Preparation method of anti-stripping rubber asphalt mixture

A technology for rubberized asphalt and mixture, which is applied in the field of preparation of anti-stripping rubberized asphalt mixture, can solve problems such as poor adhesion between acid aggregate and asphalt, and achieve the advantages of improving water damage resistance, reducing engineering cost and improving service life. Effect
CN110272229BActive Publication Date: 2021-12-21HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HENAN PROVINCIAL COMM PLANNING & DESIGN INST CO LTD
Publication Date
2021-12-21

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Abstract

The invention discloses a preparation method of an anti-stripping rubber asphalt mixture. Firstly, base asphalt, a softener and an activator are put into a reaction tank together with gradient heating and stirring to obtain rubber asphalt; the mixture is prepared with deionized water and absolute ethanol into an ethanol solution, then add a coupling agent and a silicone waterproofing agent, and stir evenly at room temperature to make an organic surface modifier; mix cement and hydrated lime powder in a mixer in proportion to prepare an inorganic modifier; grading Under the continuous stirring of the aggregate in the forced mixer, the organic surface modifier is sprayed on the surface of the graded aggregate, and after drying, it is blended with the inorganic modifier to obtain a comprehensive modified aggregate; rubber asphalt and comprehensive The anti-stripping rubber asphalt mixture is obtained after the modified aggregate is prepared according to the basic ratio of the asphalt mixture. The invention adopts surface modification technical means to change the surface property of the mineral material in the asphalt mixture, improves the adhesion between the asphalt and the mineral material, and prolongs the service life of the road surface.
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Description

technical field

[0001] The invention relates to the field of road engineering materials, in particular to a preparation method of an anti-stripping rubber asphalt mixture. Background technique

[0002] Asphalt roads have the characteristics of smooth surface, comfortable driving, and short construction period, and are widely used in road construction. However, many pavements often suffer serious damage during service, and early damage such as spalling, rutting, cracking, and potholes occurs. Especially among the various forms of early damage, water damage has a greater impact on pavement performance. Many studies have shown that the root cause of water damage to the pavement is that the adhesion of asphalt on the surface of the aggregate is weak. Potholes and other diseases.

[0003] For asphalt pavement, the adhesion and anti-stripping performance of asphalt and aggregate is one of the most basic conditions to ensure the performance of the pavement. Therefore, when build...

Claims

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