Getting Fired Material with Vitreous Binder Using Frame Technology

There is no chance to expand kiln materials properties and scope as such materials do not have any coarse aggregate in their composition. In this regard, we decided to develop a fired material with coarse aggregate. It is only possible to add coarse aggregate in a material composition when we get unshrinkable binder that has strong adhesion to the aggregate grains. In this article, we describe a method for producing such a binder of waterglass and sodium-lime-silica glass powder during firing semifinished product. We propose to use frame technology for molding the semifinished product - the binder components are used sequentially with the gluing the frame of the coarse aggregate in the form of waterglass and impregnation of the extracted hardened frame with the glass powder suspension. The frame technology provides a large pore structure of the material and reduces the amount of binder. The impregnation of the hardened frame and the firing of the semifinished product performed at 740 - 780 ̊C without molds. By using the proposed technology, we obtained the fired material with coarse aggregate on unshrinkable porous vitreous binder. Physical and mechanical characteristics of the material allow to use it for manufacturing of insulating or structural-insulating products for building purposes in the form of blocks or slabs.