FIELD: construction.
SUBSTANCE: raw material mixture for manufacture of heat insulating items that contains acid nonbaking clay, sintered perlite, chalk, differs by the fact that it additionally contains wastes of glass fibre production, with the following ratio of components, wt %: acid nonbaking clay - 55.0-60.0; sintered perlite - 30.0-35.0; chalk - 6.0-7.0; wastes of glass fibre production - 3.0-5.0.
EFFECT: increase of items strength.
1 tbl
