Static structures (e.g. – buildings) – Machine or implement
Patent
1980-08-18
1982-10-05
Bell, J. Karl
Static structures (e.g., buildings)
Machine or implement
52173R, 52514, 52749, E04B 141
Patent
active
043522629
ABSTRACT:
A method of repairing cracks in a concrete structure to prevent leakage wherein rods are inserted in the crack at spaced intervals to extend outwardly therefrom. A surface seal is applied to extend partially into the crack near the structure outer surface from which the rods extend, and to the structure outer surface adjacent to the crack and around the rods so that the surface seal acts as a surface barrier for the filler to be injected. Port members, having hollow shaft portions, and a flange portion are placed over the rods with the flange portions approximately adjacent the structure outer surface. Substantially the entire flange portion is embedded in the surface seal. The surface seal is allowed to cure to define a surface barrier for the filler, and the rods are removed from the crack and port members such that the ports communicate with the crack cavity behind the surface seal. After the surface seal cures, a filler is injected through the port members and into the crack cavity, and the port members are plugged.
A port and plug assembly for use in sealing the cracks has a hollow shaft portion and a flange portion at one end thereof. The flange defines the base of the port member and is generally flat with the shaft extending from only one side of the base, the base being adapted to be embedded in a surface seal in the crack sealing method.
REFERENCES:
patent: 1883196 (1932-10-01), Wertz
patent: 2074566 (1937-03-01), Sheils
patent: 2187324 (1940-01-01), Many
patent: 3371459 (1968-03-01), Thomas et al.
patent: 4044512 (1977-08-01), Fischer et al.
patent: 4120128 (1978-10-01), Pauls
patent: 4269014 (1981-05-01), Grammerst
Edelmann Frank E.
Post James R.
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