A kind of anti-scattering material for durable drainage asphalt pavement and its construction method

Abstract

The invention relates to a durable drainage asphalt pavement anti-scattering material and its construction method. The durable drainage asphalt pavement anti-scattering material comprises, by weight,1 part of an aqueous polymer emulsion, 20-50 parts of modified emulsified asphalt, 1-3 parts of water and 0-15 parts of fine sand. In 48h after the construction of the newly-built drainage asphalt pavement, the anti-scattering material is scattered and is cured for at least 12h. The anti-scattering material is prepared and scattered at the normal temperature and a scattering amount is 0.2 to 0.6kg / m<2>, and preferably, the anti-scattering material is uniformly scattered on the surface of the newly-built drainage asphalt pavement through an intelligent distributor or a small distributor. The durable drainage asphalt pavement anti-scattering material does not influence road surface anti-sliding performances and drainage functions, repairs the asphalt film damaged by a road roller or other heavy machinery in the construction, increases road surface asphalt film thickness, improves the anti-scattering capability of the drainage asphalt pavement and realizes local or whole enhancement of the drainage asphalt pavement.

Description

technical field [0001] The invention relates to the technical field of highway engineering, in particular to a drainage asphalt pavement maintenance technology, and more particularly to an anti-scattering material and a construction method thereof. Background technique [0002] Drainage asphalt pavement uses asphalt mixture with a porosity of more than 18% and a skeleton-void structure as the upper layer. Compared with ordinary pavement, it also drains water through the cross slope. The large void structure of the drainage pavement migrates the water flow channel to the inside of the pavement. The road surface of the non-ordinary road surface, so its surface is also "dry" in rainy days, which increases the visibility of driving in rainy days and greatly shortens the braking distance. In addition, the drainage asphalt pavement has outstanding advantages such as reducing noise, reducing glare, alleviating the heat island effect, and saving materials due to its large void chara...

AI Technical Summary

Problems solved by technology

[0003] However, during the construction of drainage asphalt pavement, due to the excessive rolling action of road rollers or other heavy machinery, it is easy to cause damage and loss of asphalt film, and in severe cases, it may even cause stones to drop, break, etc., resulting in local sticking of asphalt mixture. Cohesion drop phenomenon affects the construction quality of asphalt pavement, shortens the service life of the pavement, and causes more serious damage to the drainage asphalt pavement

[0004] However, at present, the maintenance work of newly built roads has not attracted enough attention

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