A self-sealing vacuum compaction device and method for asphalt pavement

Abstract

The invention discloses an asphalt pavement self-sealing vacuum compaction device and method. In the device, a rubber layer wraps rollers evenly along the circumference; a gas distribution plate is provided with a number of holes; a ventilation joint is provided with an exhaust port and an air intake port; Each hole has two outlets in the same section as the suction port and the exhaust port; the suction port is connected to the vacuum suction end of the vacuum equipment; the exhaust port is connected to the exhaust end of the vacuum equipment; the rubber layer Several rows of radial holes are uniformly opened along the axial direction, and each row of radial holes communicates with the corresponding axial holes inside the rubber layer; the axial holes communicate with the corresponding holes on the gas distribution plate. The inventive row of air holes on the rubber layer of the grounding section and the paved asphalt mixture form a sealed space, the sealed space is small, and it is easier to achieve the required vacuum degree. During the compaction process, there is no need for machine parts to slide relative to the road surface, which ensures the airtightness of the confined space, greatly prolongs the service life of the machine, and improves the compaction quality and efficiency.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of engineering machinery and relates to an asphalt pavement compaction device and method. [0003] 【Background technique】 [0004] Asphalt pavement is widely used due to its superior performance such as comfortable driving, low noise, easy mechanized construction, and convenient maintenance and repair. Compaction is an important part of asphalt pavement construction, and the performance of compaction methods and equipment directly affects the compaction efficiency and the quality of asphalt pavement. At present, the commonly used asphalt pavement compaction equipment at home and abroad is mainly static roller and vibratory roller. Static rollers mainly include tire rollers and smooth wheel rollers. When working, the gravity of the roller acts on the asphalt mixture to make the asphalt mixture plastically deformed and compacted. The vibratory roller uses the vibration effect of the excitation unit in the vibr...

AI Technical Summary

Problems solved by technology

These large number of air bubbles wrapped in asphalt form a considerable number of "gas springs" and form a "spring-mass system" with the supported aggregates. On the one hand, it consumes a lot of compaction energy; on the other hand, when the compaction force is removed, The "gas spring" will rebound, reducing the plastic deformation of each compaction and reducing the compaction efficiency

That is, the "gas spring" effect of a large volume of enclosed gas impedes the compaction process

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