Road structure – process – or apparatus – Process – In situ treatment of earth or roadway
Patent
1986-08-29
1988-06-28
Suchfield, George A.
Road structure, process, or apparatus
Process
In situ treatment of earth or roadway
404 90, 299 17, 299 41, 239227, 239752, 175424, E01C 2312, E21C 3712
Patent
active
047535490
ABSTRACT:
The method and apparatus for removing structural concrete from a road bed includes a vehicle having a frame on wheels movable along a road bed and mounting a pivotal hood having a lowered use position adjacent the road bed and a raised position. A pressure water manifold upon the frame is connected to a source of pressurized water up to 25,000 p.s.i. A feed carriage is reciprocally mounted within the hood and supports a rotating seal and shaft assembly having a body with a water inlet connected to the manifold and a power rotated tubular shaft journaled upon the body receiving pressure water for delivery to a depending nozzle block connected to and depending from the shaft. The nozzle block normally has one or a pair of angularly related elongated bores arranged at an acute angle to the vertical axis of the blaster shaft including converging nozzles whereby the sequential and pulverizing action of water in a rotating pattern impinges against the concrete of the road bed under high pressure and traveling back and forth over the road bed removes structural concrete to a required depth and further removes surface scale and corrosion from the concrete reinforcing bars without damage thereto.
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DeSantis Gerard J.
Shook Forrest A.
Letchford John F.
NLB Corporation
Suchfield George A.
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