FIELD: manufacture of building materials. SUBSTANCE: concrete mix is prepared by mixing cement, filler, microfiller, and water, after which mix pressed and subjected to heat-moisture treatment. Filler is represented by sand and/or blast furnace slag and microfiller is represented by broken clay brick and/or mineral fiber production waste (beads), filler-to-microfiller weight ratio being (60-30):(40- 70), preferably 50:50. When preparing mix, half dose of cement and all amount of filler are first loaded into mixer, then the second half dose of cement and microfiller, after which the total is agitated and completed with water. EFFECT: traduced cost and simplified manufacture of wall concrete stones. 2 cl, 2 ex
