Road structure – process – or apparatus – Process – In situ treatment of earth or roadway
Reexamination Certificate
2005-12-20
2005-12-20
Hartmann, Gary S. (Department: 3671)
Road structure, process, or apparatus
Process
In situ treatment of earth or roadway
C405S267000
Reexamination Certificate
active
06976804
ABSTRACT:
A method of repairing concrete slabs that have become uneven and dangerous is provided that employs lime sludge that is injected under pressure into the space between the lower surface of the damaged concrete slab and the underlying ground to raise that slab back into a level orientation. Once this has been accomplished, any remaining space below the slab is filled in with well dried sand blown in under pressure.
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Harr Curtis
Hartmann Gary S.
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