Asphalt mixture transportation method for expressway

Abstract

The invention discloses an asphalt mixture transportation method for an expressway. The asphalt mixture transportation method comprises the steps that the number of material transportation vehicles iscalculated, an advance route is determined, the material transportation vehicles are preheated, lubricant is sprayed, vehicles are loaded, heat preservation is conducted, transportation is conducted,and cleaning is conducted, the number of the material transportation vehicles is determined according to production capacity, transport time, consumption and the like of a mixing plant, safety reserve vehicles are increased, and occurrence of material stopping of paving is avoided. Material transportation vehicle pre-heating, lubricant spraying, heat preservation and other measures can minimize probability of segregation of an asphalt mixture, and the effects of improving the quality of asphalt pavement, prolonging the service life of the pavement, and lowering the cost of later maintenance are realized.

Description

Technical field [0001] The invention relates to the technical field of asphalt mixture transportation in highway construction, in particular to a transportation method of asphalt mixture for expressways. Background technique [0002] Highways have been built in China since the 1980s. At that time, the structure of the asphalt surface was type I asphalt concrete, with a porosity of 3% to 6%, low water permeability, good durability, and a friction coefficient that could meet the requirements. However, its structural depth is small, and it does not meet the requirements. [0003] The modern type II asphalt concrete has a void ratio of 6% to 10%, a deep surface structure and strong resistance to deformation, but its water permeability and durability are poor. Therefore, the asphalt concrete surface is still being studied. [0004] And with such a ratio, the practice of many highways has proved that the gravel asphalt concrete surface can not only provide a deeper surface structure, but ...

AI Technical Summary

Problems solved by technology

[0005] After years of development and continuous deepening of asphalt research, the materials and quality of domestic asphalt pavement construction have made great progress, but compared with developed countries, there is still a gap

The mixing, transportation, paving and rolling equipment used in asphalt pavement construction are internationally accepted, and the quality of asphalt has basically reached the level of developed countries. The main gap lies in the construction technology, especially the aggregate processing technology, processing equipment and The gap in quality control leads to serious segregation of asphalt pavement, many diseases, high maintenance costs and short service life

[0006] During the construction process, the distance between the mixing plant and the paving site is relatively long, and it is necessary to use a truck to transport the asphalt mixture to the paving site. There are many factors affecting the transportation process (including weather, road conditions, temperature, driving speed, etc.) and transportation time, etc.), the asphalt mixture will be segregated, and the quality of the segregated asphalt mixture will decrease, which will lead to a decrease in the quality of the asphalt pavement.

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