Cold mixing color asphalt mixture and preparation method

Abstract

The invention discloses a cold mixing color asphalt mixture and a preparation method. The preparation method comprises the following steps: selecting aromatic hydrocarbon oil, rubber oil, petroleum resin, epoxy resin, a modifier, a plasticizer, a diluent, diatomite, a pigment and stabilizers, and mixing the materials according to the mass proportion, thus obtaining color asphalt cement; selecting an emulsifier, the stabilizers and a defoamer, and mixing the three materials with the color asphalt cement in proportion, thus obtaining emulsified color asphalt cement; and selecting an aggregate, a filler, cement, a waterborne curing agent, an expansive agent and the emulsified color asphalt cement, and mixing the materials in proportion, thus obtaining the cold mixing color asphalt mixture.

Description

technical field [0001] The invention relates to the technical field of pavement materials, in particular to a cold-mixed colored asphalt mixture for urban greenways, bus lanes and roads in tourist areas and a preparation method. Background technique [0002] With the rapid development of the national economy and the steady development of infrastructure such as roads and urban roads, people have put forward higher requirements for the color and coordination of urban road materials. Accustomed to the traditional monotonous Baise pavement (cement concrete pavement) and black pavement (asphalt concrete pavement), a new type of colored asphalt pavement has gradually become a development trend to improve people's monotonous vision. Colored asphalt pavement is widely used in urban streets, tourist attraction roads, urban greenways, and various turning, speed limit, and intersection areas due to its advantages of inducing traffic flow, beautifying the city, improving road environmen...

AI Technical Summary

Problems solved by technology

First, pigments and asphalt are used to prepare colored asphalt through colloid milling and then used to prepare colored asphalt mixture. The colored asphalt mixture prepared by this method has the disadvantages of high cost and poor durability

Second, the colored asphalt mixture prepared by using dyed aggregate instead of some ordinary aggregates, but the colored asphalt mixture prepared by this scheme has the disadvantage of single color

Third, the method of adding inorganic color pigments is used to prepare colored asphalt mixtures. The colored asphalt mixtures prepared by this method have the disadvantages of poor adhesion and poor durability.

[0004] Colored asphalt mixtures are often used in special areas such as urban greenways, intersections, and turning intersections. Such areas are often the most inconvenient areas for mechanical paving and rolling, which directly affects the construction quality of colored asphalt mixtures. There is a problem of insufficient compaction, which leads to the excessive porosity of the constructed colored pavement, and accelerates the destruction of the colored pavement under the action of rainwater and appropriate load

In addition, the colored asphalt technology with the best effect has disadvantages such as high price, poor adhesion between organic modifiers and inorganic pigments, and poor high-temperature performance, which also restricts the development of this technology, and cold-mix colored pavement based on colored asphalt even fewer research applications

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