Light-colored asphalt cement and preparation method thereof

Abstract

The invention discloses light-colored asphalt cement and belongs to the technical field of road building materials. The light-colored asphalt cement includes, by mass, 20%-60% of naphthenic oil or furfural extract oil, 5%-20% of terpene resin, 10%-45% of petroleum resin, 1% of dispersing agents, 2% of antiaging agents, 3%-7% of thermoplastic elastomer and 4%-8% of EVA. The light-colored asphalt cement is likely to be colored, the dosage of pigments is low, high-temperature stability is good, ageing resistance is high, and the shortcomings that existing light-colored asphalt cement has high needle penetration, a low softening point and poor durability are overcome. The invention further provides a preparation method of the light-colored asphalt cement. The preparation method of the light-colored asphalt cement and subsequent production processes are easy to implement, production and construction are simple, the application range is wide, and the light-colored asphalt cement and the preparation method are particularly applicable to special occasions such as urban roads, motorways, landscape roads, squares, stadiums, parking lots and the like.

Description

technical field [0001] The invention belongs to the technical field of road building materials, and in particular relates to a light-colored asphalt binder and a preparation method thereof. Background technique [0002] Initially, the production of decolorized asphalt was just to directly decolorize asphalt according to the traditional method, and then gradually developed into a production method of using modern industrial petrochemical products (resins, polymers, etc.) to prepare polymer light-colored binders with properties equivalent to asphalt. The produced light-colored asphalt binder is mixed with inorganic pigments, ordinary aggregates or colored aggregates, and various colored asphalt pavements are obtained after paving and rolling. As a new type of paving material, light-colored asphalt binder is mainly used for the paving of colored asphalt pavement. Because it can be matched with different colors of pigments, it has good ductility, relatively stable color, not eas...

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Problems solved by technology

[0003] At present, there are many journals or patent documents that have published a series of studies on light-colored asphalt binders. However, many of them are only on paper. Many modern petrochemical products are used to prepare light brown polymer cements that are comparable to ordinary black asphalt binders. All materials have many common characteristics, such as: poor high temperature stability, insufficient low temperature crack resistance, only suitable for the paving of non-motor vehicle lanes such as landscape roads, etc.

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