Elastic joint spanning waterstop element

Road structure – process – or apparatus – Pavement – Including joint means

Patent

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Details

52396, E01C 1110

Patent

active

041273508

ABSTRACT:
An elastic joint-spanning waterstop of particular design for use in a method of sealing joints, in particular expansion joints between concrete sections in roads, bridge and parking deck structures against passage of water, dirt, etc., is described. In the method, recesses are formed in the concrete surface on each side of the joint and the specially designed flexible elastic joint-spanning waterstop element is placed therein, and thereafter a layer of rigid-setting grout is then placed over the element. The waterstop element is in the form of a continuous strip having in cross-section a center portion for location in the joint, and lateral joint-spanning web portions. The webs have a number of openings therethrough to admit fluid grout therein. An upstanding rib is placed between the openings and the center section and is spaced therefrom. The openings in the webs when filled with grout serve to support the upper layer of grout and to prevent flexing and cracking thereof by vehicle traffic passing thereover, as well as to anchor the webs to the concrete bodies. The upstanding rib is embedded in grout and acts to seal against passage of any water from the joint through the openings when the joint is in an expanded position and the waterstop is stretched.

REFERENCES:
patent: 3128576 (1964-04-01), Bradley
patent: 3583120 (1971-06-01), Wangerow
patent: 3808762 (1974-05-01), Hurst
patent: 4015302 (1977-04-01), Clark

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