Novel asphalt mixture for pavement construction

Abstract

The invention discloses a novel asphalt mixture for pavement construction. The novel asphalt mixture is prepared from the following raw materials in percentage by weight: 3 to 8 percent of rock asphalt modified asphalt, 4 to 6 percent of mineral, 82 to 90.7 percent of aggregate, 0.3 to 1 percent of a coupling agent and 2 to 3 percent of a filler, the rock asphalt modified asphalt is prepared fromrock asphalt, matrix asphalt, a stabilizer and nano vitrified micro bubbles, the percentage content of the rock asphalt in the rock asphalt modified asphalt is 3-5%, the percentage content of the matrix asphalt in the rock asphalt modified asphalt is 87.2-92.8%, the percentage content of the stabilizer in the rock asphalt modified asphalt is 0.2-0.8%, and the percentage content of the nano vitrified micro bubbles in the rock asphalt modified asphalt is 4-7%. The invention aims to solve the problem that matrix asphalt is modified by utilizing the characteristics of rock asphalt, according to the modified asphalt and the preparation method thereof, the excellent properties of the modified asphalt and the nano glass beads are brought into full play, particularly the properties of the modifiedasphalt are further optimized by adding the nano glass beads, so that the modified asphalt not only has good stability and rut deformation resistance, but also has heat insulation and pavement heat absorption reduction capabilities.

Description

technical field [0001] The invention belongs to the technical field of asphalt mixture for road construction, and in particular relates to a novel asphalt mixture used for road construction. Background technique [0002] Rock asphalt is a kind of natural asphalt. Because rock asphalt coexists with the natural environment all the year round, its properties are particularly stable, and it usually has very good road performance. Rock asphalt is not used directly as asphalt, but as an improvement of artificially refined asphalt. A small amount of additive is added to form modified asphalt, so that its excellent technical performance can be maximized. Rock asphalt, as natural asphalt, is a kind of hard asphalt with a long history. It is the best modifier to improve the compatibility and dispersion of petroleum asphalt. It is generally added to petroleum asphalt or asphalt mixture as a modified material for modification. , rock asphalt can be used as a low-cost modification techn...

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Problems solved by technology

A large amount of glass waste brings inconvenience to people's life, occupies land at the same time, pollutes the environment, and wastes resources

[0005] At present, due to the low aging resistance and low temperature cracking resistance of SBS modified asphalt, the safety of the road is low, and the production process of SBSs modified asphalt is complicated, the production cost is high, and the production requires more energy consumption. Larger emissions, more serious damage to the environment

[0006] At the same time, the urban heat island effect (Urban Heat Island Effect) in many domestic cities has become very prominent, and it has become one of the problems that must be solved in urban development. Urban roads are an important part of the underlying surface of the city, and glass has a good effect. Reflection and heat insulation, in the traditional glass asphalt mixture, the glass exists in the aggregate, which makes it easy to be crushed, and the road surface is prone to rutting and other diseases

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