Expansion joint and method of manufacture

Details Expansion joint and method of manufacture Expansion joint and method of manufacture

1988-10-12

1990-10-16

Neuder, William P.

Road structure, process, or apparatus

Pavement

Including joint means

404 68, 404 67, 14 165, 52403, E01C 1102, E01C 1104

Patent

active

049630563

ABSTRACT:
A bridge expansion joint is provided comprising an pair of blocks interconnected by a flexible sealing profile. Each block is formed by at least three vertically stacked layers made from plastic concrete compound. The two lower layers of plastic concrete are anchored to the bridge structure through an impregnation base coating. The impregnation coating is applied along the two edges of a expansion gap onto the roughened bridge structure. After fixing the size of the expansion gap, the two first layers are cast of a thickness corresponding to the height of the neighboring leveling courses of the roadway structure. The second layers are then cast to be a thickness corresponding to the total height of a protective covering placed on a waterproof insulation applied to the leveling courses and parts of the first layers, and the bearing course of the roadway structure. A continuous wearing course of the roadway structure is laid on the bearing course and the second layers, with a portion thereof being removed from the surfaces of the second layer. The expansion gap is then covered with a flexible sealing profile, and the surfaces of the second layer are coated with an adhesive film. The two third layers are then cast so as to be separated by the gap, and are of such thickness to be level with the height of the running surface of the roadway structure wearing course. A flexible sealing material is then used to fill the gap.

REFERENCES:
patent: 4063839 (1977-12-01), Brown
patent: 4601604 (1986-07-01), Clark et al.
patent: 4784516 (1988-11-01), Cox

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