METHOD OF BUILDING PREFABRICATED ROAD AND AERODROME PAVEMENTS FROM PRESTRESSED REINFORCED CONCRETE SLABS Russian patent published in 2022 - IPC E01C5/08 

FIELD: construction.

SUBSTANCE: invention relates to construction of aerodrome and road surfaces from prefabricated prestressed plates. Method of construction of prefabricated coatings from prestressed reinforced concrete slabs includes: preparation of a rigid base; leveling layer device; reinforced concrete slabs laying; vibratory setting of slabs; leveling slabs; welding of butt joints of slabs and filling of seams. Base of each laid slab is pre-coated with a layer of anti-adhesion material. Leveling layer device is arranged by placing a formwork from an elastic material along the boundaries of the planned position of the laid slab and filling its inner cavity with a movable sand-cement mortar. After that, reinforced concrete slab is laid in formwork. It is preferable that the formwork from the elastic material in the plan is located along the boundaries of the planned position of the mounted slab with coincidence of the outline of the side grooves of the slab for the mounting hinges of the slab. It is preferable that the height of the formwork from the elastic material exceeds the height of the design sand-cement leveling layer taking into account the design slope of the coating. It is preferable that the anti-adhesion material for coating the base of the slab is polyethylene, or bitumen-polymer material, or roofing melting material containing a layer of polymer bitumen. Preferably, metal thrust bearings are laid in the grooves for the mounting hinges on the prepared rigid base, M20 nuts are welded to the mounting hinges, and the slab is lowered into the design position by rotating the adjusting screws treated with thick lubricant and screwed into the M20 nuts. It is preferable that the control of evenness of the slab laying is carried out by a level. Preferably, compression seams and mounting openings are filled with sand-cement mortar to 2/3 of seam depth.

EFFECT: increasing the bearing capacity of prefabricated aerodrome and road pavement from prestressed reinforced concrete slabs.

7 cl