Anti-cracking interlayer for asphalt pavement

Abstract

The invention relates to an anti-cracking interlayer for an asphalt pavement, and belongs to the field of composite materials. The anti-cracking interlayer is arranged between the surface layer and the base layer of the asphalt pavement, and comprises a stress absorbing film layer, a superpolymer layer, a high-strength tire base layer and a self-adhering superpolymer layer from the top down. The anti-cracking interlayer has the intelligent functions such as self checking, self controlling and self repairing, as well as vital signs, and has the advantage that stress in the base layer can be dispersed and absorbed automatically, so as to prevent and slow down the generation and the expansion of crack on the pavement, control pavement crack and associated diseases, and prolong the service life.

Description

technical field [0001] The invention relates to an asphalt pavement anti-cracking interlayer, which has intelligent functions and life characteristics such as self-detection, self-control and self-repair for pavement cracks, and belongs to the field of composite materials. Background technique [0002] Cracks and other diseases of semi-rigid base asphalt pavement are inevitable. The road engineering field has been in the process of testing and exploring the measures to prevent or slow down the reflective cracks of asphalt pavement. In recent years, the research on the crack resistance of asphalt pavement has generally focused on improving asphalt In terms of surface materials, there are three main research directions: (1) improving the gradation of mineral mixtures to improve the high-temperature deformation resistance of asphalt mixtures, forming different new technologies for asphalt mixtures; (2) improving the performance and quality of asphalt to Improve its ability to r...

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Problems solved by technology

[0011] (2) The effect of the use of geosynthetics is affected by factors such as the strength of the existing pavement structure, damage and repair, the thickness of the overlay asphalt layer, climate conditions, the type of geosynthetics, and the construction process, which will affect the performance of the asphalt pavement and induce Other types of pavement diseases (such as oil flooding, surface material peeling, passing, etc.), even lead to failure in use

[0012] (3) Geotextiles such as Trupave polyester fiberglass cloth, carbon fiber cloth, and reticulated polypropylene fiber are used as the middle layer of the stress-absorbing membrane. Because they are very thin and do not have the functions of strengthening the structure and improving drainage, they cannot be regarded as an ideal geotextile. sandwich material

[0013] (4) Use materials such as asbestos fiber and metal wire to improve the anti-reflection crack performance of asphalt pavement. It has been widely used in the United States, Canada, Germany, etc., but asbestos fiber pollutes the environment and metal wire is easily corroded

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