Warm-mixed type water damage resisting asphalt pavement reinforcing agent and preparation method thereof

Abstract

The invention discloses a warm-mixed type water damage resisting asphalt pavement reinforcing agent which comprises the following components in percentage by mass: 30-60 percent of low molecular weight polyethylene, 30-60 percent of polyethylene oxide, 0-10 percent of an interface compatibilizer and 0-3 percent of an inorganic reinforcing agent. The interface compatibilizer is used for reducing interface energy between the asphalt pavement reinforcing agent and asphalt and aggregate so that the coating capability between an asphalt cementing material and the aggregate is greatly increased and the water damage resistance of an asphalt mixture is improved; when the temperature is reduced below a melting point of the asphalt pavement reinforcing agent, plastic components in the asphalt pavement reinforcing agent are separated out by crystallization; due to a nucleation effect of the inorganic reinforcing agent, the plastic components separated out by crystallization grow radially by taking the inorganic reinforcing agent as center; due to a compatibilization effect of the interface compatibilizer, the plastic components form a good adhered netlike structure with the asphalt and the aggregate, so that the high-temperature stability and high-temperature anti-track performance of the asphalt mixture are greatly improved.

Description

Technical field [0001] The invention relates to an additive for asphalt pavement, in particular to a warm-mix anti-water damage asphalt pavement intensifier and a specific preparation method thereof. Background technique [0002] Generally, the design service life of a newly built road is 10-15 years. However, as the problems of channelized traffic and heavy load and overload continue to aggravate, the actual service life of asphalt pavement is greatly reduced, especially in heavy traffic, long vertical In special road sections such as slopes, rutting, crowding, potholes, cracks, water damage and many other diseases have appeared on the asphalt pavement after 3 to 5 years of service, which seriously affects people's driving safety. [0003] At present, hot-mix asphalt mixture is still the mainstream technology in traffic construction. Since the mixing and compaction temperature of hot-mix asphalt mixture is usually as high as 150℃~190℃, it is easy to age asphalt and affect the road...

AI Technical Summary

Problems solved by technology

[0006] However, the research on multi-functional composite asphalt pavement additives is still in its infancy, and the specific use effects of each product are still in practice, especially the composite asphalt pavement additives with warm mixing effect and low cost are still very rare. In view of the above The defects of the existing composite asphalt pavement additives, the inventors are based on years of rich practical experience and professional knowledge engaged in the design and research of this type of product, and cooperate with the application of theories to actively research and innovate, aiming to propose a new type of warm mix Anti-water damage asphalt pavement reinforcement materials have important practical significance for energy saving and emission reduction, prolonging the service life of pavement, and ensuring the safety of personnel

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