INVESTIGATION OF PHYSICO-MECHANICAL PROPERTIES OF COARSE-PORED EXPANDED CLAY CONCRETE FOR THREE-LAYER 3D ADDITIVE CONSTRUCTIO

The article considers the solution of urgent problem development 3D additive technologies in Russia by creating a new model forming device and composite materials. purpose this work is to study physical, technological thermal properties coarse-pored expanded clay concrete. required characteristics are determined standard methods requirements regulatory documents, including modern physico-chemical analysis wide range original research corresponding scientific knowledge. Results. Compositions coarse-porous concrete with compressive strength up 9.2 MPa, water absorption 25% weight shrinkage deformations 0.1...0.3 mm/m were obtained. To simulate behavior studied systems, two-factor three-level experiment was conducted for each type mixture concrete, which allowed us obtain regression equations characterizing relationship variable parameters certain system. It revealed that value average density most affected specific consumption binder. While depends on I/O ratio. Moreover, case, amount less related porosity cement stone itself, more consistency stickiness resulting glue, its ability evenly cover filler particles. established rationally selected compositions structural insulation KPKB internal filling three-layer "printed" wall, homologation will ensure formation technical operational indicators.