Pit slot reinforcing structure and method for old asphalt pavement

Abstract

The invention discloses a pit slot reinforcing structure and method for an old asphalt pavement. The structure comprises a T-shaped reinforcing body for repairing a pit slot at the position of the pitslot, wherein a waterproof layer is arranged between the T-shaped reinforcing body and the old asphalt pavement, and a compaction reinforcing layer is laid at the top of the T-shaped reinforcing body. The method comprises the following steps: 1, forming a groove; 2, acquiring a T-shaped pile hole; 3, paving the waterproof layer; 4, pouring a pouring body; and 5, paving the compaction reinforcinglayer. The design of the method is novel; slotting and forming are conducted on the pit slot, slack old materials are removed, and drilling is performed at slot bottom to obtain the T-shaped pile hole; after waste residues in and around the T-shaped pile hole are cleaned up, the T-shaped pile hole is subjected to waterproof treatment and pavement of the waterproof layer; then the pouring body is poured to form the T-shaped reinforcing body; the pit slot is reinforced by the compaction reinforcing layer; a vertical pile in the T-shaped reinforcing body extends into the old asphalt pavement, sothe connecting depth of the vertical pile and the old asphalt pavement is increased, and the whole T-shaped reinforcing body is fixedly supported; and pit slot reinforcing effect is good, service lifeis long, and construction is easy.

Description

technical field [0001] The invention belongs to the technical field of reinforcing old asphalt pavement potholes, and in particular relates to a reinforcing structure and method for old asphalt pavement potholes. Background technique [0002] Asphalt pavement refers to various types of pavement paved with asphalt materials mixed with mineral materials. Asphalt binder improves the ability of paving aggregates to resist damage to the road surface caused by traffic and natural factors, making the road surface flat, less dusty, and durable. Most existing roads use semi-rigid base asphalt pavement structures or cement pavement structures, which are exposed in practice. Some defects and deficiencies, including reflection cracks and water damage are difficult to solve, and the development stages of asphalt pavement cracks are single cracks, block cracks, network cracks, until pits appear. Once potholes appear on the pavement, the following steps are often used to repair them: Befo...

AI Technical Summary

Problems solved by technology

Asphalt binder improves the ability of paving aggregates to resist damage to the road surface caused by traffic and natural factors, making the road surface flat, less dusty, and durable. Most existing roads use semi-rigid base asphalt pavement structures or cement pavement structures, which are exposed in practice. Some defects and deficiencies, among which reflection cracks and water damage are difficult to solve, and the development stages of asphalt pavement cracks are single cracks, block cracks, network cracks, until pits appear

Once potholes appear on the pavement, the following steps are often used to repair them: Before repairing the local damage of the asphalt pavement, groove the broken part, then dig out the old materials that have been dug out, and remove the broken pieces in and around the pit Clean up the stones and waste residue, and spray a layer of viscous oil evenly on the wall and bottom of the pit to infiltrate the exposed stone on the inner surface of the pit, thereby improving the bonding effect between the asphalt mixture and the original pavement material, and then Pour the asphalt mixture into the pit to fill it up, and then compact it after paving evenly. This method is prone to cracks due to the low degree of bonding between the new and old road surfaces, and the service life is not high

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