Double-layer one-time paving bituminous pavement structure and construction technology

Abstract

The invention discloses a double-layer one-time paving bituminous pavement structure. The double-layer one-time paving bituminous pavement structure comprises an upper surface layer and a lower surface layer, the upper surface layer is located at the top of the lower surface layer, and the upper surface layer and the lower surface layer both are bituminous mixture layers. The invention further discloses a construction technology of the double-layer one-time paving bituminous pavement structure, the two bituminous mixture layers of the upper surface layer and the lower surface layer are paved at the same time, and the two bituminous mixture layers of the upper surface layer and the lower surface layer are pressed and formed at the same time. The double-layer one-time paving bituminous pavement structure and construction technology has the advantages of good interbedded adhesion, high paving efficiency and low paving cost; and the high temperature stability of double-layer bituminous pavement can be determined accurately, the cost in the experimental process is low, and the double-layer one-time paving bituminous pavement structure and construction technology is convenient and efficient.

Description

technical field [0001] The invention relates to the technical field of pavement paving, in particular to a double-layer one-time paving asphalt pavement structure and construction technology. Background technique [0002] The traditional double-layer asphalt pavement mainly adopts the upper layer 4cmAC-13 + the lower layer 6cmAC-20, and adopts the traditional construction technology of layered paving and layered rolling. The construction between the two structural layers is usually not continuous, which is "cold + hot". The construction technology, while the traditional construction technology has the following problems: [0003] 1. Affected by the cross-construction of roadbed, greening, communication and other projects, it is easy to cause pollution of the surface layer or the underlying layer, which will affect the bonding effect of each asphalt structure layer; [0004] 2. In engineering practice, the interlayer treatment measures of spreading sticky layer oil have been...

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Problems solved by technology

[0003] 1. Affected by the cross-construction of roadbed, greening, communication and other projects, it is easy to cause pollution of the surface layer or the underlying layer, which will affect the bonding effect of each asphalt structure layer;

[0004] 2. In engineering practice, the interlayer treatment measures of spreading sticky layer oil have been adopted, but it is difficult for each structural layer to form an interlocking connection between aggregates and a complete continuous contact state between layers, which affects the durability and design reliability of the pavement, and also increases The viscous layer oil process and project cost are reduced, and the construction period is longer, and the construction cost is also higher

[0005] 3. The surface layer of asphalt structure with thin thickness becomes the last process of asphalt pavement construction. It is usually constructed in autumn and winter. The ambient temperature is low, and the temperature of asphalt mixture is lost quickly. Difficult, will seriously affect the compaction effect and road leveling

[0006] In summary, the existing double-layer asphalt pavement has the defects of poor interlayer adhesion, long laying process period and high cost

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