Patent ID: 8672579
Filing Date: 2014-03-18
Classification: E01C,E01D,Y10T

Abstract:
1. An expansion joint system of a concrete slab arrangement including a first concrete slab and a second concrete slab that define a slab plane, an expansion joint reinforcement to be arranged between the first concrete slab and the second concrete slab, the expansion joint reinforcement comprising: a first plate part to be arranged at a first slab edge of the first concrete slab so that the first plate part extends along the first slab edge of the first concrete slab and along a joint between the first concrete slab and the second concrete slab so that the first plate part faces the joint between the first concrete slab and the second concrete slab; a second plate part to be arranged at a second slab edge of the second concrete slab so that the second plate part extends along the second slab edge of the second concrete slab and along the joint between the first concrete slab and the second concrete slab so that the second plate part faces the joint between the first concrete slab and the second concrete slab, first local dowels which are arranged to transfer loads perpendicular to the slab plane and which comprise: second local dowels which are arranged to transfer loads perpendicular to the slab plane and which comprise: the first dowel plate and the first casing part are arranged to be cast into and to be attached to the concrete slabs on different sides of the joint, the first casing part is arranged to prevent the first dowel plate from adhering to a location of the concrete slabs where the first casing part is attached thereto, and the first casing part is further arranged to allow the first dowel plate to move inside the first casing part and thus to allow the movements of the concrete slabs in a horizontal direction, the second dowel plate and the second casing part are arranged to be cast into and to be attached to the concrete slabs on different sides of the joint, the second casing part is arranged to prevent the second dowel plate from adhering to a location of the concrete slabs where the second casing part is attached thereto, and the second casing part is further arranged to allow the second dowel plate to move inside the second casing part and thus to allow the movements of the concrete slabs in the horizontal direction, the first dowel plate and the first casing part are attached to the first plate part in an alternating order, and the second dowel plate and the second casing part are attached to the second plate part in an alternating order, in such a way that the first casing part and the second casing part are installed on different sides of the joint.