RAW MATERIAL MIXTURE FOR PRODUCTION OF ROOF TILES

摘要

FIELD: manufacture of building materials; applicable in manufacture of roof tiles, facing and common bricks and other products. SUBSTANCE: raw material mixture for production of roof tiles includes the following components, mas. %; medium-plastic clay 50.0-80.0; bentonite clay 48.5-12.0; alumina 1-5; aluminum pickling wastes 0.5-3.0. Mechanical and physical characteristics of products: water absorption 6.0-10.9%; tile compression strength 46.2-86.5 MPa; frost resistance over 75 cycles; firing temperature 875-1000 C; total shrinkage 0.5-2.5%. EFFECT: higher efficiency.