TY JOUR TI OPTIMIZATION OF TECHNOLOGICAL PARAMETERS FOR MANUFACTURING CENTRIFUGED CONCRETE SAMPLES OF ANNULAR SECTION KW JO Construction and Architecture AU Mailyan, L.R. AU Stel'makh, S.A. AU Khalyushev, A.K. AU Shcherban', E.M. AU Kholodnyak, M.G. AU Nazhuev, M.P. PY 2018 IS 6 PB Publishing Center RIOR