Single-stage technogy for granulated foam glass production based on the composition of tripoli and technogical microsilica

20th International Scientific Symposium of Students, Postgraduates and Young Scientists on "Problems of Geology and Subsurface Development"

Kazmina, O.^1 ; Volkova, A.^1 ; Vereschagin, V.^1 ; Rymanova, I.^1

National Research Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Cristobalites;    Foam glass;    Foaming temperature;    Maximum strength;    Quartz dissolution;    Single stage;    Sodium hydroxide solutions;    Technology-based;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/43/1/012067/pdf
DOI  :  10.1088/1755-1315/43/1/012067

来源: IOP

【 摘 要 】

The possibility of foam glass production by means of one-stage technology based on the natural Tripoli and technogenic silica is determined. 45 % sodium hydroxide solution is used for the synthesis of foam glass. The addition of microsilica as an extra component in an amount of 10 to 50 wt. % in batch component increases the strength of the obtained material to 4 MPa and reduces foaming temperature from 870 to 830 °C. The increased mechanical strength of the material is due to the residual quartz dissolution and cristobalite crystallization. The samples obtained from batch with 30 wt. % microsilica have maximum strength.