Construction method for dust removing and water draining macroporous asphalt road surface containing graded broken stone composite layer

Abstract

The invention relates to a construction method for a dust removing and water draining macroporous asphalt road surface containing a graded broken stone composite layer. The construction method is characterized in that the road surface structure is arranged to be sequentially provided with a lower layer, a middle layer, a waterproof and cracking-resistant layer, a dust removing composite layer and an upper layer from bottom to top. The construction method of the road surface comprises the steps that firstly, construction of a base layer is completed on a pad layer, and paving and compacting of the lower layer and the middle layer are performed; secondly, the waterproof and cracking-resistant layer is constructed on the surface of the middle layer, the graded broken stone fixing layer is paved on the surface of the waterproof and cracking-resistant layer through a rubber wheel paving machine, and a dust removing pipeline is fixed; finally, the upper layer of the macroporous asphalt road surface is paved. According to the macroporous asphalt road surface constructed through the method, the water draining, noise lowering and slip resisting capacities can be effectively recovered and kept, the service life is prolonged, the water draining efficiency and the accumulated snow melting efficiency are improved, the bulk temperature is lowered, traffic safety is guaranteed, and the traffic environment is optimized.

Description

Technical field [0001] The invention belongs to the field of road engineering, and in particular relates to a construction method for dust removal and drainage macroporous asphalt pavement containing a graded crushed stone composite layer, which is mainly used for hole cleaning, dust removal, drainage and snow removal of macroporous asphalt pavement. Background technique [0002] Macroporous asphalt pavement has excellent drainage and noise reduction performance. However, due to the characteristics of macropores in the use of macroporous asphalt pavement, clay, oil and rubber particles can easily enter the pores and block the pores. The repeated alternation of rainy and sunny days has accelerated this blockage. When it rains, the dust, sand and other blocking substances in the pores will enter the depth of the pavement material along the rain; when the blocking materials are hardened and bonded with the aggregates on sunny days, the pumping effect on low-speed roads is not signi...

AI Technical Summary

Problems solved by technology

[0004] 1. Adopt a vacuum absorption dust removal device, and use negative pressure to absorb tiny dust into the dust removal device, but the method of negative pressure adsorption is not effective in removing dust from larger dust or stone chips;

[0005] 2. Use high-pressure water to wash the road surface and use strong brushing to achieve the effect of dust removal. It can remove part of the dust or stone chips on the road surface, but the dust and stone chips deep in the road can not be cleaned, but will be washed by high-pressure water. The deeper the road, the more serious the consequences;

But in fact, the depth of washing is still not enough. At the same time, the strong scrubbing will destroy the overall structure of the road surface, weaken the overall anti-skid performance of the road surface, and affect the safety of the road.

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