METHOD FOR APPLYING CONCRETE TO SURFACE Russian patent published in 1997 - IPC

FIELD: civil engineering. SUBSTANCE: method relates to applying concrete to surface in erection of buildings and structures from monolithic concrete, also in constructing support inside mountain tunnels, and for their final surface finishing. According to method, initially glueing layer is created on surface, then primary bearing layer is made upon glueing layer by ejecting paste-like concrete members in the form of cubes or parallelepipeds or balls with size of aggregate pieces up to 8 mm. Next structural layer is made by ejecting paste-like fiber-concrete members in the form of balls of up to 50 mm size, and final decorative layer is made with material of primary bearing layer with smoothing by compressed air at pressure of up to 10 MPa and temperature of up to 500 C. Moment of ejecting material of primary bearing and decorative layers corresponds to initial phase of hardening of concrete mixture and that of structural layer - to final phase of hardening. Ejection of material of layers can be effected repeatedly, thus forming sandwich structure. Insulating layer can be applied prior to glueing layer and it is made of heat-insulating expanded polystyrene or water-proofing concrete. EFFECT: high efficiency. 3 cl, 15 dwg