Crack seamless cold-welding construction technology for semi-rigid base asphalt pavement

Abstract

The invention belongs to the technical field of road engineering, and in particular relates to a crack seamless cold-welding construction technology for a semi-rigid base asphalt pavement. A macromolecule material or non-stirred and macromolecule concrete is used as a welding material; and the technology comprises a series of working procedures of detecting, preparing and selecting the welding material, sweeping the welding material, calibrating a working range, spraying cold-welding liquid, raking, stirring, grinding, perforating, welding and detecting. According to the technology, the macromolecule material and an asphalt surface layer are effectively combined to form a whole, so that the problem of structural destroy caused by cracks is solved; a welded crack is stable in structure and long in service life; repeated treatment is not needed, so that labor and resources are saved, and the later-stage maintenance cost is reduced; moreover, the cracks are welded fundamentally; heating is not required in a construction process, so that energy consumption is reduced, harmful gas is prevented, and environment pollution is avoided; and after construction, the asphalt layer has no seams, so that the appearance and the flatness of a road cannot be influenced, and the traveling comfortableness is improved.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a non-marking cold welding construction process for semi-rigid base asphalt pavement cracks. Background technique [0002] Most of the ordinary road and expressway bases in my country are semi-rigid bases, because semi-rigid bases [0003] The particularity of semi-rigid base asphalt pavement cracks cannot be avoided. Due to the long-term use and the destruction of the natural environment, cracks will appear in different degrees on ordinary roads and expressways after a period of use. [0004] Conventional crack treatment techniques have the following problems: [0005] (1) At present, most of the treatment of pavement cracks is to use crack treatment materials such as joint glue or anti-crack stickers, but this traditional crack treatment material can only solve the problem of sealing water, but cannot fundamentally Cracks can be healed on the surface, bu...

AI Technical Summary

Problems solved by technology

[0005] (1) At present, most of the treatment of pavement cracks is to use crack treatment materials such as joint glue or anti-crack stickers, but this traditional crack treatment material can only solve the problem of sealing water, but cannot fundamentally Cracks can be healed on the surface, but the structural damage caused by cracks cannot be solved. In addition, crack treatment technologies such as joint glue or anti-crack paste and high polymer crack treatment technology will leave traces on the asphalt surface after construction, which not only affects the appearance, And it also affects the flatness, which is not conducive to the comfort of driving

[0006] (2) The properties of traditional crack treatment materials such as joint glue and asphalt concrete of asphalt pavement and cement-stabilized gravel materials of semi-rigid base are quite different, and they cannot be effectively combined to form a whole. The expansion and contraction are inconsistent, and the treated cracks are easy to crack again. After treatment, they can only last for a short time. Such a seam needs to be processed repeatedly, which will consume a lot of manpower and material strength.

[0007] (3) Conventional joint filling construction does not carry out non-destructive testing for crack damage, and the depth and layer of cracks are not clear, and the construction effect is poor

After the joint filling construction is completed, only the surface of the joint filling is inspected, and the depth and compactness of the joint filling material are not detected, so the construction quality inspection is not comprehensive

[0008] (4) Conventional joint filling construction often needs to be heated, which not only consumes a lot of energy, but also the existing repair materials or repair agents will emit harmful gases when heated, which is more harmful to the environment and poses a threat to the construction personnel. the body can do a lot of damage

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