TY JOUR TI Use of bentonite clay as waterproofing material KW bentonite KW waterproofing KW performance properties KW bentonite mats KW clay lock KW injectable bentonite waterproofing JO Proceedings of Petersburg Transport University AU Mayer, R.A. AU Yakimov, G.D. AU Shangina, N.N. AU Samoylov, S.A. PY 2024 IS 21 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"