Structure Formation of Finishing Compositions Based on Modified Lump Silicate

Information on the structure formation of a finishing composition based on the mechanochemical activation astringent, obtained by joint grinding of sodium silicate lumps and calcium chloride is presented. The silicate lump after mechanochemical activation had a specific surface area of 3000 cm2/g. As one of the components, dehydrated clay with an average density of 1439 kg/m3 and a specific surface area of 2783 kg/m3 was used. Shows, the formation in putties with the use of dehydrated hydrosilicate clay and calcium hydroaluminosilicates. The regularities of changes in the plastic strength for the finishing composition depending on the content of dehydrated clay have been established. Mathematical models of plastic strength are presented. Studies indicate the effectiveness of the use for the astringent based on joint grinding of lump silicate and calcium chloride. The composition of the putty has been developed in the form of a dry mixture containing mechanochemical activation silicate lump (MXASL), dehydrated clay and an additive - sodium salt of carboxymethyl cellulose. The technological and rheological properties of the putty composition have been established.