Emulsified asphalt cold-recycled pavement structure and rapid maintenance method of pavement

Abstract

The invention discloses an emulsified asphalt cold-recycled pavement structure and a and rapid maintenance method of pavement. The method comprises a compacted structure and a newly-laid structure, ajoint is arranged between the compacted structure and the newly-laid structure, and the compacted structure and the newly-laid structure comprise an asphalt upper surface layer, an asphalt middle surface layer, an asphalt lower surface layer, a sealing layer and a roadbed layer from top to bottom; the asphalt upper surface layer includes SMA13 type asphalt, and the thickness of the asphalt upper surface layer is 4cm; the asphalt middle surface layer is made of AC20 type asphalt, and the thickness of the asphalt middle surface layer is 6cm; the asphalt lower surface layer is made of AC25 type asphalt, and the thickness of the asphalt lower surface layer is 8cm; the sealing layer includes SBS modified asphalt; the roadbed layer comprises an emulsified asphalt cold-recycled base layer, a cement stabilized macadam base layer and a cement stabilized macadam subbase layer; and the emulsified asphalt cold-recycled base layer is an emulsified asphalt cold-recycling mixture, and the thickness of the emulsified asphalt cold-recycling mixture is 10cm. According to the invention, the curing time of 5-7 days in the prior art can be shortened to 3 days, the construction time is obviously shortened, and then the construction cost is reduced.

Description

technical field [0001] The invention relates to the technical field of highway engineering pavement construction, in particular to an emulsified asphalt cold-recycled pavement structure and a rapid health maintenance method for the pavement. Background technique [0002] With the rapid development of my country's economy and society, the traffic volume is increasing day by day, and the expressways built in the early stage have gradually entered the period of overhaul, medium repair, reconstruction or expansion. Environmental pollution, on the other hand, is a waste of resources. If these waste asphalt pavement materials can be recycled and recycled, at least hundreds of millions of yuan in material expenses will be saved every year, which is conducive to the promotion of green construction. As a result, the application of emulsified asphalt cold recycling construction technology was born. [0003] Because the emulsified asphalt cold recycled pavement usually needs to be cur...

AI Technical Summary

Problems solved by technology

During the health preservation period, traffic safety control is required to prevent large vehicles from being crushed and damaged. Due to the tight schedule and heavy construction tasks of the expressway reconstruction and expansion project, the original construction process is inefficient and cannot meet the needs of the new situation

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