Road structure – process – or apparatus – Process – In situ treatment of earth or roadway
Patent
1984-08-13
1988-12-27
Massie, Jerome W.
Road structure, process, or apparatus
Process
In situ treatment of earth or roadway
404 79, 404 91, 404 95, 404 92, E01C 706, E01C 2312, E01C 2314
Patent
active
047937300
ABSTRACT:
A method and apparatus for renewing the surface of asphaltic paving at low cost and for immediate reuse. The asphalt surface is heated to about 300.degree.-500.degree. F. The surface is broken to a depth of about two inches and the lower material thoroughly mixed in situ with the broken surface material. After mixing, the material is further heated to fuse the heated mixture into a homogeneous surface. The surface is screeded for leveling and compacted by a road roller. A road machine is disclosed having a steam manifold for heating the asphalt, transversely reciprocating breaker bars having teeth adjusted to the depth desired, toothed mixing cylinders for mixing the broken material, and a second steam manifold for reheating the mixed material. Reciprocating screed bars on the road machine level the mixed and heated material. Final compacting may be done with a conventional road roller.
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Letchford John F.
Massie Jerome W.
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