at 180 °C under saturated steam pressure, while the reaction time was three days and C/S ratio of the starting mixture was set to 0.83. For the synthesis of tobermorite, the crystalline silica source with finer particles is favourable. After three days of reaction using silica sand Dorsilit (d50 = 5.3 µm) and w/s ratio in the range 2–5 ml/g tobermorite is the main detected phase in the samples. When amorphous silica sources (industrially prepared micro silica and self-synthesised SixOyOHz from TEOS) were used as starting materials, other C–S–H phases like gyrolite, hillebrandite and clinotobermorite were prepared.

Dokumenty

BibTex


@inproceedings{BUT157476,
  author="Lucie {Dlabajová} and Eva {Bartoníčková} and Tomáš {Opravil}",
  title="The influence of different starting conditions to the hydrothermal formation of tobermorite - influence of silica source and water-to-solid ratio",
  annote="In this study, the influence of different starting materials, especially the silica source was studied. Hydrothermal reactions were performed at 180 °C under saturated steam pressure, while the reaction time was three days and C/S ratio of the starting mixture was set to 0.83. For the synthesis of tobermorite, the crystalline silica source with finer particles is favourable. After three days of reaction using silica sand Dorsilit (d50 = 5.3 µm) and w/s ratio in the range 2–5 ml/g tobermorite is the main detected phase in the samples. When amorphous silica sources (industrially prepared micro silica and self-synthesised SixOyOHz from TEOS) were used as starting materials, other C–S–H phases like gyrolite, hillebrandite and clinotobermorite were prepared.",
  address="Research Institute of Binding Materials Prague",
  booktitle="15th International Congress on the Chemistry of Cement (ICCC 2019)
Congress proceedings – Papers and Posters Proceedings",
  chapter="157476",
  edition="first edition",
  howpublished="online",
  institution="Research Institute of Binding Materials Prague",
  year="2019",
  month="september",
  pages="1--11",
  publisher="Research Institute of Binding Materials Prague",
  type="conference paper"
}