TY JOUR TI METHODS TO ESTIMATE ECONOMIC EFFICIENCY OF APPLYING POLYMER-BITUMEN BINDERS KW objectives KW roads KW materials KW binders KW calculation KW efficiency KW technologies JO Bulletin of Bryansk state technical university AU Guzhov, S.A. AU Sanakulov, A.B. AU Lebedev, V.V. AU Nebratenko, D.Y. PY 2021 IS 2021 PB Bryansk State Technical University