The present research was realized in the field of expanded clay production technology with support ingredient as a waste of biological sewage treatment and charcoal production. The iInfluence of the introduced ingredient on the blowing of clay raw materials was analysed. The comparative physical and mechanical characteristics of samples, the main chemical reactions which took place during the firing of clay with addition of waste in raw materials were provided in article.

Keywords: expanded clay, coal waste, low-melting clays, treatment facilities, blowing, waste water, activated sludge, ecology, construction materials, porosity.