Mineralogical and technological modifications of the clay raw for production of ceramic brick and haydite gravel

A classification of clay raw materials by mineralogical and technological varieties has been developed to assess its suitability for the production of ceramic bricks and expanded clay gravel. Depending on the quality, the raw materials are divided into seven varieties. Determination of the mineralogical and technological variety of clay raw materials makes it possible to reliably predict the quality of finished products without carrying out a large volume of laborious tests. Tab. 2, bibliography: 2 titles.