TY JOUR TI PROPERTIES OF PHOTOCATALYTIC COMPOSITE MATERIAL BASED ON SILICA RAW MATERIALS KW photocatalysis KW photocatalytic composite material KW titanium dioxide KW diatomite powder KW cement stone KW self-cleaning JO Bulletin of Belgorod State Technological University named after. V. G. Shukhov AU Labuzova, M.V. AU Gubareva, E.N. AU Ogurcova, Y.N. AU Strokova, V.V. PY 2018 IS 3 PB Belgorod State Technological University named after V.G. Shukhov