Zvierieva A. Polymer-mineral composites with adjustable deformation properties for the foundations of reinforced concrete transport structures

The dissertation is devoted to obtaining polymer-mineral composites for the foundation of reinforced concrete transport structures with deformative proper-ties that will provide minimum stresses in structures. An analysis of materials suitable for the foundations of reinforced concrete transport structures has been carried out, namely ballastless bridge deck made of reinforced concrete slabs, and reinforced concrete culverts. The analysis of the stress-strain state of the structure of a reinforced concrete transport structure has been carried out, the dependences of the stresses in the structure on the deformative properties of its base have been determined, the boundaries of the deformation modules have been determined, which will ensure the minimum stresses and deformations in the structures. A rheological model of the composition of the composite has been developed and rheological properties have been substantiated, which will ensure the device of a homogeneous solid base by injection methods and filling. The dependences of the deformation modules and other physical and mechanical properties of polymer-mineral composites on their compositions and production technologies have been investigated. The composition of a polymer-mineral composite for the laying lay-er of the ballastless bridge deck has been developed; the technology of obtaining a polymer-soil composite for the base of a reinforced concrete culvert with speci-fied deformative properties has been improved. The results of the implementation studies have been completed during the overhaul of the culvert, also in the rec-ommendations for increasing the bearing capacity of the foundations and water-proofing of reinforced concrete transport structures and in the educational pro-cess.