Mixture for quickly repairing asphalt pavement and repairing method thereof

Abstract

The invention discloses a mixture for quickly repairing an asphalt pavement and a repairing method thereof. The mixture comprises a cold mixed asphalt composite material and a grouting material. The cold mixed asphalt composite material comprises bio-based cold-filled asphalt, scrap steel slag and mineral powder. The grouting material comprises Portland cement, quartz sand, a water reducing agent,an early strength agent and rubber powder. A preparation method of the mixture comprises: blending raw materials of the cold mixed asphalt composite material according to a mass ratio, blending raw materials of the grouting material and water to obtain grouting material slurry, cutting, digging and removing the damage parts of the asphalt pavement, spray-coating the asphalt pavement with a waterproof bonding material, paving the cold mixed asphalt mixture, carrying out rolling, pouring the grouting material slurry into the cold mixed asphalt mixture until overflow and carrying out curing. Through combination of the asphalt cold-filled material and the grouting composite material, the mixture has high strength, durability and corrosion resistance, can quickly repair the pavement, effectively shortens a construction period, reduces a cost and prolongs a service life of the pavement.

Description

technical field [0001] The invention belongs to the field of asphalt pavement repair, in particular to a mixture for quickly repairing asphalt pavement and a repair method thereof. Background technique [0002] Asphalt pavement repair is a daily project of road engineering maintenance. At present, the repair methods are mainly divided into two types: cold repair and hot repair. Among them, cold patching mainly uses special asphalt cold patching material to repair the pits and grooves of asphalt pavement. This kind of material has the advantages of easy operation, fast opening time, etc. Its performance is low, especially in terms of high temperature performance and water damage resistance, and its life cycle is 1-2 months, so asphalt cold patching is often used as an emergency material; hot patching is mainly from mixing The building-mixed hot asphalt mixture is re-paved into the potholes of the asphalt pavement for repair. This repair method has better performance, but th...

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Problems solved by technology

Among them, cold patching mainly uses special asphalt cold patching material to repair the pits and grooves of asphalt pavement. This kind of material has the advantages of easy operation, fast opening time, etc. Its performance is low, especially in terms of high temperature performance and water damage resistance, and its life cycle is 1-2 months, so asphalt cold patching is often used as an emergency material; hot patching is mainly from mixing The building-mixed hot asphalt mixture is re-paved into the potholes of the asphalt pavement for repair. This repair method has better performance, but this method is not suitable for small-area and emergency repairs, and because of the deep repair depth, Insufficient compaction, the performance cannot be consistent with that of ordinary pavement, so the life cycle is usually about 1-2 years

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