Products of hydratation in fine grained mixtures MgO _ SiO2

2nd International Conference on Competitive Materials and Technological Processes

Szczerba, J.^1 ; Prorok, R.^1 ; Madej, D.^1 ; Sniezek, E.^1

AGH University of Science and Technology, Faculty of Material Science and Ceramics, Department of Ceramics, al. A. Mickiewicza 30, 30-059 Krakow, Poland^1

关键词: DTA-TGA;    Fine grained;    Hydratation;    Magnesium silicates;    Molar ratio;    Phase evolutions;    Phase systems;    Water-to-solid ratios;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/47/1/012046/pdf
DOI  :  10.1088/1757-899X/47/1/012046

来源: IOP

【 摘 要 】

The aim of this study was to evaluate the influence of time of ageing on phase evolution of paste from MgO-SiO2-H2O phase system. The paste was composed of fine grained sintered magnesia and microsilica in 1:2 molar ratio and water, with water to solid ratio equal 0,5. After preparation the paste was ageing during specified time up to 180 days in temperature 20° C. Phase composition of mixture of MgO and SiO2with water was studied by XRD, DTA-TGA. The analysis revealed that product of reaction in mixture of MgO, SiO2and water was a probably poorly crystalline magnesium silicate.