Ultrathin overlay asphalt mixture, preparation method thereof and application in pavement maintenance ultrathin overlay

A kind of technology of asphalt mixture and overlay, applied to the ultra-thin overlay of road maintenance, the field of ultra-thin overlay asphalt mixture and its preparation, can solve the problem of reducing the service quality of ultra-thin overlay maintenance technology, and popularize and apply the service life Range, high temperature stability, low temperature crack resistance, water stability and viscosity cannot meet the technical performance requirements of ultra-thin overlay maintenance, so as to achieve the effect of shortening the paving compaction time, convenient and quick construction, and low cost
CN113149518APending Publication Date: 2021-07-23云基智慧工程股份有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
云基智慧工程股份有限公司
Publication Date
2021-07-23

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Abstract

The invention discloses an ultrathin overlay asphalt mixture, a preparation method thereof and application in pavement maintenance ultrathin overlay. The mixture comprises the following components in percentage by mass: 93.533%-93.875% of aggregate, 5.914%-6.267% of matrix asphalt and 0.2%-0.211% of chloroprene rubber. The mixture has the beneficial effects that the anti-cracking performance, the water damage prevention function, the anti-sliding performance, the high and low temperature stability function, the interlayer shear resistance function, the durability function and the like of the ultra-thin overlay are improved. The construction cost of the thin overlay can be lower than that of a traditional thin overlay while the road maintenance requirement is met, construction is more convenient and faster, the paving and compacting time is shortened, and traffic can be opened earlier.
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Description

technical field

[0001] The invention relates to the technical field of road maintenance, in particular to an ultra-thin overlay asphalt mixture, a preparation method thereof and an application in ultra-thin overlay for road maintenance. Background technique

[0002] With the rapid development of highway construction in our country, the mileage of road maintenance continues to increase, resulting in a relative shortage of maintenance funds and a low level of maintenance. To change the current situation of passive maintenance, the most effective way is to implement preventive maintenance. As a preventive maintenance measure, thin-layer overlay has been proved to be a technology worthy of promotion by foreign practice, and has certain reliability.

[0003] Foreign engineering practice has proved that ultra-thin asphalt concrete overlay, as a preventive maintenance measure, can prolong the service life of highway pavement for at least 5 years compared with micro-surfacing. Comp...

Claims

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