Method and apparatus for stabilizing a subgrade with additives a

Details Method and apparatus for stabilizing a subgrade with additives a Method and apparatus for stabilizing a subgrade with additives a

1994-08-29

1996-04-30

Graham, Matthew C.

Railways

Track layers

238 2, 37104, 171 16, E01B 2706

Patent

active

055114857

ABSTRACT:
An arrangement for installing a protective layer between a subgrade and a layer of ballast of a track bed includes an excavating unit to remove ballast from underneath the track and a subgrade stabilizing unit by which additives are disposed directly over the exposed subgrade and blended underneath the track with the subgrade for formation of a protective layer following a leveling and compacting process. Removed and cleaned ballast is then laid by a conveyor over the new protective layer.

REFERENCES:
patent: 3872929 (1975-03-01), Theurer et al.
patent: 4397241 (1983-08-01), Newman
patent: 4400897 (1983-08-01), Scheuchzer et al.
patent: 4451180 (1984-05-01), Duval
patent: 4479439 (1984-10-01), Theurer et al.
patent: 5257580 (1993-11-01), Theurer et al.

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