Construction method for reconstruction of old cement pavement into asphalt concrete pavement

Abstract

The invention discloses a construction method for reconstruction of an old cement pavement into an asphalt concrete pavement, the steps are as follows: 1, pouring seams of the to-be-reconstructed old cement pavement, 2, judging the damage degree of the to-be-reconstructed old cement pavement, and processing damages; 3, spraying hot rubber asphalt on the damage-processed pavement, spreading an aggregate on the hot rubber asphalt, and rolling to embed the spread aggregate into an asphalt film to form a stress absorption and seepage prevention rubber asphalt stress absorbing layer; 4, paving a grating net sheet on the rubber asphalt stress absorbing layer, and fixing; and, paving an asphalt concrete surface layer on the grating net sheet, wherein the asphalt concrete surface layer is paved in two times. The maintenance cost is greatly reduced, the highway overhaul time is greatly extended, the pavement service life is prolonged more than 1 time, and good economic and social benefits are received. In the rubber asphalt production process, tire waste is used, energy is saved, and the construction method is conducive to environmental protection.

Description

technical field [0001] The invention relates to the technical field of road construction, in particular to a reconstruction construction method for cement pavement. Background technique [0002] Since the 1990s, my country's cement concrete pavement has developed extremely rapidly. With the development of society and economy and the continuous improvement of people's living standards, people's requirements for road comfort are getting higher and higher. Due to the increase of the service life, the existence of cracks in the cement pavement seriously affects the driving comfort. In order to better create a city image and create a good investment environment, many cities have started the "white to black project". The "blackening" of cement pavement is to add asphalt concrete surface layer on the old cement pavement to form a composite pavement. Composite pavement has the dual advantages of comfortable driving on flexible pavement and large bearing capacity of rigid pavement....

AI Technical Summary

Problems solved by technology

However, many "white to black projects" practices have shown that when cement concrete pavement is overlaid with asphalt concrete, the overlay often has cracks at the joints and cracks of cement concrete slabs, and these cracks have also become cement concrete pavement reconstruction and overlay. The main disease after asphalt concrete

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