How to solve the problem of uneven penetration layer of asphalt spreading truck?
Asphalt spreading truck is a kind of black ground construction machinery. It is an important equipment in the logistics construction of roads, municipal roads, airports and ports. This equipment is mainly used to spray different types of asphalt on the ground to meet the construction requirements of different levels of ground oil permeable layer, sticky layer, left and right permeable layer, fog permeable layer, etc.
Asphalt spreading truck is a kind of black ground construction machinery. It is an important equipment in the logistics construction of roads, municipal roads, airports and ports. This equipment is mainly used to spray different types of asphalt on the ground to meet the construction requirements of different levels of ground oil permeable layer, sticky layer, left and right permeable layer, fog permeable layer, etc.
However, the effect of the penetration layer of some asphalt spreading trucks currently on the market is not satisfactory, and there will be uneven horizontal penetration. The typical horizontal unevenness is the horizontal pattern of the penetration layer. At this time, certain measures can be taken to effectively improve the lateral uniformity of the asphalt layer.
1. Improve the nozzle structure
This has the following purposes:
First, in order to better integrate into the structure of the sprinkler pipe, the asphalt flow distribution of each nozzle is close to the same;
The second is to make the shape and size of the spraying surface of the single nozzle comply with the design requirements, achieve optimization, and ensure that the asphalt flow rate in the area is distributed to meet the design requirements;
The third is to better adapt to the construction requirements of different types of asphalt and different spreading amounts.
2. Moderately increase the penetration speed
As long as the speed of the asphalt spreading truck changes within the effective range, there will be no impact on the vertical uniformity of the asphalt permeable layer. Because when the speed is faster, the amount of asphalt splashed per unit time is large, but the amount of asphalt spread on the total area of ??the enterprise remains unchanged. Changes in speed have a great impact on the lateral uniformity.
3. Improve the characteristics of asphalt
If the bitumen viscosity is high, the fluid friction resistance of the bitumen will be large, the spurting molding will be small, and the number of overlaps will be reduced. In order to get rid of this problem, the general approach is to increase the diameter of the nozzle, but this will inevitably reduce the water jet speed, weaken the “impact-splash-evening” effect, and make the penetration layer uneven. In order to better improve the technical characteristics of asphalt construction, the characteristics of asphalt should be improved.