Production process of asphalt pavement material based on thermal regeneration of used asphalt pavement materials

Abstract

The invention relates to a production process of an asphalt pavement material based on thermal regeneration of used asphalt pavement materials. The production process is characterized by comprising a thermal regeneration production step of the used asphalt pavement materials and a production step of the new asphalt pavement material, wherein the thermal regeneration production step of the used asphalt pavement materials comprises: collecting the used asphalt pavement materials, crushing and screening, preheating the used materials, storing in a storage cabin, metering the used asphalt pavement materials, metering a regeneration agent and carrying out heat-insulation spiral conveying for mixing to obtain a regenerated material of the used asphalt pavement materials; and the production stepof the new asphalt pavement material comprises: matching new stone materials, heating and drying, sieving and grading, storing in a storage cabin, metering the new stone materials, metering new asphalt, metering new stone powder and introducing the regenerated material of the used asphalt pavement materials, graded new stone materials, new asphalt and new stone powder into a stirring cylinder in parts by weight for stirring to obtain an asphalt pavement material finished product. The production process is scientific and reasonable, is suitable for industrial production, rationally utilizes the used asphalt pavement materials, is low in cost, is good in environmental protection effect, and fully meets the requirements on the service life of the pavement.

Description

technical field [0001] The invention relates to a production process of an asphalt road fabric for paving roads, in particular to a production process of an asphalt road fabric based on thermal regeneration of old asphalt pavement materials. Background technique [0002] With the rapid development of highway and airport construction in my country, as of the end of 2010, 3.984 million kilometers of highways have been completed and opened to traffic, of which 74,000 kilometers are expressways, and 600,000 kilometers are roads dominated by asphalt roads. At present, many roads have entered the period of major and medium repairs. If the design life of asphalt pavement is 15-20 years, from now on, 10% of the asphalt pavement in the country needs to be repaired every year, and the waste of old asphalt layers will reach 3 million. Ton. If the waste materials of the old asphalt layer can be recycled, more than 450 million yuan of material costs can be saved every year. And this fi...

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Problems solved by technology

[0003] At present, the maintenance of asphalt pavement in our country usually adopts the traditional repair method, which has high cost, low efficiency, poor effect and low service life.

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