Asphalt pavement structure capable of preventing crack propagation and construction method

Abstract

The invention relates to an asphalt pavement structure for preventing crack propagation and a construction method. The asphalt pavement structure comprises a base layer, an old surface layer arranged on the base layer and a new surface layer arranged on the old surface layer, an I-shaped groove from the gap on the old surface layer to the base layer is formed, and a gap stopping structure in the I-shaped groove is arranged. the old surface layer is provided with a connecting hole used for being connected with a seam stopping structure; a connecting rod is arranged in the connecting hole; an anti-upheaval device is arranged between the old surface layer and the new surface layer. According to the invention, the seam stopping structure is arranged at the slot, so that the problem of upward reflection through the crack is effectively solved; an anti-upheaval device is arranged to effectively relieve the generation of upheaval diseases of a new surface layer; the base layer, the seam stopping structure and the old surface layer are connected into a whole through the arranged connecting rods, the integrity and strength of the pavement structure are enhanced, and it is guaranteed that the pavement structure is not prone to damage.

Description

technical field [0001] The invention belongs to the technical field of road engineering, and in particular relates to an asphalt pavement structure and a construction method for preventing crack expansion. Background technique [0002] Common road structures include cement concrete pavement and asphalt concrete pavement. Compared with cement concrete pavement, asphalt concrete pavement has the advantages of better driving comfort and lower noise. In order to reduce noise and improve driving comfort, the transformation of cement concrete pavement into asphalt concrete pavement has become one of the key tasks of road engineering construction at this stage. The method of paving the asphalt concrete surface layer on the original cement concrete pavement can effectively utilize the original cement concrete pavement and shorten the construction period. However, there are many gaps in the general cement concrete pavement surface, such as: transverse joints to prevent drying shrink...

AI Technical Summary

Problems solved by technology

However, under the action of moisture erosion and vehicle load, the pouring material is easy to fall off from the concrete panel, thus losing the effect of repairing and caulking

Whether it is paving isolation or perfusion sealing, it is only a temporary solution, not a permanent cure, and it is easy to lose its effect after a period of time

[0005] 3. The asphalt concrete surface is paved on the cement concrete pavement, and the bonding and compounding effect of the two is poor, and it is prone to diseases such as wrapping under the action of vehicle loads

At present, the measures to enhance the composite effect are mainly to spread sticky oil and roughening treatment on the cement concrete pavement, but the effect of spreading sticky oil and roughening treatment on the bonding effect is not obvious

[0006] 4. At present, the treatment of asphalt concrete surface layer is mostly concentrated on the concrete surface layer, and after long-term use of cement concrete pavement, especially under various gaps, due to rain erosion, uneven foundation settlement or insufficient compaction Problems such as road voids caused by uniformity have become particularly significant

However, voiding can easily lead to fracture of the surface layer structure, which affects the durability of the pavement structure.

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