Layered Heating Method for Hot-in-Place Regeneration of Asphalt Pavement

Abstract

The invention discloses a layered heating method for in-situ thermal regeneration of asphalt pavement. The steps are as follows: a. heat the asphalt pavement on the surface layer, and then use a rake device to loosen the asphalt pavement on the surface layer, and form material ridges in the middle of the road surface; b. use asphalt The hot-in-place pavement recycling machine heats the road surface. The hot-in-place recycling machine for asphalt pavement includes a convex heating plate. Feeder, after the convex heating plate passes, the screw distributor directly spreads the middle material ridge to both sides to form two side material ridges, and the two sides of the concave heating plate are raised to facilitate the passage of both sides of the material ridge while continuing to heat the ground . The present invention omits the collection step of the bulk material, gathers the bulk material directly on the ground to the middle and spreads them to both sides, and at the same time avoids the unsatisfactory situation of directly heating the ground through the bulk material.

Description

Technical field [0001] The invention belongs to the field of asphalt pavement, which is specifically related to an asphalt pavement, an asphalt road, aircraft regeneration, a layered heating method. Background technique [0002] Asphalt roads are hot and regenerated, that is, heating, taking the old asphalt road, taking, adding a regenerative agent, new asphalt mixture, and then re-mixing, and compacted the pavement repair process. During the heat regeneration in the asphalt road, the heating plate is needed to heat the ground, and then the torus is loose, and the torus is directly formed directly to form an intermediate cage directly. The existing asphalt pavement is mostly collecting the intermediate cage directly, then adding a regenerant to perform high temperature mixing, preparing a new asphalt mixture, re-spreading, complex operation, high road maintenance cost. Inventive content [0003] Based on the above technical problems, the present invention provides an asphalt pav...

AI Technical Summary

Problems solved by technology

Most of the existing asphalt pavement hot-in-place regeneration units directly collect the intermediate material cage, then add regenerant for high-temperature mixing to prepare new asphalt mixture, and then re-pave. The operation process is complicated and the road maintenance cost is high.

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