Quick-setting emulsified asphalt cold patch material and preparation method thereof

Abstract

The invention discloses a quick-setting emulsified asphalt cold patch material and a preparation method thereof. The quick-setting emulsified asphalt cold patch material is composed of quick-setting anionic emulsified asphalt, a coagulation-promoting film-forming agent and mineral aggregate according to a weight ratio of 1:(1.2-1.8):(12.5-16.6), the coagulation-promoting film-forming agent is composed of chloride powder and water in a weight ratio of (10-15):(85-90), and the quick-setting anionic emulsified asphalt is composed of, by weight, 55-60% of linear SBS modified asphalt, 1.2-1.5% of an anionic emulsifier, and the balance of water. The quick-setting anionic emulsified asphalt is adopted and can be used in a humid environment, the quick-setting anionic emulsified asphalt contains the linear SBS modified asphalt, and the mechanical properties and the bonding property of the quick-setting emulsified asphalt cold patch material can be well improved; and the preparation method is simple and convenient to operate, and the prepared quick-setting emulsified asphalt cold patch material can be used for quickly constructing and quickly forming strength and is high in environmental adaptability.

Description

technical field [0001] The invention relates to the technical field of road building materials, in particular to a quick-setting emulsified asphalt cold patch and a preparation method thereof. Background technique [0002] At present, as a way of repairing potholes at room temperature, cold patching materials are more and more used in emergency repairs. The traditional cold patching material has two major defects: one is that the strength is slowly formed, relying on the volatilization of the solvent, the asphalt gradually thickens and gradually forms the strength, this process generally takes 5 to 7 days, and usually in the process of forming strength The location of the repaired material is prone to damage again, which shortens the service life of the cold patching material; second, the pits and grooves on the asphalt pavement usually appear concentrated after raining. In order to repair quickly, it is impossible to wait for the road to dry before repairing. Insufficient ...

AI Technical Summary

Problems solved by technology

The traditional cold patching material has two major defects: one is that the strength is slowly formed, relying on the volatilization of the solvent, the asphalt gradually thickens, and gradually forms the strength. This process generally takes 5 to 7 days, and usually in the process of forming strength, cold patching The repairing position of the material is prone to damage again, which shortens the service life of the cold patching material; second, the pits and grooves on the asphalt pavement usually appear concentrated after raining. In order to repair quickly, it is impossible to wait for the road to dry before repairing. Insufficient adhesion of the base surface, easy to cause delamination and peeling off of the interface

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