High-thermal conductivity small-grain diameter asphalt mixture

Abstract

The invention relates to a high-thermal conductivity small-grain diameter asphalt mixture which is prepared from the following raw materials in parts by mass: 100 parts of aggregate, 5.8-7.0 parts of SBS modified asphalt, 0.1-0.35 part of fiber stabilizing agent, 0.1-0.8 part of aluminum nitride and 4-12.5 parts of mineral powder. The high-thermal conductivity small-grain diameter asphalt mixture of the invention is paved on a conductive asphalt layer to a thickness of 20-25mm, which saves the amount of raw materials, reduces the engineering cost, ensures smooth paved road, reduces vibration and noise, can meet the requirement of a heavy traffic road surface layer and ensure that heat released by the conductive asphalt layer can be more rapidly conducted to the surface layer and the ice and the snow on the road can be melted as soon as possible, can improve efficiency and save electric energy, can not generate an electricity leakage phenomenon and can ensure the safety of vehicles and pedestrians. The invention has the advantages of high construction speed and early traffic running.

Description

technical field [0001] The invention relates to an asphalt pavement surface layer, in particular to an asphalt pavement with high thermal conductivity and small particle diameter. Background technique [0002] The freezing phenomenon of roads in northern my country is very serious in winter due to rain and snow, which will greatly affect traffic operation and make the already congested urban traffic worse. The main hazards of road icing are: the friction between the wheels and the road surface is greatly weakened, resulting in vehicle skidding or brake failure, which may easily cause traffic accidents; Falls and other unexpected traffic accidents. In order to reduce various hazards caused by road icing, manual mechanical cleaning and salt anti-icing methods are usually adopted, but the efficiency of manual cleaning is low, and mechanical deicing affects traffic operation; although salt anti-icing is effective, it will cause serious damage to the road surface. Corrosion aff...

AI Technical Summary

Problems solved by technology

The main hazards of road icing are: the friction between the wheels and the road surface is greatly weakened, resulting in vehicle skidding or brake failure, which may easily cause traffic accidents; Occurrence of falls and other unexpected traffic accidents

In order to reduce various hazards caused by road icing, manual mechanical cleaning and salt anti-icing methods are usually adopted, but the efficiency of manual cleaning is low, and mechanical deicing affects traffic operation; although salt anti-icing is effective, it will cause serious damage to the road surface. Corrosion, which affects the service life of the pavement

[0003] The Chinese invention patent with the application number 200610046377.6 discloses a road surface production method for electric heating and automatic snow removal. Asphalt concrete mixed with carbon fiber is directly replaced by ordinary concrete. This method cannot ensure that the road surface will not leak electricity when it is powered on. Serious consequences for pedestrians and vehicles

Others have thought of laying a common asphalt layer on top of the conductive asphalt layer. Although this method can overcome the shortcoming of leakage, on the one hand, the thickness of the ordinary asphalt surface layer is generally more than 40mm. With the increase of heavy traffic , the surface layer tends to be thicker; on the other hand, due to the poor thermal conductivity of ordinary asphalt pavement, using the above method to melt the snow on the surface layer through the conductive asphalt layer will result in low work efficiency and waste of electric energy

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