Место издания:F.A. Finger-Institut fur Baustoffkunde Weimar
Первая страница:1-0831
Последняя страница:1-0836
Аннотация:On the basis of experimental results concerning sulphate phases hydration the following conclusions can be drawn: formed by hydration of calcium sulfoferrite ferrite analogue of ettringite in which alumina ions were substituted by iron, is more stable at elevated temperature in comparison with classic ettringite; in the hydration products of the mixture of alite with sulphate phases at elevated temperature and under pressure the ferrite hydrogarnets are formed which composition depends of the con¬tent of silica in the mixture; calcium hydrogarnets formation proceed in stages through crystallization of the series of solid solutions with low content of silica (0.4 mole of SiO2) to high content (1.6 mole of SiO2). The content of silica in hydrogarnets is higher the higher is ternets are cristallizing in form of octahedrons and rhombic dodecahedrons which are kniting, the pores between them fills tobermorite, crystals of ferrmperature of autoclaving; the hydrogaite analogue of ettringite, forming together thight, nonshrinkaging microstructure of hardened cement paste, having high strength.