Construction Technology of Welding Materials for Cracks in Pavement Asphalt Surface

Abstract

The invention belongs to the technical field of road engineering, and particularly relates to a pavement asphalt surface layer crack welding material and a construction technology thereof. The welding material is prepared from the following components in percentage by weight: 80-85% of aggregate, 10-15% of high polymer material and 3-5% of additive; and the pavement asphalt surface layer crack is repaired by the processes of probing, sorting, cleaning, welding and detection. In the invention, the high polymer material is used as an adhesive which can be effectively combined with the asphalt surface layer into a whole so as to fundamentally repair the crack; the problem of structural damage caused by the crack is solved, construction can be carried out at normal temperature without requiring heating, and the construction is not influenced by the season, temperature and environment; and the welding material provided by the invention has the advantages of low production cost, simple proportioning and construction technology and wide construction conditions, is firm and durable and can be combined with the crack into a whole.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to a construction process of a pavement asphalt surface layer crack welding material with low production cost, simple proportioning and construction process, wide construction conditions, firmness and durability, and the ability to be integrated with cracks. Background technique [0002] Due to long-term use and damage to the natural environment, ordinary roads and expressways will suffer from varying degrees of damage after a period of use, such as cracks in the asphalt layer of the road surface. If they are not repaired in time, the base layer of the road surface will be destroyed. more difficult. [0003] Conventional asphalt surface crack treatment techniques, processes and materials have the following problems: [0004] (1) At present, most of the cracks in the asphalt pavement are treated with crack treatment materials such as joint glue or anti-crack st...

AI Technical Summary

Problems solved by technology

[0004] (1) At present, most of the cracks in the asphalt pavement are treated with crack treatment materials such as joint glue or anti-crack stickers. However, these crack treatment materials can only solve the problem of sealing water and cannot fundamentally cure them. Cracks cannot solve the problem of structural damage caused by cracks;

[0005] (2) These crack treatment materials are quite different from the asphalt concrete materials of the asphalt pavement, and cannot be effectively combined with the asphalt surface to form a whole. In this way, the thermal expansion and contraction of the crack treatment materials and the asphalt surface of the pavement are inconsistent, and the treated cracks are easy to reappear. Cracking can only be maintained for a short time after treatment. Such a seam needs to be treated repeatedly, which will consume a lot of manpower and material strength;

[0006] (3) The production process of the existing crack treatment materials is relatively complicated, and the construction conditions are strict, and the construction is often affected by the season, temperature and environment. In harsh environments, such as rain, snow, and strong winds, construction cannot be carried out. , resulting in low construction efficiency;

[0007] (4) Conventional joint filling construction does not carry out non-destructive testing of crack diseases, the width, depth and layer of cracks are not clear, crack diseases are not classified, and uniform filling process is adopted, 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

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