Asphalt mixture anti-stripping agent and preparation method and application thereof

Abstract

The invention relates to the technical field of modified asphalt, in particular to an asphalt mixture anti-stripping agent and a preparation method and application thereof. The asphalt mixture anti-stripping agent comprises the following components in parts by weight: 50-70 parts of slaked lime, 15-35 parts of petroleum resin, 2-8 parts of an amine anti-stripping component and 5-15 parts of a dispersing agent. According to the asphalt mixture anti-stripping agent, all the components cooperate with one another so that the asphalt mixture anti-stripping agent can be timely and effectively adhered to the surface of aggregate in the mixing and stirring process of the asphalt mixture anti-stripping agent and high-temperature aggregate, and the adhesion between acidic aggregate and asphalt is enhanced. The asphalt mixture is prepared by adopting a direct feeding process, the step of mixing and stirring with asphalt is omitted, the requirement on equipment is low, the use is simple and convenient, and the separation between the asphalt and the anti-stripping agent can be reduced and the adhesion is enhanced.

Description

technical field [0001] The invention relates to the technical field of modified asphalt, in particular to an anti-stripping agent for asphalt mixture and its preparation method and application. Background technique [0002] As a pavement form with excellent performance, asphalt pavement is widely used in various grades of highways. Considering the safety of asphalt pavement, the pavement needs certain skid resistance, wear resistance, and bearing capacity, so the requirements for surface aggregates very strict. With the development of infrastructure and the strengthening of environmental protection awareness and strength in recent years, the demand for high-quality road construction stones has increased rapidly, but the supply of high-quality stones has decreased significantly, and some projects have faced the embarrassing situation of no suitable stones. Making the development and use of acidic stone has become an important development direction. Alkaline stone materials ...

AI Technical Summary

Problems solved by technology

However, it can be concluded from the results of large-scale use that simply using slaked lime or cement to improve the effect is not as good as organic anti-stripping agents, which are prone to segregation, and the use of anti-stripping materials is large, which may affect other properties of asphalt mixtures; while organic Although anti-stripping agent products have good effects, there are many restrictions on their use, for example: they need to be mixed with asphalt in advance, and appropriate mixing equipment is required; adding them in advance to hot asphalt is easy to thermally decompose, and the use stability is insufficient; it is necessary to prevent anti-stripping agents. Segregation of stripping agents and asphalt; higher price of organic anti-stripping agents

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