Asphalt concrete single-layer full-section paving construction method

Abstract

The invention relates to an asphalt concrete single-layer full-section paving construction method which comprises the steps that a front pouring groove integrally extending in the section length direction is dug in a paving area, the rear side groove wall of the front pouring groove is hollowed out, a rear pouring groove is formed below the edge of a front asphalt layer, and the front pouring groove and the rear pouring groove communicate with each other to form a cast-in-place groove; downward pressure is applied to the butt joint position of the previous asphalt concrete layer and the later asphalt concrete layer, so that the edges of the previous asphalt concrete layer and the later asphalt concrete layer are warped downwards into the cast-in-place groove, and the downward warped edges of the previous asphalt concrete layer and the later asphalt concrete layer form a V-shaped groove; and an asphalt concrete body is poured into the cast-in-place groove under pressure from the vertical hole until the asphalt concrete body overflowing from the vertical hole overflows the V-shaped groove. According to the method, after the new asphalt layer and the old asphalt layer are bent, secondary pouring is carried out, and the covering effect of the asphalt concrete body subjected to secondary pouring on the joint is utilized, so that the connection strength of the joint of the new asphalt layer and the old asphalt layer is improved, and the cracking problem is avoided.

Description

technical field [0001] The invention belongs to the field of asphalt concrete pavement construction, in particular to a construction method for asphalt concrete single-layer full-section paving. Background technique [0002] The urban road project faces a large traffic volume, the radius of the interchange ramp is small, and the vehicle accelerates and decelerates frequently, which makes the horizontal and vertical loads on the ramp surface quite complicated. Moreover, the project is located in the Guangdong area, and the temperature is high all year round. , the temperature of the road surface may be as high as 70C. Under the dual effects of high temperature and heavy load, the asphalt concrete layer is facing a very severe test. comfort, and will endanger driving safety, and even cause great economic losses, casualties and adverse social impact to the country and society. Especially when faced with the joint construction of the asphalt concrete layer at the junction of th...

AI Technical Summary

Problems solved by technology

[0002] The urban road project faces a large traffic volume, the radius of the interchange ramp is small, and the vehicle accelerates and decelerates frequently, which makes the horizontal and vertical loads on the ramp surface quite complicated. Moreover, the project is located in the Guangdong area, and the temperature is high all year round. , the temperature of the road surface may be as high as 70C. Under the dual effects of high temperature and heavy load, the asphalt concrete layer is facing a very severe test. comfort, and will endanger driving safety, and even cause great economic losses, casualties and adverse social impact to the country and society

Especially when facing the joint construction of the asphalt concrete layer at the junction of the old road and the new road, the existing cross-section butt joint process can easily lead to joint detachment and cracking, which affects the safety of road pedestrians

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