TY CONF TI POLYMER PONTON BRIDGES FOR TRACKED EQUIPMENT IN THE AGRICULTURAL COMPLEX KW bridge structures KW pontoon KW floating bridges KW polymer materials in the coating and at the base of the bridge JO XIII All-Russian scientific-practical conference of young scientists «Achievements and prospects of development of the Russian agriculture", dedicated to the memory of R.G. Gareev AU Baklushin, K.. AU Ovchinnikov, I.. PY 2023 PB TRIA FRC Kazan Scientific Center of RAS