ROAD, AIRFIELD SLAB Russian patent published in 2008 - IPC E01C5/08 

FIELD: construction.

SUBSTANCE: road, airfield slab contains concrete body and prefabricated reinforcement cage placed therein. The said cage is made of corner elements fitted at lower and upper chords. Reinforcement rods placed with bias and forming, together with corner elements, interconnected tetrahedrons with tops oriented upwards and downwards are connected to the above corner elements. Corner elements can be made as cylinders perpendicular to slab surface and furnished with holes on side surface where ends of reinforcement rods positioned with bias are fitted. Road, airfield slab in plan view is made as rectangle or polygon, preferably as regular hexagon. Road, airfield slab can be made as monolith structure and have thermal seams. Adjacent tetrahedrons have common reinforcement rods. Additionally, reinforcement rods can have bent ends and corner elements are made with radially located holes where bent ends of reinforcement rods positioned with bias are fitted. At least part of corner elements is made with axial hole interconnected with holes for reinforcement rods fitting or with frontal threaded projections for flanges. Reinforcement rods and/or corner elements can be made of fiberglass.

EFFECT: enhancement of bearing capacity of road and airfield slabs and improvement of their flexural strength characteristics due to the fact that loads affecting the slab are redistributed in slab body by means of reinforcing it by proposed method.

8 cl, 2 dwg