Paving structure of heavy-duty traffic road based on high stiffness modulus asphalt mixture

Abstract

The invention discloses a paving structure of a heavy-duty traffic road based on a high stiffness modulus asphalt mixture and belongs to the technical field of road paving. The paving structure consists of an anti-wear layer, an anti-rutting deformation layer, an anti-fatigue layer and a semi-rigid base layer which are paved on a roadbed from top to bottom, wherein the anti-wear layer, the anti-rutting deformation layer and the anti-fatigue layer are high stiffness modulus asphalt mixture functional layers. Compared with the prior art, the paving structure disclosed by the invention solves the problem that a pavement structure of a conventional semi-rigid base layer asphalt pavement is damaged under the effect of heavy duty, has the characteristics of fatigue cracking resistance, permanent rutting deformation resistance, water damage resistance and the like, is low in life cycle cost, can be widely applied to heavy-duty traffic roads and has a high popularization and application value.

Description

[0001] technical field [0002] The invention relates to a road surface pavement technology, in particular to a heavy-duty traffic road pavement structure based on high stiffness modulus asphalt mixture. Background technique [0003] In recent years, my country's highway construction has effectively promoted the development of society and economy, and at the same time, it has also caused tremendous changes in the transportation structure. With the sharp increase in highway traffic volume, the phenomenon of overloading and heavy loading has become serious, and the damage to the road surface structure has also intensified. Many asphalt pavements suffered from different types of damage shortly after they were opened to traffic, such as rutting, fractures, wrapping, and deep subsidence, which rapidly deteriorated their performance and seriously affected the service quality of the road. Therefore, higher requirements are put forward for the structure and materials of the pavement....

AI Technical Summary

Problems solved by technology

Although the above method can improve the stiffness modulus of the asphalt mixture to a certain extent, it still has the following deficiencies: 1. While improving the asphalt mixture, the low-temperature performance is relatively reduced, and the asphalt mixture is prone to low-temperature cracking, which leads to asphalt road surface disease

2. The design of gradation design and volume index for asphalt mixture is not considered, but simply adding additives and changing asphalt binder, resulting in a great decrease in the fatigue resistance of asphalt mixture

3. The combination design of the pavement structure is not considered. Different pavement materials and structural combinations are different, and the overall road performance of the asphalt pavement reflected is very different.

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