초록 ▼

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°-500°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 mix

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°-500°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.

대표청구항 ▼

A method of renewing an asphalt pavement having a thin degraded surface portion over an underlying thick undegraded portion comprising the steps of: heating the surface of the asphalt pavement to a temperature in the range of 300°-500°F.; breaking the thin degraded surface portion of the heated asph

A method of renewing an asphalt pavement having a thin degraded surface portion over an underlying thick undegraded portion comprising the steps of: heating the surface of the asphalt pavement to a temperature in the range of 300°-500°F.; breaking the thin degraded surface portion of the heated asphalt; breaking the underlying undegraded portion to a depth of about two inches; mixing the broken degraded surface portions with the broken undegraded portions from below such degraded surface portion in situ; reheating the mixed broken portions of degraded and undegraded asphalt material to fuse the mixture into a homogeneous mass; leveling the mixed and reheated mass by screeding; and compacting the smoothed, mixed, and reheated material.