Method for manufacturing composite anti-reverse structure suitable for heavy-duty traffic conditions

Abstract

The invention belongs to the technical field of prevention and control of road surface reflection crack, and discloses a compound reflection preventing structure applicable to heavy-load traffic condition. The compound reflection preventing structure is positioned between a cement concrete base layer and an asphalt surface layer, and comprises a high tensile material layer and sealing adhesive layers used for covering the whole high tensile material layer, wherein the high tensile material layer is a stainless steel mesh, and the sealing adhesive layers are shrinkable HZ / ZD-4 joint material layers. The compound reflection preventing structure is good in reinforcing effect, high in reflection prevention performance, controllable in quality, and remarkable in reflection prevention effect under the heavy-load traffic condition. The invention further discloses a production method and application of the compound reflection preventing structure.

Description

technical field [0001] The invention belongs to the technical field of prevention and treatment of reflective cracks on road surfaces. Background technique [0002] The composite pavement uses the cement concrete panel as the rigid base, and the asphalt mixture flexible surface layer is paved on it, which has the advantages of good durability, high bearing capacity, comfortable driving and low noise. However, due to the differences in the materials of cement concrete and asphalt mixture, the elastic modulus of cement concrete is usually 15 to 20 times that of asphalt mixture, resulting in different stress and strain characteristics of the two under the action of load stress and temperature stress. , Cracks are easy to occur under temperature and humidity changes or driving loads, and expand to the surface layer to make the surface layer crack. The cracks on this surface layer are called reflective cracks, which are one of the main road hazards of semi-rigid pavement and rigi...

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Problems solved by technology

[0004] The disadvantages of the above two methods are: ①The tensile strength of geotextiles and grids is usually only 25~50kN / m, which are easy to be broken under tension, and the effect of reinforcement is not obvious, and even partly The geotextile and geogrid have been pulled off, and the anti-crack performance in the later stage has declined significantly, and the expected anti-reverse effect cannot be achieved. Moreover, when the construction joints are large or the surface flatness of the cement concrete slab cannot meet the requirements, the geotextile and geogrid Weakly reinforced materials such as grids are easily punctured by sharp gravel during construction, and the anti-reverse performance is low

②The rubber asphalt-gravel isolation layer needs to be cast and used at the construction site. The cleanliness of the gravel and the amount of rubber asphalt spreading will have a great impact on the interlayer bonding performance and the anti-reflection performance of the road surface, and the quality is difficult to control

[0005] It is worth noting that in recent years, with the continuous increase of highway traffic volume and vehicle axle load, overloaded and overrun transportation has been repeatedly prohibited. The anti-reverse effect of the above two traditional anti-reverse methods is even worse, and it is difficult to meet the road use requirements

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