Double-layer rubber asphalt concrete structure for inhibiting reflection cracks of pavement and pavement method

A technology of concrete structure and rubber asphalt, which is applied in the direction of roads, roads, on-site paved cohesive pavements, etc., can solve the problems such as the effect is not outstanding, and achieve the effect of suppressing reflection cracks and dissipating concentrated stress
CN102733284AActive Publication Date: 2012-10-17SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI PUDONG ROAD & BRIDGE GRP CO LTD
Publication Date
2012-10-17

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Abstract

The invention discloses a double-layer rubber asphalt concrete structure for inhibiting reflection cracks of a pavement, from the bottom up comprising a treated old cement concrete pavement, an anti-cracking tack coat, a lower surface adopting a special modified asphalt mixture, and an upper surface adopting a rubber asphalt mixture. The invention simultaneously discloses a pavement method of the double-layer rubber asphalt concrete structure, comprising the following steps: (a) firstly pasting an anti-cracking belt on the junction of adjacent cement boards, and then spraying modified emulsified asphalt tack coat oil with the thickness of 0.8-1.0 mm to form the anti-cracking tack coat; (b) then paving the special modified asphalt mixture with the paving thickness of 4-8 cm to form the lower surface; and (c) finally paving the rubber asphalt mixture to form the upper surface. According to the invention, the generation and extension of the reflection cracks can be effectively inhibited, and the service life and service condition of the pavement structure can be improved.
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Description

technical field

[0001] The invention belongs to the technical field of road engineering, and in particular relates to a double-layer rubber asphalt concrete structure and a paving method for suppressing reflective cracks (cracks that are easily generated after asphalt surface layers are directly paved on a cement road surface). Background technique

[0002] At present, there are two main methods for transforming cement pavement into asphalt pavement: one is crushing, breaking the cement concrete pavement into tightly bonded concrete blocks with a surface of less than 8 cm and a bottom of less than 40 cm, and internally embedded concrete blocks. The asphalt concrete layer is added, and the rubble technology does not have the problem of reflection cracks. However, the disadvantage of this method is that there are more stone crushing processes, which increase the cost, and the noise caused by the stone crushing process seriously affects the surrounding environment, and the unde...

Claims

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