Novel cold-mixed and cold-laid wearing layer emulsified asphalt mixture and application method thereof

Abstract

The invention discloses a novel cold-mixed and cold-laid wearing layer emulsified asphalt mixture and an application method thereof, and the novel cold-mixed and cold-laid wearing layer emulsified asphalt mixture comprises the following components in parts by mass: 500-800 parts of coarse aggregate, 200-500 parts of fine aggregate, 70-160 parts of rosin resin composite modified emulsified asphalt, 0.1-10 parts of cement, 0.1-12 parts of external seepage water and 0.1-2 parts of an external seepage water modifier, the rosin resin composite modified emulsified asphalt is prepared by mixing a linear or star-shaped SBS modifier, 210 rosin modified phenolic resin and emulsified asphalt. According to the invention, rosin resin composite modified emulsified asphalt is introduced, and aggregate gradation and the construction process are improved, so that the obtained novel cold-mixed and cold-laid wearing layer emulsified asphalt mixture can achieve pavement performance of the hot-mixed ultrathin wearing layer after being laid, the problem of poor pavement performance of the traditional cold-mixed process is solved, and the mixture has the advantages of convenience and excellent performance at the same time.

Description

technical field [0001] The invention relates to the technical field of road paving materials and their processing and preparation, and relates to a novel emulsified asphalt mixture for cold-mixing and cold-paving wearing layers and an application method thereof. Background technique [0002] Hot-mix ultra-thin wearing layer technology is a pavement solution for heavy traffic load and high road performance requirements. It can not only be applied to the maintenance of high-grade asphalt pavement or cement pavement, but also can be used as a new road surface wearing layer. The construction process is to pave the 15-25mm thick discontinuously graded modified hot mix asphalt mixture on a layer of polymer modified emulsified asphalt adhesive film, and then use special spray-type paving synchronous equipment for construction. [0003] The construction process of the hot-mix ultra-thin wear course is simple, the paving speed is fast, and the traffic closure time is short, which mak...

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Problems solved by technology

[0005] The object of the present invention is to provide a new type of cold-mixed and cold-paved abrasive layer emulsified asphalt mixture and its application method, which is used to solve the two aspects of the convenience of the cold-mixed cold-paved process and the excellent performance of the hot-mixed process that are difficult to achieve in the existing methods The problem of having both advantages

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