A kind of blue asphalt mixture and preparation method thereof

Abstract

The invention discloses a blue asphalt mixture, which is prepared from the following raw materials in weight percentage: 80.5%-93.8% of mineral aggregate, 0%-5% of ground stone powder, and 3.5%-6.5% of highly transparent binder , Blue powder 1.5-4.5%, titanium dioxide 0.5%-1.5%, viscosity reducer 0.2%-0.5%, bright color agent 0.5-1.5%. The invention also discloses a preparation method of blue asphalt mixture, which comprises: 0% to 5% of ground stone powder, 3.5% to 6.5% of highly transparent binder, 1.5 to 4.5% of blue powder, 0.5% ~1.5% of titanium dioxide and 0.2%~0.5% of viscosity reducer are put into 80.5%~93.8% of mineral aggregates at 170℃~180℃, and mixed for 0.5‑3min to disperse evenly; 0.5~1.5% Brightener, continue mixing for 10‑30 seconds until a blue asphalt mixture is obtained. The invention can overcome the problem of discoloration of the blue asphalt mixture under high temperature.

Description

technical field [0001] The invention relates to the technical field of landscape roads, in particular to a blue asphalt mixture and a preparation method thereof. Background technique [0002] In recent years, with the development of the economy and the continuous improvement of the level of science and technology, people have a deeper understanding of the coordination between the road and the environment and the safety performance of the road, and have higher requirements for the comfort and safety of the road. . As a new pavement method, colored asphalt pavement has gradually attracted widespread attention. The colorful pavement is rich in color, breaking the traditional black and white monotonous pavement color, and has the functions of indicating, adjusting the heat island effect, beautifying the urban environment, showing the urban style, and making the urban construction more humanized. [0003] At present, the color pavement is mainly red, because the red color can m...

AI Technical Summary

Problems solved by technology

For example, blue can be applied to roads along coasts and rivers, echoing with rivers and seas, but it is rarely used on roads at present. One is that blue powder is the most expensive, and the other is that the color is the most difficult to control, especially for hot mix asphalt mixture. When the temperature is too high, the transparency of the asphalt binder will affect the original color of the blue color, and the temperature of the mixture will have a great impact on the color stability. If the temperature is too high, the blue color will change obviously, which will affect the use.

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