Construction Technology of Welding Materials for Pavement Reflective Cracks

Abstract

The invention belongs to the technical field of road engineering, and particularly relates to a road reflection crack welding material and a construction process thereof. The road reflection crack welding material is prepared by the following components in weight percentage: 80-85% of aggregate, 10-15% of high polymer material and 3-5% of additive; and road reflection cracks are repaired by such processes as detecting, sorting, cleaning, punching, welding and testing. The road reflection crack welding material uses the high polymer material as adhesive so as to be effectively combined with an asphalt surface layer and a base layer to form a whole, so that the cracks can be repaired and a structural damage problem generated from the cracks can be solved; and the construction is carried out under normal temperature without heating, and not affected by the season, air temperature and environment, so that the cracks can be repaired from bottom to top. The road reflection crack welding material has low production cost, a simple proportioning and construction process and extensive construction conditions, and is firm and wearable, and can be combined with the road surface to form the whole.

Description

technical field [0001] The invention belongs to the technical field of road engineering, in particular to a construction process of a road surface reflection crack welding material with low production cost, simple proportioning and construction process, wide construction conditions, firmness and durability, and can be integrated with the road surface. Background technique [0002] Due to long-term use and the destruction of the natural environment, ordinary highways and expressways will have different degrees of disease after a period of use, such as invisible cracks in the pavement base, reflective cracks in the pavement, network cracks in the pavement, cracks, etc., among which the pavement Reflective cracks run through the asphalt surface and base of the pavement. Most of the bases of ordinary highways and expressways in my country are semi-rigid bases, and reflective cracks are dominant. Reflective cracks are cracks that develop from bottom to top, such as figure 1 show...

AI Technical Summary

Problems solved by technology

[0004] (1) At present, most of the treatment of reflective cracks on the pavement uses crack treatment materials such as joint glue or anti-crack stickers. However, this traditional crack treatment material can only solve the problem of water sealing, and cannot Basically heals the cracks, but cannot solve the structural damage caused by cracks, such as figure 2 shown

[0005] (2) The properties of traditional crack treatment materials such as joint glue and the asphalt concrete of the asphalt pavement and the cement stabilized gravel materials of the 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, and can only be maintained for a short time after treatment. Such a seam needs to be processed 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 for crack damage, the depth and layer of cracks are not clear, crack disease is not classified, and a unified joint 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

Images