SLAB FOR ROAD PAVEMENT Russian patent published in 1998 - IPC

FIELD: road building technology. SUBSTANCE: this can be used in construction of road pavements and bases. Slab has rectangular upper part for example in the form of straight parallelepiped, and lower part. Side faces of lower part are made in the form of alternating recesses and protrusions. Upper planes of protrusions and recesses in lower part of slabs are inclined with respect to base plane. In addition, upper part of load-bearing structure with relation of its length reduced by value which takes account of clearance between adjoining slabs to width is equal to two. Total number of recesses and protrusions over width of slab must be even, and their number in length and width of slab must be multiple of two. In middle part of one long side of slab, side faces between adjacent protrusions and recesses are formed by vertical planes which are located at angle of 45 deg. with respect to side faces of upper part of slab and they are connected to each other by vertical section which is continuation of corresponding side face of upper part of slab. Its width depends on clearance between adjacent slabs. At opposite side of slab, side face between protrusion and recess is located at right angle with respect to plane of corresponding side face of upper part of slab. Its upper part is inclined at angle with respect to base. Incline is made towards protrusion. Common vertical side faces between other adjoining protrusions and recesses are located at angle of 45 deg. with respect to side faces of upper part of slab. Application of aforesaid embodiment of road pavement slab reduces labour-intensity at installing slabs in pavement, increases load-bearing capacity of butt joints, improves reliability of road pavement made of slabs. EFFECT: higher efficiency. 7 dwg