Study of the Composition of the Activating Mixture for the Production of Foamed Geopolymer Materials
摘要
The accumulated of ash and slag waste necessitates their processing. The processing of ash and slag wastes through their use for the synthesis of geopolymers is a very promising area of research. Geopolymer materials are obtained by alkaline activation reaction. The role of the activator on the technological properties of foamed geopolymer materials has been studied. It has been established that solutions of alkali hydroxides and/or solutions of alkali silicates are used as an activating solution. The synthesis of samples with different content of liquid glass and sodium hydroxide was carried out. It is shown that the content of both liquid glass and sodium hydroxide affects the properties. Technological properties and microstructure of synthesized samples are determined. Conclusions are drawn about the optimal amount of liquid glass and sodium hydroxide in the composition of the activating solution for obtaining foamed geopolymer materials with a minimum density. Pore size distribution studied.