METHOD FOR FORMING TONGUE-AND-GROOVE ELEMENTS IN CONSTRUCTION BLOCKS AND SLABS Russian patent published in 2018 - IPC B28B7/22 E04C1/00 

FIELD: construction.

SUBSTANCE: invention relates to the building materials industry, in particular to a method for forming a special surface shape of construction blocks or slabs with groove and tongue joint systems on their four faces, having on the tops an oval surface, close to a semicylindrical one, with a radius of curvature of more than half the sizes of the particles of the working mixture. A method is proposed for forming a system of grooves and tongues on opposite faces of construction blocks or slabs having the same oval surface on tops, close to a semicylindrical one, with a radius of curvature of more than half the dimensions of the particles of the working mixture, in which each groove on one face corresponds to a tongue on the opposite face, under this method, for the blockwork or the installation of slabs using glue or a solution with a small seam thickness, a flat surface with equal height for grooves and tongues is taken for the extension of the grooves and tongues, but with greater thickness of the mortar joint and with a small angle of inclination of the flat part of the tongue-and-groove elements from the normal to the block or slab face. Also a version of the method is described.

EFFECT: method can be used in production, including a rigid, low-slump working mixture, structural and heat-insulating small construction blocks or slabs in sizes from the size of particles of a working mixture to several meters with essentially more homogeneous characteristics of density, durability and thermal conductivity on all their volume, including elements of the tongue-and-groove joint system.

2 cl, 10 dwg