TY JOUR TI GRINDING CAPACITY OF SULFATED CLINKERS KW microhardness of minerals KW characteristic particle size KW grindability KW specific surface area KW Rosin-Rammler-Bennett equation KW sulfoferrite clinker KW expanding additive JO Technique and technology of silicates AU Zorin, D.A. PY 2026 IS 33 PB Individual Entrepreneur Svetlana Vasilievna Samchenko