Mathematical Model of Coextrusion Molding of Polymer-concrete Building StructuresValery Dyadichev, Andrey Kolesnikov, Aleksandr Dyadichev, Ekaterina Dyadicheva, Sergey Menyuk and Svitlana ChornobayE3S Web Conf., 97 (2019) 02014DOI: https://doi.org/10.1051/e3sconf/20199702014