Patent ID: 8539726

Claim:
An expansion joint system of a concrete slab arrangement, comprising: an expansion joint reinforcement configured to be arranged between a first and a second concrete slab, the expansion joint reinforcement having: a plate part configured to be arranged between the first and the second concrete slab, and at least one local dowel, the at least one local dowel being formed of a dowel plate and a casing part for preventing the dowel plate from adhering to concrete of the second concrete slab, the at least one local dowel being arranged to transfer loads perpendicular to a slab plane, wherein: the dowel plate of the at least one local dowel is attached to the plate part, the casing part of the at least one local dowel is attached to the plate part, the casing part being configured to be arranged in concrete of the second concrete slab, the dowel plate of the at least one local dowel has a first part configured to be arranged in concrete of the first concrete slab for adhering to concrete of the first concrete slab, the dowel plate of the at least one local dowel has a second part located inside the casing part of the at least one local dowel for preventing the second part from adhering to concrete of the second concrete slab, and the expansion joint reinforcement includes an additional reinforcement having at least one clenching pin and is configured to be arranged in the vicinity of the at least one local dowel in the concrete of the first concrete slab or the concrete of the second concrete slab, the additional reinforcement being arranged to adhere to the concrete (i) above the at least one local dowel by means of an upper widening of the at least one clenching pin forming a first clench point and (ii) below the at least one local dowel by means of a lower widening of the at least one clenching pin forming a second clench point.