TY JOUR TI Experimental study product quality in gravity device for mixing bulk materials KW heterogeneity coefficient KW mixing KW building mixtures KW bulk materials KW dispersed medium KW laboratory unit KW three-stage method KW four-stage method JO Smart composite in construction AU Verloka, I.I. AU Kapranova, A.B. AU Stenko, D.V. AU Lebedev, A.E. AU Vatagin, A.A. PY 2021 IS 2 PB Yaroslavl State Technical University