Activated waste rubber powder mixture for noise reduction micro-surfacing

Abstract

The invention discloses an activated waste rubber powder mixture for noise reduction micro-surfacing. The raw materials of the activated waste rubber powder mixture comprise mineral material, modifiedemulsified asphalt, activated waste rubber powder, cement, octadecyltrimethylammonium chloride and composite additive, and the composite additive is a mixture of polyphenylsiloxane, N,N-dicyclohexyl-2-benzothiazolyl sulfenamide, chloroprene rubber, polypropylene glycol diacrylate, polytetrahydrofuran ether and a crosslinking agent. The compatibility and the bonding performance of the rubber powder and the mineral material with asphalt are improved to improve the noise reduction effect, the viscosity, the viscosity and the toughness of the asphalt are improved by an asphalt modifier to improvethe weather resistance, the water resistance and the flow resistance of the noise reduction micro-surfacing and enhance the noise reduction effect, and the octadecyltrimethylammonium chloride is usedto enhance the micro-surfacing strength formation speed in order to achieve the purpose of rapid opening to traffic; and the compatibility of all the components is improved through the composite additive, the mechanical energy is converted into movement energy of micro-molecular chain or segments, and the mechanical energy is converted into the form of thermal energy to dissipate, so the noise reduction effect is improved.

Description

Technical field [0001] The invention relates to the technical field of preventive maintenance of asphalt pavements, in particular to an activated waste rubber powder noise reduction micro-surface mixture. Background technique [0002] As an economical, fast, effective, environmentally friendly, fast open traffic, and long-life pavement preventive maintenance technology, the micro-surfacing technology has outstanding advantages in improving road anti-skid, sealing water, improving road appearance and smoothness, etc. It has become the mainstream technology for preventive maintenance of high-grade highways and urban roads in my country. However, the noise inside and outside the vehicle during the driving process when using the micro-surface, that is, tire-road noise, is significantly larger than that of the hot-mixed hot-paved asphalt pavement, which greatly affects the driving comfort of the road surface and restricts the promotion and application of the micro-surface technology. ...

AI Technical Summary

Problems solved by technology

[0004] The feature of the prior art is that the rubber powder is directly applied to the mixture by a wet method (rubber asphalt) or a dry method (replacing aggregate), without considering the compatibility and bonding performance of the rubber powder and asphalt. To a large extent, the activity and utilization rate of rubber powder are inhibited. Therefore, it is necessary to increase the activity of rubber powder to achieve a higher utilization rate and truly realize the recycling of waste resources.

And after adding rubber powder, it will cause the strength of the micro-surface to form slowly, and the traffic cannot be restored quickly

Moreover, the preventive maintenance methods for asphalt pavement noise reduction in the prior art are mainly to increase the porosity of the seal layer or reduce the depth of the surface structure by adjusting the material gradation. Engineering practice shows that these methods have no obvious noise reduction effect and cannot effectively reduce the asphalt Road surface preventive maintenance sealing vehicle driving noise

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